Organic light emitting device and electronic device including the same

Abstract

The present application relates to an organic light emitting device comprising: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and comprising an emission layer, wherein the emission layer comprises a host and a dopant, the host comprises a first host compound, a second host compound, and a third host compound, and the first host compound satisfies condition 1-1 and condition 1-2: condition 1-1 S1(H1) > 3 eV condition 1-2 T1(H1) > 2.8 eV, wherein, in condition 1-1 and condition 1-2, S1(H1) represents a lowest excited singlet state energy level of the first host compound, and T1(H1) represents a lowest excited triplet state energy level of the first host compound.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0059969, filed with the Korean Intellectual Property Office on May 19, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] One or more aspects of the embodiments of this disclosure relate to organic light-emitting devices and electronic devices including said organic light-emitting devices. Background Technology

[0004] Organic light-emitting devices (OLEDs) are self-emitting devices that offer superior characteristics compared to devices in related fields, including wide viewing angles, high contrast, short response times, superior brightness, driving voltage, and / or response speed, and produce full-color images.

[0005] An OLED may include a first electrode located on a substrate, and a hole transport region, an emitter layer, an electron transport region, and a second electrode sequentially stacked on the first electrode. Holes supplied by the first electrode can move towards the emitter layer through the hole transport region, and electrons supplied by the second electrode can move towards the emitter layer through the electron transport region. Charge carriers such as holes and electrons can then recombine in the emitter layer to generate excitons. These excitons transition from an excited state to a ground state, thereby generating light. Summary of the Invention

[0006] One or more aspects of the embodiments of this disclosure relate to organic light-emitting devices having low driving voltage, high efficiency and long lifespan, and electronic devices including said organic light-emitting devices.

[0007] Other aspects will be set forth in part in the description which follows and will be apparent in part from the description, or may be learned by practice of the embodiments presented in this disclosure.

[0008] The embodiments of this disclosure provide an organic light-emitting device, including:

[0009] First electrode;

[0010] The second electrode facing the first electrode; and

[0011] An organic layer located between the first electrode and the second electrode, including an emission layer.

[0012] The emitter layer comprises a host and a dopant.

[0013] The main body includes a first main compound, a second main compound, and a third main compound, and

[0014] The first main compound satisfies conditions 1-1 and 1-2:

[0015] Condition 1-1

[0016] S1(H1)>3eV

[0017] Conditions 1-2

[0018] T1(H1)>2.8eV,

[0019] Among them, in conditions 1-1 and 1-2,

[0020] S1(H1) represents the lowest excited singlet state energy level of the first host compound, and

[0021] T1(H1) represents the lowest excited triplet energy level of the first host compound. Attached Figure Description

[0022] The above and other aspects, features and advantages of certain embodiments of this disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic view of the organic light-emitting device according to the implementation plan;

[0024] Figure 2 It is a schematic view of the light-emitting device according to the implementation scheme; and

[0025] Figure 3 This is a schematic view of a light-emitting device according to another embodiment. Detailed Implementation

[0026] Reference will now be made in more detail to the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same reference numerals refer to the same elements throughout. In this respect, the embodiments may take different forms and should not be construed as limited to the description set forth herein. Therefore, the following description, with reference to the accompanying drawings, describes only the embodiments to explain aspects of the present description. As used herein, the term “and / or” includes any combination and all combinations of one or more of the items listed. Expressions such as “at least one of…”, “one of…”, and “selected from” modify the entire column of elements and not individual elements of that column when preceding a column of elements. For example, throughout the disclosure, the expression “at least one of a, b, and c” means only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or variations thereof. Furthermore, the use of “may” when describing embodiments of the present disclosure means “one or more embodiments of the present disclosure”.

[0027] Because this disclosure can be adapted in various ways and has various embodiments, specific embodiments will be illustrated in the accompanying drawings and described in more detail in the detailed description. The effects and features of this disclosure, as well as the methods for achieving said effects and features, will become clear by referring to the embodiments described herein with reference to the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed below and can be implemented in various forms.

[0028] In the following description, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. The same or corresponding components will be indicated by the same reference numerals, and therefore redundant descriptions will not be provided.

[0029] As used herein, the singular forms “a”, “an”, and “the” are intended to also include the plural forms unless the context clearly indicates otherwise.

[0030] It should be further understood that the terms “comprises” and / or “comprising” used herein indicate the presence of the specified features or components, but do not exclude the presence or addition of one or more other features or components.

[0031] It should be understood that when a layer, area, or component is referred to as being "on" or "above" another layer, area, or component, it can be formed directly or indirectly on the other layer, area, or component. That is, for example, there can be intermediate layers, areas, or components.

[0032] For ease of explanation, the dimensions of the elements in the accompanying drawings may be enlarged. In other words, since the dimensions and thicknesses of the components in the drawings are arbitrarily illustrated for ease of explanation, the following embodiments of this disclosure are not limited thereto.

[0033] As used herein, the term "organic layer" refers to a single layer or all layers between the first and second electrodes of an organic light-emitting device. The materials contained in the "organic layer" are not limited to organic materials.

[0034] Figure 1 This is a schematic cross-sectional view of an organic light-emitting device 10 according to an embodiment. The organic light-emitting device 10 includes a first electrode 110, an organic layer 150, and a second electrode 190.

[0035] In the following text, we will discuss... Figure 1 The structure of the organic light-emitting device 10 according to the embodiment and the method of manufacturing the organic light-emitting device 10 are described.

[0036] First electrode 110

[0037] exist Figure 1 In this configuration, the substrate may additionally be located below the first electrode 110 or above the second electrode 190. The substrate may be a glass substrate and / or a plastic substrate. The substrate 100 may be a flexible substrate and may, for example, comprise a plastic with excellent (or suitable) heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or any combination thereof.

[0038] The first electrode 110 can be formed, for example, by depositing or sputtering a material for forming the first electrode 110 onto a substrate. When the first electrode 110 is an anode, a material with a high work function and which can be easily injected with holes can be used as the material for forming the first electrode 110.

[0039] The first electrode 110 can be a reflective electrode, a semi-transparent electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 can include indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), or any combination thereof. In one or more embodiments, when the first electrode 110 is a semi-transparent electrode or a reflective electrode, magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), or any combination thereof can be used as the material for forming the first electrode 110.

[0040] The first electrode 110 may have a single-layer structure comprising a single layer (e.g., composed of a single layer) or a multi-layer structure comprising multiple layers. For example, the first electrode 110 may have a three-layer structure of ITO / Ag / ITO.

[0041] Organic layer 150

[0042] The organic layer 150 is located on the first electrode 110.

[0043] The organic layer 150 may further include a hole transport region located between the first electrode 110 and the emitter layer and an electron transport region located between the emitter layer and the second electrode 190.

[0044] In the embodiments, the organic layer 150 may comprise organic compounds, metal-containing compounds (e.g., organometallic compounds), inorganic materials (e.g., metals and / or quantum dots) or any combination thereof.

[0045] In one or more embodiments, the organic layer 150 between the first electrode 110 and the second electrode 190 may include i) two or more emission units sequentially stacked on the first electrode 110, and ii) a charge generation layer located between the two or more emission units. When the organic layer 150 includes two or more emission units and a charge generation layer as described above, the organic light-emitting device 10 may be a tandem organic light-emitting device.

[0046] Hole transport region in organic layer 150

[0047] The hole transport region may have: i) a single-layer structure comprising a single material (e.g., composed of a single material), ii) a single-layer structure comprising multiple different materials (e.g., composed of multiple different materials), or iii) a multi-layer structure comprising multiple layers comprising different materials.

[0048] The hole transport region may include a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof.

[0049] For example, the hole transport region may have a multilayer structure including a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission auxiliary layer structure, a hole injection layer / emission auxiliary layer structure, a hole transport layer / emission auxiliary layer structure, or a hole injection layer / hole transport layer / electron blocking layer structure, wherein in each structure, the layers are stacked sequentially from the first electrode 110, but the embodiments of the present disclosure are not limited thereto.

[0050] The hole transport region may contain a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof:

[0051] Formula 201

[0052]

[0053] Formula 202

[0054]

[0055] Among them, in equations 201 and 202,

[0056] L 201 To L 204 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0057] L 205 It can be *-O-*', *-S-*', or *-N(Q) 201 )-*', unsubstituted or by at least one R 10a Replacement C1-C 20 alkylene groups, unsubstituted or with at least one R 10a Replacement C2-C 20 alkenyl groups, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0058] xa1 to xa4 can each be an integer from 0 to 5 independently.

[0059] xa5 can be an integer from 1 to 10, and

[0060] R 201 To R 204 and Q 201 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0061] R in Equation 202 201 and R 202 It can be optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups, or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form unsubstituted or substituted groups with at least one R group. 10a Replacement C8-C 60 Polycyclic groups (e.g., carbazole groups, etc.) (e.g., see compound HT16),

[0062] R in Equation 202 203and R 204 It can be optionally via a single bond, unsubstituted, or by at least one R 10a Substituted C1-C5 alkylene groups, or unsubstituted or substituted with at least one R 10a The substituted C2-C5 alkenyl groups are linked together to form unsubstituted or substituted groups with at least one R group. 10a Replacement C8-C 60 Polycyclic groups.

[0063] For example, the compound represented by formula 201 and the compound represented by formula 202 may each contain at least one of the groups represented by formulas CY201 to CY217:

[0064]

[0065] In equations CY201 to CY217, R 10b and R 10c Each can be independently related to the R discussed in this article. 10a The descriptions are the same, and the CY ring... 201 To CY 204 Each can be C3-C independently. 20 Carbocyclic groups or C1-C 20 Heterocyclic group. In formulas CY201 to CY217, at least one hydrogen atom can be R 10a replace.

[0066] In the implementation plan, in formulas CY201 to CY217, the ring CY 201 To CY 204 Each group can be an independent phenyl group, naphthol group, phenanthrene group, or anthracene group.

[0067] In one or more embodiments, the compound represented by formula 201 and the compound represented by formula 202 may each independently contain at least one of the groups represented by formulas CY201 to CY203.

[0068] In one or more embodiments, the compound represented by formula 201 may contain at least one of the groups represented by formulas CY201 to CY203 and at least one of the groups represented by formulas CY204 to CY217.

[0069] In one or more embodiments, in formula 201, xa1 can be 1, R 201 It can be a group represented by one of the formulas CY201 to CY203, xa2 can be 0, and R 202 It can be a group represented by one of the formulas CY204 to CY207.

[0070] In one or more embodiments, the compound represented by formula 201 and the compound represented by formula 202 may each independently not contain the groups represented by formulas CY201 to CY203.

[0071] In one or more embodiments, the compound represented by formula 201 and the compound represented by formula 202 may each independently not contain the groups represented by formulas CY201 to CY203, but may each contain at least one of the groups represented by formulas CY204 to CY217.

[0072] In one or more embodiments, the compound represented by formula 201 and the compound represented by formula 202 may each independently not contain groups represented by formulas CY201 to CY217.

[0073] For example, the hole transport region may contain one or any combination of compounds HT1 to HT44, m-MTDATA, TDATA, 2-TNATA, NPB (NPD), β-NPB, TPD, spiro-TPD, spiro-NPB, methylated-NPB, TAPC, HMTPD, 4,4',4”-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), and polyaniline / poly(4-styrenesulfonate) (PANI / PSS):

[0074]

[0075]

[0076]

[0077]

[0078] The thickness of the hole transport region can be approximately to approximately For example, about to approximately When the hole transport region includes a hole injection layer, a hole transport layer, or any combination thereof, the thickness of the hole injection layer can be approximately to approximately For example, about to approximately Furthermore, the thickness of the hole transport layer can be approximately to approximately For example, about to approximately When the thicknesses of the hole transport region, hole injection layer, and hole transport layer are within the above ranges, satisfactory (or suitable) hole transport characteristics can be obtained without a significant increase in driving voltage.

[0079] The emission assist layer can increase light emission efficiency by compensating for the optical resonant distance according to the wavelength of the light emitted by the emission layer, and the electron blocking layer can block or reduce the leakage of electrons from the electron transport region. The material contained in the hole transport region can be included in the emission assist layer and / or the electron blocking layer.

[0080] p-dopants

[0081] In addition to the materials described above, the hole transport region may contain a charge-generating material for improving conductivity. The charge-generating material may be uniformly or non-uniformly dispersed in the hole transport region (e.g., in the form of a single layer containing the charge-generating material (e.g., composed of charge-generating material)).

[0082] The charge-generating material can be, for example, a p-doped agent.

[0083] In the implementation scheme, the lowest unoccupied molecular orbital (LUMO) energy level of the p-dopant can be equal to or less than -3.5 eV.

[0084] In the embodiments, the p-dopant may include quinone derivatives, compounds containing cyano groups, compounds containing elements EL1 and EL2, or any combination thereof.

[0085] Non-limiting examples of quinone derivatives include TCNQ, F4-TCNQ, etc., and

[0086] Non-limiting examples of compounds containing cyano groups include HAT-CN, compounds represented by formula 221, etc.

[0087]

[0088] Equation 221

[0089]

[0090] In Equation 221,

[0091] R 221 To R 223 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, and

[0092] R221 To R 223 At least one of them can be independently a C1-C group substituted with: a cyano group; -F; -Cl; -Br; -I; or any combination thereof. 20 Alkyl groups; or C3-C groups substituted with any combination thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups.

[0093] In a compound containing elements EL1 and EL2, element EL1 can be a metal, a metalloid, or a combination thereof, and element EL2 can be a nonmetal, a metalloid, or a combination thereof.

[0094] Non-limiting examples of metals are: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), etc.); transition metals (e.g., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), manganese (Mn), technetium (Tc), rhenium (Re), iron (Fe), ruthenium (Ru), osmium (Os), cobalt. (Co), rhodium (Rh), iridium (Ir), nickel (Ni), palladium (Pd), platinum (Pt), copper (Cu), silver (Ag), gold (Au), etc.); later transition metals (e.g., zinc (Zn), indium (In), tin (Sn), etc.); lanthanides (e.g., lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), etc.); etc.

[0095] Non-limiting examples of metalloids include silicon (Si), antimony (Sb), and tellurium (Te).

[0096] Non-limiting examples of nonmetals are oxygen (O), halogens (e.g., F, Cl, Br, I, etc.).

[0097] For example, compounds containing elements EL1 and EL2 may include metal oxides, metal halides (e.g., metal fluorides, metal chlorides, metal bromides, metal iodides, etc.), quasi-metal halides (e.g., quasi-metal fluorides, quasi-metal chlorides, quasi-metal bromides, quasi-metal iodides, etc.), metal tellurides, or any combination thereof.

[0098] Non-limiting examples of metal oxides are tungsten oxides (e.g., WO, W2O3, WO2, WO3, W2O5, etc.), vanadium oxides (e.g., VO, V2O3, VO2, V2O5, etc.), molybdenum oxides (MoO, Mo2O3, MoO2, MoO3, Mo2O5, etc.), rhenium oxides (e.g., ReO3, etc.), etc.

[0099] Non-limiting examples of metal halides include alkali metal halides, alkaline earth metal halides, transition metal halides, post-transition metal halides, and lanthanide metal halides.

[0100] Non-limiting examples of alkali metal halides include LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, CsI, etc.

[0101] Non-limiting examples of alkaline earth metal halide compounds include BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2, BaI2, etc.

[0102] Non-limiting examples of transition metal halides include titanium halides (e.g., TiF4, TiCl4, TiBr4, TiI4, etc.), zirconium halides (e.g., ZrF4, ZrCl4, ZrBr4, ZrI4, etc.), hafnium halides (e.g., HfF4, HfCl4, HfBr4, HfI4, etc.), vanadium halides (e.g., VF3, VCl3, VBr3, VI3, etc.), niobium halides (e.g., NbF3, NbCl3, NbBr3, NbI3, etc.), and tantalum halides (e.g., TaF3, TaCl3, T...). (e.g., aBr3, TaI3, etc.) chromium halides (e.g., CrF3, CrCl3, CrBr3, CrI3, etc.), molybdenum halides (e.g., MoF3, MoCl3, MoBr3, MoI3, etc.), tungsten halides (e.g., WF3, WCl3, WBr3, WI3, etc.), manganese halides (e.g., MnF2, MnCl2, MnBr2, MnI2, etc.), technetium halides (e.g., TcF2, TcCl2, TcBr2, TcI2, etc.), rhenium halides (e.g., ReF2, ReCl2, ReBr...) 2. ReI2, etc.), iron halides (e.g., FeF2, FeCl2, FeBr2, FeI2, etc.), ruthenium halides (e.g., RuF2, RuCl2, RuBr2, RuI2, etc.), osmium halides (e.g., OsF2, OsCl2, OsBr2, OsI2, etc.), cobalt halides (e.g., CoF2, CoCl2, CoBr2, CoI2, etc.), rhodium halides (e.g., RhF2, RhCl2, RhBr2, RhI2, etc.), iridium halides (e.g., IrF2, IrCl2, IrB2, etc.). (e.g., r2, IrI2, etc.) Nickel halides (e.g., NiF2, NiCl2, NiBr2, NiI2, etc.) Palladium halides (e.g., PdF2, PdCl2, PdBr2, PdI2, etc.) Platinum halides (e.g., PtF2, PtCl2, PtBr2, PtI2, etc.) Copper halides (e.g., CuF, CuCl, CuBr, CuI, etc.) Silver halides (e.g., AgF, AgCl, AgBr, AgI, etc.) Gold halides (e.g., AuF, AuCl, AuBr, AuI, etc.)

[0103] Non-limiting examples of post-transition metals are zinc halides (e.g., ZnF2, ZnCl2, ZnBr2, ZnI2, etc.), indium halides (e.g., InI3, etc.), tin halides (e.g., SnI2, etc.), etc.

[0104] Non-limiting examples of lanthanide metal halides include YbF, YbF2, YbF3, SmF3, YbCl, YbCl2, YbCl3, SmCl3, YbBr, YbBr2, YbBr3, SmBr3, YbI, YbI2, YbI3, and SmI3.

[0105] Non-limiting examples of metal halide are antimony halides (e.g., SbCl5, etc.).

[0106] Non-limiting examples of metal tellurides include alkali metal tellurides (e.g., Li₂Te, Na₂Te, K₂Te, Rb₂Te, Cs₂Te, etc.), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe, BaTe, etc.), and transition metal tellurides (e.g., TiTe₂, ZrTe₂, HfTe₂, V₂Te₃, Nb₂Te₃, Ta₂Te₃, Cr₂Te₃, Mo₂Te₃, W₂Te₃, MnTe, TcTe, ReTe, F₂Te, etc.). (eTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu2Te, CuTe, Ag2Te, AgTe, Au2Te, etc.), post-transition metal tellurides (e.g., ZnTe, etc.), lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, etc.).

[0107] Emission layer in organic layer 150

[0108] When the organic light-emitting device 10 is a full-color organic light-emitting device, the emission layer can be patterned into a red emission layer, a green emission layer, and / or a blue emission layer, depending on the sub-pixel. In one embodiment, the emission layer may have a stacked structure of two or more layers selected from red, green, and blue emission layers, wherein the two or more layers are in contact with or spaced apart from each other. In one or more embodiments, the emission layer may contain two or more materials selected from red-emitting, green-emitting, and blue-emitting materials, wherein the two or more materials are mixed with each other in a single layer to emit white light.

[0109] The emitter layer can contain a host and dopants.

[0110] The thickness of the emission layer can be approximately to approximately For example, about to approximately When the thickness of the emitting layer meets any of the above ranges, excellent (or improved) light emission characteristics can be obtained without a significant increase in driving voltage.

[0111] The main body in the emission layer

[0112] In the implementation scheme, the main component may include a compound represented by formula 301:

[0113] Formula 301

[0114] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21 ,

[0115] In Equation 301,

[0116] Ar 301 and L 301 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0117] xb11 can be 1, 2, or 3.

[0118] xb1 can be an integer from 0 to 5.

[0119] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 alkenyl groups, unsubstituted or with at least one R 10a Replacement C2-C 60 The alkynyl group, unsubstituted or with at least one R 10a Replacement C1-C 60 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) or -P(=O)(Q 301 (Q) 302 ),

[0120] xb21 can be an integer from 1 to 5, and

[0121] Q 301 To Q 303 Each can be the same as the description regarding Q1.

[0122] For example, when xb11 in equation 301 is 2 or greater than 2, two or more Ar 301 They can be connected to each other via a single key.

[0123] In one or more embodiments, the body may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination thereof:

[0124] Formula 301-1

[0125]

[0126] Formula 301-2

[0127]

[0128] In Equations 301-1 and 301-2,

[0129] Ring A 301 To Ring A 304 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0130] X 301 It can be O, S, N[(L 304 ) xb4 -R 304 ]、C(R 304 (R) 305 ) or Si(R 304 (R) 305 ),

[0131] xb22 and xb23 can each be 0, 1, or 2 independently.

[0132] L 301 xb1 and R 301 Each can be the same as described above.

[0133] L 302 To L 304 They can be independently related to L 301 The descriptions are the same.

[0134] xb2 to xb4 can each be independently identical to the description of xb1, and

[0135] R 302 To R 305 and R 311 To R 314 They can be independently related to R. 301 The descriptions are the same.

[0136] In one or more embodiments, the host may include an alkaline earth metal complex. For example, the host may be a Be complex (e.g., compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0137] In one or more embodiments, the main body may include one or any combination of compounds H1 to H124, 9,10-bis(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthyl-2-yl)anthracene (MADN), 9,10-bis(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4'-bis(N-carbazolyl)-1,1'-biphenyl (CBP), 1,3-bis(carbazolyl-9-yl)benzene (mCP), and 1,3,5-tris(carbazolyl-9-yl)benzene (TCP), but embodiments of this disclosure are not limited thereto.

[0138]

[0139]

[0140]

[0141]

[0142]

[0143]

[0144] The main body may include a first main body compound, a second main body compound, and a third main body compound.

[0145] The first main compound can satisfy conditions 1-1 and 1-2:

[0146] Condition 1-1

[0147] S1(H1)>3eV

[0148] Conditions 1-2

[0149] T1(H1)>2.8eV,

[0150] Among them, in conditions 1-1 and 1-2,

[0151] S1(H1) represents the lowest excited singlet state energy level of the first host compound, and

[0152] T1(H1) represents the lowest excited triplet energy level of the first host compound.

[0153] In the organic light-emitting device according to the embodiment, the emitting layer contains a first host compound that satisfies conditions 1-1 and 1-2, which allows the use of an appropriate high-energy host and also improves the balance of electrons and holes in the emitting layer, thereby exhibiting low driving voltage, high efficiency and long lifespan.

[0154] In the implementation scheme, the first host compound and the second host compound can satisfy condition 2-1, and

[0155] In one or more embodiments, the first host compound and the third host compound may satisfy condition 2-2:

[0156] Condition 2-1

[0157] |LUMO(H1)|<|LUMO(H2)|

[0158] Condition 2-2

[0159] |LUMO(H1)|<|LUMO(H3)|,

[0160] Among them, in conditions 2-1 and 2-2,

[0161] LUMO(H1) represents the lowest unoccupied molecular orbital (LUMO) energy level of the first host compound.

[0162] LUMO(H2) represents the LUMO energy level of the second host compound, and

[0163] LUMO(H3) represents the LUMO energy level of the third host compound.

[0164] In the implementation scheme, the first host compound and the second host compound can satisfy condition 3-1, and

[0165] In one or more embodiments, the first host compound and the third host compound may satisfy condition 3-2:

[0166] Condition 3-1

[0167] |HOMO(H1)|>|HOMO(H2)|

[0168] Condition 3-2

[0169] |HOMO(H1)|>|HOMO(H3)|,

[0170] Among them, in conditions 3-1 and 3-2,

[0171] HOMO(H1) represents the highest unoccupied molecular orbital (HOMO) energy level of the first host compound.

[0172] HOMO(H2) represents the HOMO energy level of the second host compound, and

[0173] HOMO(H3) represents the HOMO energy level of the third host compound.

[0174] In the organic light-emitting device according to the embodiment, the emitting layer includes a first host compound, a second host compound, and a third host compound that satisfy conditions 2-1, 2-2, 3-1, and / or 3-2, so that an appropriate high-energy host can be used and the balance between electrons and holes can be improved, thereby exhibiting low driving voltage, high efficiency, and long lifespan.

[0175] In the implementation scheme, the first host compound may not form an excitocomplex with the second host compound.

[0176] In one or more embodiments, the first host compound may not form an excitocomplex with the third host compound.

[0177] In one or more embodiments, the second host compound may form an excitocomplex with the third host compound.

[0178] According to embodiments of this disclosure, when the host contained in the emitting layer of an organic light-emitting device is formed from a host compound that forms an excimer complex, the energy level of the formed excimer complex can be relatively low compared to the case where a single host compound is used. Therefore, the organic light-emitting device can have limitations in stably (appropriately) exhibiting low driving voltage, high efficiency, and long lifetime.

[0179] The organic light-emitting device according to the embodiment includes a first host compound, such that even when the second host compound and the third host compound form an excitocomplex, the energy levels of all hosts can be increased, thereby obtaining an organic light-emitting device with low driving voltage, high efficiency and long lifespan.

[0180] In the implementation scheme, the second host compound may be a hole transport compound that does not contain an electron transport portion, and the third host compound may be an electron transport compound that contains an electron transport portion or a bipolar compound that contains an electron transport portion.

[0181] When the second host compound is a hole transport compound and the third host compound is an electron transport compound or a bipolar compound, the balance between electrons and holes in the emitter layer of the organic light-emitting device can be improved, thereby exhibiting low driving voltage, high efficiency and long lifespan.

[0182] In an embodiment, the electron transport portion may include at least one selected from cyano groups, phosphine oxide groups, sulfone oxide groups, sulfonate groups, and nitrogen rings containing π-electron-deficient nitrogen.

[0183] In one or more embodiments, the electron transport portion may include at least one selected from pyridine, pyrimidine, triazine, quinoline, isoquinoline, and quinazoline groups.

[0184] In the implementation scheme, the first host compound may be a compound represented by Formula 1 or Formula 2:

[0185] Formula 1

[0186]

[0187] Formula 2

[0188]

[0189] In Equations 1 and 2,

[0190] X1 can be N[(L 30 ) a30 -(R 30 ) b30 ], O or S,

[0191] X2 can be a single bond, N[(L 40 ) a40 -(R 40 ) b40 ], O or S,

[0192] L 10 L 20 L 30 L 40 and L 50 Each can be either substituted or unsubstituted C3-C independently. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, or substituted or unsubstituted divalent nonaromatic fused heterocyclic groups,

[0193] a10, a20, a30, a40, and a50 can each be 0, 1, 2, or 3 independently.

[0194] R 10 R 20 R 30 R 40 R 50 R 60 R 70 and R 80 Each of these groups can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, or substituted or unsubstituted C1-C. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2),

[0195] b10, b20, b30, b40, b50, b60, b70, and b80 can each independently be 1, 2, 3, 4, or 5.

[0196] c10 and c20 can each be 0, 1, 2, 3 or 4 independently.

[0197] Replacement C3-C 10 Cycloalkyl groups, substituted C1-C 10 Heterocyclic alkyl groups, substituted C3-C 10Cycloalkylene groups, substituted C1-C 10 Heterocyclic alkenyl groups, substituted C6-C 60 arylene groups, substituted C1-C 60 Heteroaryl groups, substituted divalent nonaromatic fused polycyclic groups, substituted divalent nonaromatic fused heterocyclic groups, substituted C1-C 60 Alkyl groups, substituted C2-C 60 alkenyl groups, substituted C2-C 60 alkynyl group, substituted C1-C 60 alkoxy groups, substituted C3-C 10 Cycloalkyl groups, substituted C1-C 10 Heterocyclic alkyl groups, substituted C3-C 10 Cycloalkenyl groups, substituted C1-C 10 Heterocyclic alkenyl groups, substituted C6-C 60 aryl group, substituted C6-C 60 aryloxy groups, substituted C6-C 60 aryl thiols, substituted C1-C 60 At least one of the substituents of the heteroaryl group, the substituted monovalent nonaromatic fused polycyclic group, and the substituted monovalent nonaromatic fused heterocyclic group may be selected from:

[0198] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl groups and C1-C 60 alkoxy group,

[0199] Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q)12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 ) and -P(=O)(Q 11 (Q) 12 At least one substituted C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl groups and C1-C 60 alkoxy group,

[0200] C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups.

[0201] Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q)21 ) and -P(=O)(Q 21 (Q) 22 At least one substituted C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups, and

[0202] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) and -P(=O)(Q 31 (Q) 32 ),as well as

[0203] Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

[0204] In the implementation plan, L 10L 20 L 30 L 40 and L 50 Each group can be independently represented by one of formulas 3-1 to 3-26:

[0205]

[0206]

[0207] In equations 3-1 to 3-26,

[0208] Z 11 To Z 14 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amido group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthrene group, anthracene group, pyrene group, Benzyl group, pyridyl group, pyrazinyl group, pyrimidinyl group, pyridazinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, carbazole group, dibenzofuranyl group, dibenzothiophenyl group, triazineyl group, benzimidazoleyl group, phenanthrolineyl group and -Si(Q 31 (Q) 32 (Q) 33 ),

[0209] Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl groups, C1-C 10 alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, and naphthyl groups,

[0210] d3 can be an integer from 0 to 3.

[0211] d4 can be an integer from 0 to 4.

[0212] d5 can be an integer from 0 to 5.

[0213] d6 can be an integer from 0 to 6.

[0214] d8 can be an integer from 0 to 8, and

[0215] * and *' each represent a binding site with an adjacent atom.

[0216] In the implementation plan, in Equation 1, L 10 L 20 L 30 L 40 and L 50 At least one of them can be a group represented by formula 3-3.

[0217] In one or more implementations, R 10 R 20 R 30 R 40 R 50 R 60 R 70 and R 80 Each can be selected independently from:

[0218] Hydrogen, deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, tert-butyl group, vinyl group, propenyl group, butenyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, isobutoxy group, or tert-butoxy group; or

[0219] A group represented by one of formulas 5-1 to 5-41 and 6-1 to 6-55:

[0220]

[0221]

[0222]

[0223]

[0224]

[0225] In equations 5-1 to 5-41 and equations 6-1 to 6-55,

[0226] Y 31 and Y 32 Each can be independently O, S, C(Z) 34 (Z) 35 ), N(Z 34 ) or Si(Z 34 (Z) 35 ),

[0227] Y 33 To Y 35 Each can be an independent single bond, O, S, C (Z) 36 (Z) 37), N(Z 36 ) or Si(Z 36 (Z) 37 ),

[0228] Z 31 To Z 37 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C2-C 20 alkenyl groups, C2-C 20 alkynyl group, C1-C 20 Alkoxy groups, phenyl groups, biphenyl groups, triphenyl groups, naphthyl groups, fluorenyl groups, spiro-difluorenyl groups, phenanthrene groups, anthracene groups, benzo[a]phenanthrene groups, pyridyl groups, pyrimidinyl groups, carbazole groups, and triazine groups.

[0229] e2 can be 1 or 2.

[0230] e3 can be an integer from 1 to 3.

[0231] e4 can be an integer from 1 to 4.

[0232] e5 can be an integer from 1 to 5.

[0233] e6 can be an integer from 1 to 6.

[0234] e7 can be an integer from 1 to 7.

[0235] e9 can be an integer from 1 to 9, and

[0236] * indicates a binding site with an adjacent atom.

[0237] In the implementation scheme, the first host compound may be one of compounds A-01 to A-21:

[0238]

[0239]

[0240] In the implementation scheme, the second host compound may be a compound represented by one of formulas 311-1 to 311-5:

[0241] Formula 311-1

[0242]

[0243] Formula 311-2

[0244]

[0245] Formula 311-3

[0246]

[0247] Formula 311-4

[0248]

[0249] Formula 311-5

[0250]

[0251] In equations 311-1 to 311-5,

[0252] Ar 301 It can be substituted or unsubstituted C5-C 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups,

[0253] xb11 can be 1, 2, or 3.

[0254] A 301 To A 304 Each group can be independently selected from phenyl groups, naphthyl groups, phenanthrene groups, fluoranthene groups, benzo[a]phenanthrene groups, pyrene groups, etc. Groups, indene group, fluorene group, spiro-difluorene group, benzo[a]fluorene group, dibenzo[a]fluorene group, indole group, carbazole group, benzo[a]carbazole group, dibenzo[a]carbazole group, furan group, benzo[a]furan group, dibenzo[a]furan group, naphthofuran group, benzo[a]naphthofuran group, dinaphthofuran group, thiophene group, benzo[a]thiophene group, dibenzo[a]thiophene group, naphthothiophene group, benzo[a]naphthothiophene group and dinaphthothiophene group,

[0255] X 301 It can be O, S, N[(L 304 ) xb4 -R 304 ]、C[(L 304 ) xb4 -R 304 ][(L 305 ) xb5 -R 305 ] or Si[(L 304 ) xb4 -R 304 ][(L 305 ) xb5 -R 305 ],

[0256] X 302 Y 301 and Y 302Each can be an independent single bond, O, S, N[(L 305 ) xb5 -R 305 ]、C[(L 304 ) xb4 -R 304 ][(L 305 ) xb5 -R 305 ]、Si[(L 304 ) xb4 -R 304 ][(L 305 ) xb5 -R 305 Or S(=O)2, xb21 to xb24 can each be 0, 1 or 2 independently.

[0257] L 301 To L 306 Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0258] xb1 to xb5 can each be an integer from 0 to 5 independently.

[0259] xb6 can be an integer from 1 to 5.

[0260] R 301 To R 305 Each group can be independently selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, substituted or unsubstituted C1-C groups. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) and -P(=O)(Q 301 (Q) 302 ),

[0261] R 311 To R 314 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, -Si(Q) 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) and -P(=O)(Q 301 (Q) 302 ),as well as

[0262] Q 301 To Q 303 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 heteroaryl groups, C1-C 60 heteroaryloxy groups, C1-C 60 Heteroaryl thio groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

[0263] In the implementation scheme, the second main compound may be selected from fluorene-containing compounds, carbazole-containing compounds, diarylamine compounds, triarylamine compounds, dibenzofuran-containing compounds, dibenzothiophene-containing compounds, and dibenzothiophene-containing compounds.

[0264] In the implementation plan, A 301 To A 304 Each group can be independently selected from phenyl groups, indene groups, naphthyl groups, anthracene groups, fluorene groups, phenanthrene groups, and carbazole groups.

[0265] In the implementation plan, A 301 A 302 and A 304 Each group can be independently selected from phenyl groups, naphthyl groups, and phenanthrene groups.

[0266] In one or more implementation schemes, A 301 A 302 and A 304 Each can be a phenyl group or a naphthalene group.

[0267] In the implementation plan, L 301 To L 305 Each can be selected independently from:

[0268] Phenylidene group, naphthyl group, fluorenelidene group, spiro-difluorenelidene group, benzo[a]fluorenelidene group, dibenzo[a]fluorenelidene group, phenanthrenelidene group, anthracenelidene group, fluorenethracene group, benzo[a]phenanthrenelidene group, pyrene group, etc. Perylene group, pentaphenylene group, hexaphenylene group, pentaphenylene group, thiophene group, furanyl group, carbazolyl group, indoleyl group, isoindoleyl group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzothiophene group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiazolyl diazolyl group, oxadiazolyl group , pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolineyl group, isoquinolineyl group, benzoquinolineyl group, phthalazinyl group, naphridinyl group, quinoxalinyl group, quinoxalinyl group, phenanthrene-pyridinyl group, acridineyl group, phenanthrene-pyridinyl group, benzimidazoleyl group, isobenzothiazolyl group, benzimidazoleyl group, isobenzoxazoleyl group, isobenzoxazoleyl group, triazoleyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, and zazacarbazolyl group; and

[0269] Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, phenyl group, biphenyl group, triphenyl group, naphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthrene group, anthracene group, fluoranthracene group, benzo[a]phenanthrene group, pyrene group, Peryl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, thiophene group, furanyl group, carbazole group, indole group, isoindole group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazole group, dibenzocarbazole group, dibenzothiophene group, pyridyl group, imidazole group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group Pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphridinyl group, quinoxalinyl group, quinazolinyl group, phenanthridineyl group, acridineyl group, phenanthroxolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, azacarbazolyl group, -Si(Q) 31 (Q)32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) and -P(=O)(Q 31 (Q) 32 At least one substituted phenylene group, naphthylene group, fluorene group, spiro-difluorene group, benzo[a]fluorene group, dibenzo[a]fluorene group, phenanthrene group, anthracene group, fluorenyl anthracene group, benzo[a]phenanthrene group, pyrene group, etc. Perylene group, pentaphenylene group, hexaphenylene group, pentaphenylene group, thiophene group, furanyl group, carbazolyl group, indoleyl group, isoindoleyl group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzothiophene group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiazolyl diazolyl group, oxadiazolyl group The group includes: pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolineyl group, isoquinolineyl group, benzoquinolineyl group, phthalazinyl group, naphridinyl group, quinoxalinyl group, quinoxalinyl group, phenanthrene-pyridinyl group, phenanthrene-pyridinyl group, phenanthrene-imidazolyl group, isobenzothiazolyl group, benzoxazoleyl group, isobenzoxazoleyl group, triazoleyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, and zazacarbazolyl group.

[0270] In the implementation plan, R 301 To R 305 Each can be selected independently from:

[0271] Phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthryl group, anthraceneyl group, fluoranthraceneyl group, benzo[a]phenanthryl group, pyrene group, Peryl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, thienyl group, furanyl group, carbazole group, indole group, isoindole group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazole group, dibenzocarbazole group and dibenzothiophenyl group; and

[0272] Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, phenyl group, biphenyl group, triphenyl group, naphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthrene group, anthracene group, fluoranthracene group, benzo[a]phenanthrene group, pyrene group, Peryl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, thiophene group, furanyl group, carbazole group, indole group, isoindole group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazole group, dibenzocarbazole group, dibenzothiophene group, -Si(Q) 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) and -P(=O)(Q 31 (Q) 32 At least one substituted phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthryl group, anthraceneyl group, fluoranthraceneyl group, benzo[a]phenanthryl group, pyrene group, Peryl group, peryl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, thiophene group, furanyl group, carbazole group, indole group, isoindole group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazole group, dibenzocarbazole group and dibenzothiophene group.

[0273] In the implementation plan, Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl groups, C1-C 10 Alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, and naphthyl groups.

[0274] In the implementation scheme, the third host compound may be an electron transport compound containing an electron transport portion.

[0275] In the implementation scheme, the third host compound may be a compound represented by one of Formula 312-1 and Formula 312-2:

[0276] Formula 312-1

[0277]

[0278] Formula 312-2

[0279]

[0280] In Equations 312-1 and 312-2,

[0281] X 321 To X 327 Each can be N or C independently [(L 324 ) xb24 -R 324 ],

[0282] xb21 to xb24 can each be an integer from 0 to 5 independently.

[0283] L 321 To L 324 Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0284] R 321 To R 324 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, substituted or unsubstituted C1-C groups. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 321 (Q) 322 (Q) 323 -N(Q) 321 (Q) 322 -B(Q) 321 (Q) 322 -C(=O)(Q) 321 -S(=O)2(Q) 321 ) and -P(=O)(Q 321 (Q) 322 ),

[0285] R 321 To R 324 Two or more adjacent C3-C molecules may optionally be joined together to form substituted or unsubstituted C3-C molecules. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups, and

[0286] Q 321 To Q 323 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 heteroaryl groups, C1-C 60 heteroaryloxy groups, C1-C 60Heteroaryl thio groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

[0287] In the implementation scheme, the third main compound may be a triazine-containing compound, a triazole-containing compound, an imidazole-containing compound, and / or an oxazine-containing compound.

[0288] In one or more embodiments, the third host compound may be a bipolar compound containing an electron transport portion.

[0289] In one or more embodiments, the third host compound may be a compound represented by formula 313:

[0290] Formula 313

[0291]

[0292] Formula 313A

[0293]

[0294] In Equation 313,

[0295] A 31 A 32 and A 34 Each can be selected independently from C5-C. 60 Carbocyclic groups and C1-C 30 Heterocyclic groups, and

[0296] A 33 It can be a group represented by formula 313A.

[0297] In Equations 313 and 313A,

[0298] X 31 It can be selected from N[(L) 335 ) xb35 -(R 335 )]、O、S、Se、C[(L 335 ) xb35 -(R 335 )][(L 336 ) xb36 -(R 336 )] and Si[(L 335 ) xb35 -(R 335 )][(L 336 ) xb36 -(R 336 )],

[0299] xb31 to xb36 can each be an integer from 0 to 5 independently.

[0300] L 331 To L 336 Each can be independently selected from substituted or unsubstituted C3-C. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups.

[0301] R 331 To R 336 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, substituted or unsubstituted C1-C groups. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 331 (Q) 332 (Q) 333 -N(Q) 331 (Q) 332 -B(Q) 331 (Q) 332 -C(=O)(Q) 331 -S(=O)2(Q) 331 ) and -P(=O)(Q 331 (Q)332 ),

[0302] xb42 to xb44 can each be an integer from 0 to 10 independently, and

[0303] Q 331 To Q 333 Each group can be independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 heteroaryl groups, C1-C 60 heteroaryloxy groups, C1-C 60 Heteroaryl thio groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

[0304] In the implementation scheme, the third host compound may be a compound represented by one of formulas 313-1 to 313-6:

[0305] Formula 313-1

[0306]

[0307] Formula 313-2

[0308]

[0309] Formula 313-3

[0310]

[0311] Formula 313-4

[0312]

[0313] Formula 313-5

[0314]

[0315] Formula 313-6

[0316]

[0317] In equations 313-1 to 313-6

[0318] A 31 A 34 X 31 xb31 to xb36, L 331 To L 336 R 331 To R 336 xb42 and xb44 can each be the same as described above, and

[0319] xb43 can be 1 or 2.

[0320] In the implementation plan, A 31 A 32 and A 34 Each group can be independently selected from phenyl groups, indene groups, naphthyl groups, anthracene groups, fluorene groups, phenanthrene groups, pyridine groups, pyrimidine groups, pyrazine groups, pyridazine groups, and carbazole groups.

[0321] In one or more implementation schemes, A 31 A 32 and A 34 Each group can be independently selected from phenyl groups, naphthyl groups, phenanthrene groups, pyridine groups, pyrimidine groups, pyrazine groups, and pyridazine groups.

[0322] In one or more implementation schemes, A 31 A 32 and A 34 Each group can be an independent phenyl group, naphthyl group, or phenanthrene group.

[0323] In one or more implementation schemes, A 31 A 32 and A 34 Each can be an independent phenyl group or a naphthalene group.

[0324] In the implementation plan, L 321 To L 324 and L 331 To L 336 Each can be selected independently from:

[0325] Phenylidene group, naphthyl group, fluorenelidene group, spiro-difluorenelidene group, benzo[a]fluorenelidene group, dibenzo[a]fluorenelidene group, phenanthrenelidene group, anthracenelidene group, fluorenethracene group, benzo[a]phenanthrenelidene group, pyrene group, etc. Perylene group, pentaphenylene group, hexaphenylene group, pentaphenylene group, thiophene group, furanyl group, carbazolyl group, indoleyl group, isoindoleyl group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzothiophene group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiazolyl diazolyl group, oxadiazolyl group , pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolineyl group, isoquinolineyl group, benzoquinolineyl group, phthalazinyl group, naphridinyl group, quinoxalinyl group, quinoxalinyl group, phenanthrene-pyridinyl group, acridineyl group, phenanthrene-pyridinyl group, benzimidazoleyl group, isobenzothiazolyl group, benzimidazoleyl group, isobenzoxazoleyl group, isobenzoxazoleyl group, triazoleyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, and zazacarbazolyl group; and

[0326] Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, phenyl group, biphenyl group, triphenyl group, naphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthrene group, anthracene group, fluoranthracene group, benzo[a]phenanthrene group, pyrene group, Peryl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, thiophene group, furanyl group, carbazole group, indole group, isoindole group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazole group, dibenzocarbazole group, dibenzothiophene group, pyridyl group, imidazole group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiadiazolyl group, oxadiazolyl group Pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, phthalazinyl group, naphridinyl group, quinoxalinyl group, quinazolinyl group, phenanthridineyl group, acridineyl group, phenanthroxolinyl group, phenazinyl group, benzimidazolyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, azacarbazolyl group, -Si(Q) 31 (Q)32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) and -P(=O)(Q 31 (Q) 32 At least one substituted phenylene group, naphthylene group, fluorene group, spiro-difluorene group, benzo[a]fluorene group, dibenzo[a]fluorene group, phenanthrene group, anthracene group, fluorenyl anthracene group, benzo[a]phenanthrene group, pyrene group, etc. Perylene group, pentaphenylene group, hexaphenylene group, pentaphenylene group, thiophene group, furanyl group, carbazolyl group, indoleyl group, isoindoleyl group, benzofuranyl group, benzothiophene group, dibenzofuranyl group, dibenzothiophene group, benzocarbazolyl group, dibenzocarbazolyl group, dibenzothiophene group, pyridinyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, thiazolyl diazolyl group, oxadiazolyl group The group includes: pyrazinyl group, pyrimidinyl group, pyridazinyl group, triazinyl group, quinolineyl group, isoquinolineyl group, benzoquinolineyl group, phthalazinyl group, naphridinyl group, quinoxalinyl group, quinoxalinyl group, phenanthrene-pyridinyl group, phenanthrene-pyridinyl group, phenanthrene-imidazolyl group, isobenzothiazolyl group, benzoxazoleyl group, isobenzoxazoleyl group, triazoleyl group, tetrazolyl group, imidazopyridinyl group, imidazopyrimidinyl group, and zazacarbazolyl group.

[0327] In the implementation plan, R 321 To R 324 and R 331 To R 336 Each can be selected independently from:

[0328] Phenyl group, biphenyl group, terphenyl group, pentanenyl group, indole group, naphthyl group, chamomile cycloyl group, heptenyl group, indoleyl group, acenaphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthreneyl group, anthraceneyl group, fluoranthraceneyl group, benzo[a]phenanthreneyl group, pyrene group, Benzyl group, tetraphenyl group, furanyl group, perylyl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, rutinyl group, kosyl group, ovoidyl group, thiophenyl group, furanyl group, carbazoleyl group, indoleyl group, isoindoleyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazoleyl group, dibenzocarbazoleyl group, dibenzothiophenyl group and pyridyl group; and

[0329] Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclopentenyl group, cyclohexenyl group, phenyl group, biphenyl group, terphenyl group, C1-C 10 Alkyl-substituted phenyl groups, -F-substituted phenyl groups, pentanenyl groups, indole groups, naphthyl groups, chamomile cycloyl groups, heptenyl groups, indoleyl groups, acenaphthyl groups, fluorenyl groups, spiro-difluorenyl groups, benzo[a]fluorenyl groups, dibenzo[a]fluorenyl groups, phenanthrenyl groups, anthraceneyl groups, fluoranthraceneyl groups, benzo[a]phenanthreneyl groups, pyrene groups, Benzyl group, tetraphenyl group, furanyl group, perylyl group, pentaphenyl group, hexaphenyl group, pentaphenyl group, rutinyl group, kosyl group, ovoidyl group, thiophenyl group, furanyl group, carbazoleyl group, indoleyl group, isoindoleyl group, benzofuranyl group, benzothiophenyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazoleyl group, dibenzocarbazoleyl group, dibenzothiophenyl group, pyridyl group, -Si(Q) 31 (Q) 32 (Q) 33 ) and -N(Q 31 (Q) 32 At least one substituted phenyl group, biphenyl group, terphenyl group, pentanenyl group, indole group, naphthyl group, chamomile cycloyl group, heptenyl group, indoleyl group, acenaphthenic group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthreneyl group, anthraceneyl group, fluoranthraceneyl group, benzo[a]phenanthreneyl group, pyreneyl group, The group includes benzo[a], tetraphenyl[b], furan[b], peryl[b], pentaphenyl[a], hexaphenyl[b], pentaphenyl[a], rutin[b], koj[b], ovoid[b], thiophen[b], furan[b], carbazo[b], indole[b], isoindole[b], benzofuran[b], benzothiophen[b], dibenzofuran[b], dibenzothiophen[b], benzocarbazo[b], dibenzocarbazo[b], dibenzothiophen[b], dibenzothiophen[b], and pyridyl[b]

[0330] In the implementation plan, Q 31 To Q 33 Each can be independently selected from C1-C 10 Alkyl groups, C1-C 10 Alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, and naphthyl groups.

[0331] In the implementation plan, Q 301 To Q 303 Q 321 To Q 323 and Q 331 To Q 333 Each can be independently selected from C1-C 10 Alkyl groups, C1-C 10 Alkoxy group, phenyl group, biphenyl group, terphenyl group, pentanenyl group, indole group, naphthyl group, chamomile cycloyl group, heptenyl group, indoleyl group, acenaphthyl group, fluorenyl group, spiro-difluorenyl group, benzo[a]fluorenyl group, dibenzo[a]fluorenyl group, phenanthreneyl group, anthraceneyl group, fluoranthraceneyl group, benzo[a]phenanthreneyl group, pyrene group, The group includes benzo[a], tetraphenyl[b], furan[b], peryl[b], pentaphenyl[a], hexaphenyl[b], pentaphenyl[a], rutin[b], koj[b], ovoid[b], thiophen[b], furan[b], carbazo[b], indole[b], isoindole[b], benzofuran[b], benzothiophen[b], dibenzofuran[b], dibenzothiophen[b], benzocarbazo[b], dibenzocarbazo[b], dibenzothiophen[b], dibenzothiophen[b], and pyridyl[b]

[0332] In the implementation scheme, the main body may include (for example, it may consist of): a first main body compound, a second main body compound, and a third main body compound.

[0333] In one or more embodiments, in addition to the first host compound, the second host compound, and the third host compound, the host may further include host compounds such as those represented by formula 301.

[0334] Dopant contained in the emitter layer of organic layer 150

[0335] Dopants may include phosphorescent dopant compounds, fluorescent dopant compounds, delayed fluorescence dopant compounds, or any combination thereof.

[0336] Based on 100 parts by weight of the substrate, the amount of dopant in the emitter layer can be from about 0.01 parts by weight to about 15 parts by weight. However, embodiments of this disclosure are not limited thereto.

[0337] Phosphorescent dopant compounds

[0338] Phosphorescent dopant compounds may contain at least one transition metal as the center metal.

[0339] Phosphorescent dopant compounds may contain monodentate ligands, dipentate ligands, tridentate ligands, tetradentate ligands, pentadentate ligands, hexadentate ligands, or any combination thereof.

[0340] Phosphorescent dopant compounds can be electrically neutral.

[0341] For example, phosphorescent dopant compounds may include organometallic compounds represented by formula 401:

[0342] Formula 401

[0343] M(L 401 ) xc1 (L 402 ) xc2

[0344] Formula 402

[0345]

[0346] In Equations 401 and 402,

[0347] M can be a transition metal (e.g., iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), gold (Au), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), rhenium (Re), and / or thulium (Tm)).

[0348] L 401 The ligand can be represented by Equation 402, and xc1 can be 1, 2, or 3, where when xc1 is 2 or greater than 2, there are two or more L... 401 They can be the same or different from each other.

[0349] L 402 It can be an organic ligand, and xc2 can be 0, 1, 2, 3, or 4, wherein when xc2 is 2 or greater than 2, there are two or more L... 402 They can be the same or different from each other.

[0350] X 401 and X402 It can be either nitrogen or carbon, each independently.

[0351] Ring A 401 And Ring A 402 Each can be C3-C independently. 60 Carbocyclic groups or C1-C 60 Heterocyclic groups,

[0352] T 401 It can be a single bond, *-O-*', *-S-*', *-C(=O)-*', *-N(Q) 411 )-*'、*-C(Q 411 (Q) 412 )-*'、*-C(Q 411 )=C(Q 412 )-*'、*-C(Q 411 ) = *' or * = C = *',

[0353] X 403 and X 404 These can be chemical bonds (e.g., covalent or coordinate bonds), O, S, N (Q) independently. 413 ), B(Q) 413 ), P(Q 413 ), C(Q 413 (Q) 414 ) or Si(Q 413 (Q) 414 ),

[0354] Q 411 To Q 414 Each can be the same as the description regarding Q1.

[0355] R 401 and R 402 Each of these groups can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, unsubstituted, or substituted with at least one R. 10a Replacement C1-C 20 alkyl groups, unsubstituted or with at least one R 10a Replacement C1-C 20 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 401 (Q) 402 (Q) 403 -N(Q) 401 (Q) 402 -B(Q)401 (Q) 402 -C(=O)(Q) 401 -S(=O)2(Q) 401 ) or -P(=O)(Q 401 (Q) 402 ),

[0356] Q 401 To Q 403 Each can be the same as the description regarding Q1.

[0357] xc11 and xc12 can each be an integer from 0 to 10 independently, and

[0358] In Equation 402, * and *' each represent the binding site with M in Equation 401.

[0359] In the implementation scheme, in formula 402, i)X 401 It can be nitrogen, and X 402 It can be carbon, or ii)X 401 and X 402 Each of them can be nitrogen.

[0360] In one or more embodiments, when xc1 in equation 401 is 2 or greater than 2, two or more L 401 The two rings A in 401 It can be optionally via T as a linking group 402 Connected to each other, or two or more L's 401 The two rings A in 402 It can be optionally via T as a linking group 403 Connected to each other (see, for example, compounds PD1 through PD4 and PD7), where T 402 and T 403 Each can be related to T. 401 The descriptions are the same.

[0361] L in Equation 401 402 It can be an organic ligand. For example, L... 402 It can be a halogen group, a diketone group (e.g., an acetylacetonate group), a carboxylic acid group (e.g., a pyridine carboxylate group), a -C (=O), an isonitrile group, a -CN group, a phosphorus group (e.g., a phosphine group and / or a phosphite group), or any combination thereof.

[0362] The phosphorescent dopant compound may include, for example, one or any combination of compounds PD1 to PD25:

[0363]

[0364] Fluorescent dopant compounds

[0365] Fluorescent dopant compounds may include compounds containing amine groups, compounds containing styrene groups, or any combination thereof.

[0366] For example, fluorescent dopant compounds may include compounds represented by formula 501:

[0367] Formula 501

[0368]

[0369] In Equation 501,

[0370] Ar 501 L 501 To L 503 R 501 and R 502 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0371] xd1 to xd3 can each be independently 0, 1, 2, or 3, and

[0372] xd4 can be 1, 2, 3, 4, 5, or 6.

[0373] For example, Ar in Equation 501 501 It may contain fused cyclic groups consisting of three or more monocyclic groups fused together (e.g., anthracene groups, etc.). (Groups, pyrene groups, etc.)

[0374] In the implementation scheme, xd4 in formula 501 can be 2.

[0375] For example, fluorescent dopant compounds may include one or any combination of compounds FD1 to FD36, DPVBi, DPAVBi:

[0376]

[0377]

[0378]

[0379] Delayed fluorescence materials

[0380] The emission layer may contain delayed fluorescence dopant compounds.

[0381] The delayed fluorescence dopant compounds disclosed herein can be selected from any suitable compound capable of emitting delayed fluorescence via a delayed fluorescence emission mechanism.

[0382] In the implementation scheme, the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent dopant compound can be equal to or greater than 0 eV and equal to or less than 0.5 eV. When the difference between the triplet energy level (eV) and the singlet energy level (eV) of the delayed fluorescent dopant compound satisfies the above range, the energy upconversion from the triplet state to the singlet state in the delayed fluorescent dopant compound can be effectively (or appropriately) performed, thereby enabling the organic light-emitting device 10 to have improved luminous efficiency.

[0383] For example, delayed fluorescence dopant compounds may include i) containing at least one electron donor (e.g., a π-electron-rich C3-C). 60 Cyclic groups (such as carbazole groups) and at least one electron acceptor (e.g., sulfoxide groups, cyano groups, C1-C groups containing nitrogen lacking π electrons). 60 Materials containing cyclic groups, etc., ii) C8-C alloys comprising two or more cyclic groups sharing a common boron (B) and fused together with each other. 60 Polycyclic groups.

[0384] Examples of delayed fluorescence dopant compounds are at least one of compounds DF1 to DF9:

[0385]

[0386] Delayed fluorescence dopant compounds may not contain metal atoms. That is, delayed fluorescence dopant compounds can be clearly distinguished from phosphorescent dopant compounds that contain metal atoms. Delayed fluorescence dopant compounds may not contain, for example, iridium (Ir), platinum (Pt), palladium (Pd), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), rhodium (Rh), or thulium (Tm), so that delayed fluorescence dopant compounds can also be clearly distinguished from phosphorescent dopant compounds.

[0387] In the implementation, the emitting layer can emit blue light with a maximum emission wavelength equal to or greater than about 410 nm and equal to or less than about 490 nm.

[0388] Electron transport region in organic layer 150

[0389] The electron transport region may have: i) a single-layer structure comprising a single material (e.g., composed of a single material), ii) a single-layer structure comprising multiple different materials (e.g., composed of multiple different materials), or iii) a multi-layer structure comprising multiple layers comprising different materials.

[0390] The electron transport region may include a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0391] For example, the electron transport region may have an electron transport layer / electron injection layer structure, a hole blocking layer / electron transport layer / electron injection layer structure, an electron control layer / electron transport layer / electron injection layer structure, or a buffer layer / electron transport layer / electron injection layer structure, wherein for each structure, the constituent layers are stacked sequentially on the emitter layer, but the structure of the electron transport region is not limited to these.

[0392] The electron transport region (e.g., a buffer layer, hole blocking layer, electron control layer, and / or electron transport layer within the electron transport region) may contain C1-C atoms with at least one π-electron-deficient nitrogen atom. 60 Metal-free compounds with cyclic groups.

[0393] For example, the electron transport region may contain a compound represented by formula 601:

[0394] Formula 601

[0395] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21 ,

[0396] In Equation 601,

[0397] Ar 601 and L 601 Each can be independently unsubstituted or by at least one R. 10a Replacement C3-C 60 The carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups,

[0398] xe11 can be 1, 2, or 3.

[0399] xe1 can be 0, 1, 2, 3, 4, or 5.

[0400] R 601 It can be unsubstituted or replaced by at least one R 10a Replacement C3-C 60 Carbocyclic groups, unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups, -Si(Q) 601 (Q) 602 (Q) 603-C(=O)(Q) 601 -S(=O)2(Q) 601 ) or -P(=O)(Q 601 (Q) 602 ),

[0401] Q 601 To Q 603 Each can be the same as the description regarding Q1.

[0402] xe21 can be 1, 2, 3, 4, or 5, and

[0403] Ar 601 L 601 and R 601 At least one of them can be independently unsubstituted or by at least one R. 10a Substituted C1-C nitrogen containing π-electron-deficient atoms 60 Cyclic groups.

[0404] In the implementation scheme, when xe11 in formula 601 is 2 or greater than 2, two or more Ar 601 They can be connected to each other via a single key.

[0405] In one or more embodiments, Ar in Formula 601 601 It can be a substituted or unsubstituted anthracene group.

[0406] In one or more embodiments, the electron transport region may comprise a compound represented by Formula 601-1:

[0407] Formula 601-1

[0408]

[0409] In Equation 601-1,

[0410] X 614 It can be N or C(R) 614 ), X 615 It can be N or C(R) 615 ), X 616 It can be N or C(R) 616 ), and X 614 To X 616 At least one of them can be N,

[0411] L 611 To L 613 Each can be related to L. 601 The descriptions are the same.

[0412] xe611 to xe613 can each be identical to the description concerning xe1.

[0413] R 611 To R 613 Each can be related to R. 601 The same description, and

[0414] R 614 To R 616 Each of these can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 20 Alkyl groups, C1-C 20 alkoxy group, unsubstituted or with at least one R 10a Replacement C3-C 60 Carbocyclic group, or unsubstituted or with at least one R 10a Replacement C1-C 60 Heterocyclic groups.

[0415] For example, xe1 and xe611 to xe613 in Equations 601 and 601-1 can each be 0, 1 or 2 independently.

[0416] The electron transport region may contain one or any combination of compounds ET1 to ET45, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP), 4,7-diphenyl-1,10-phenanthroline (Bphen), Alq3, BAlq, TAZ, and NTAZ.

[0417]

[0418]

[0419] The thickness of the electron transport region can be approximately to approximately For example, about to approximately When the electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, or any combination thereof, the thickness of the buffer layer, the hole blocking layer, and / or the electron control layer can each be independently approximately [missing information]. to approximately For example, about to approximately Furthermore, the thickness of the electron transport layer can be approximately to approximately For example, about to approximately When the thickness of the buffer layer, hole blocking layer, electronic control layer, electronic transport layer and / or electronic transport region meets any of the above ranges, satisfactory (or suitable) electronic transport characteristics can be obtained without a significant increase in driving voltage.

[0420] In addition to the materials described above, the electron transport region (e.g., the electron transport layer in the electron transport region) may further contain a metallic material.

[0421] Metal-containing materials may include alkali metal complexes, alkaline earth metal complexes, or any combination thereof. The metal ion in an alkali metal complex may be Li, Na, K, Rb, or Cs ions, and the metal ion in an alkaline earth metal complex may be Be, Mg, Ca, Sr, or Ba ions. The ligands coordinating with the metal ions of the alkali metal or alkaline earth metal complexes may independently be hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthrene, cyclopentadiene, or any combination thereof.

[0422] For example, metal-containing materials may include Li complexes. Li complexes may include, for example, compounds ET-D1 (LiQ) and / or ET-D2:

[0423]

[0424] The electron transport region may include an electron injection layer that facilitates the injection of electrons from the second electrode 190. The electron injection layer may be in direct contact with the second electrode 190.

[0425] The electron injection layer may have: i) a monolayer structure comprising a single material (e.g., composed of a single material), ii) a monolayer structure comprising multiple different materials (e.g., composed of multiple different materials), or iii) a multilayer structure comprising multiple layers comprising different materials.

[0426] The electron injection layer may contain alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof.

[0427] Alkali metals may include Li, Na, K, Rb, Cs, or any combination thereof. Alkali earth metals may include Mg, Ca, Sr, Ba, or any combination thereof. Rare earth metals may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0428] The alkali metal compounds, alkaline earth metal compounds, and rare earth metal compounds can be oxides and / or halides of alkali metals, alkaline earth metals, and rare earth metals (e.g., fluorides, chlorides, bromides, and / or iodides), tellurides, or any combination thereof.

[0429] The alkali metal-containing compound can be an alkali metal oxide (e.g., Li2O, Cs2O, and / or K2O), an alkali metal halide (e.g., LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI), or any combination thereof. The alkaline earth metal-containing compound can include an alkaline earth metal oxide, such as BaO, SrO, CaO, Ba x Sr 1-x O (where x is a real number satisfying 0 < x < 1), Ba x Ca 1-x O (where x is a real number satisfying 0 < x < 1), etc. The rare earth metal-containing compound can include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, or any combination thereof. The rare earth metal-containing compound can include lanthanide metal tellurides. Examples of lanthanide metal tellurides are LaTe, CeTe, PrTe, NdTe, PmTe, SmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe, LuTe, La2Te3, Ce2Te3, Pr2Te3, Nd2Te3, Pm2Te3, Sm2Te3, Eu2Te3, Gd2Te3, Tb2Te3, Dy2Te3, Ho2Te3, Er2Te3, Tm2Te3, Yb2Te3, Lu2Te^{3}, etc.

[0430] The alkali metal complex, alkaline earth metal complex, and rare earth metal complex can each independently contain i) ions of the respective alkali metal, alkaline earth metal, and rare earth metal, and ii) ligands attached to the metal ions, such as hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyl oxazole, hydroxyphenyl thiazole, hydroxyphenyl oxadiazole, hydroxyphenyl thiadiazole, hydroxyphenyl pyridine, hydroxyphenyl benzimidazole, hydroxyphenyl benzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0431] The electron injection layer can contain the following (e.g., can be composed of the following): an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal-containing compound, an alkaline earth metal-containing compound, a rare earth metal-containing compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof, and / or can further contain an organic material (e.g., a compound represented by Formula 601).

[0432] In the implementation, the electron-injected layer comprises (e.g., consists of): i) an alkali metal-containing compound (e.g., an alkali metal halide), or ii) a) an alkali metal-containing compound (e.g., an alkali metal halide); and b) an alkali metal, alkaline earth metal, rare earth metal, or any combination thereof. For example, the electron-injected layer may be a KI:Yb co-deposited layer, an RbI:Yb co-deposited layer, etc.

[0433] When the electron injection layer further contains organic materials, alkali metals, alkaline earth metals, rare earth metals, alkali metal-containing compounds, alkaline earth metal-containing compounds, rare earth metal-containing compounds, alkali metal complexes, alkaline earth metal complexes, rare earth metal complexes, or any combination thereof can be uniformly or non-uniformly dispersed in the matrix containing organic materials.

[0434] The thickness of the electron injection layer can be approximately to approximately For example, about to approximately When the thickness of the electron injection layer meets the above range, satisfactory (or suitable) electron injection characteristics can be obtained without a significant increase in driving voltage.

[0435] Second electrode 190

[0436] The second electrode 190 is located on the organic layer 150 having a structure according to an embodiment of the present disclosure. The second electrode 190 may be a cathode serving as an electron injection electrode, and may be made of metals, alloys, conductive compounds, or any combination thereof, each having a low work function, as materials for forming the second electrode 190.

[0437] The second electrode 190 may contain at least one element selected from lithium (Li), silver (Ag), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), ytterbium (Yb), silver-ytterbium (Ag-Yb), ITO, IZO, and any combination thereof. The second electrode 190 may be a transmission electrode, a semi-transmission electrode, or a reflection electrode.

[0438] The second electrode 190 may have a single-layer structure or a multi-layer structure including two or more layers.

[0439] Cover layer

[0440] In an embodiment, the organic light-emitting device 10 may include a covering layer located outside the first electrode 110 or outside the second electrode 190.

[0441] For example, the organic light-emitting device 10 may further include at least one of a first capping layer located outside the first electrode 110 and a second capping layer located outside the second electrode 190, wherein at least one of the first capping layer and the second capping layer may contain a heterocyclic compound represented by Formula 1.

[0442] In this embodiment, the organic light-emitting device 10 may include:

[0443] A first capping layer located outside the first electrode 110 and comprising a heterocyclic compound represented by Formula 1;

[0444] A second capping layer located outside the second electrode 190 and comprising a heterocyclic compound represented by Formula 1; or

[0445] The first cover layer and the second cover layer.

[0446] The first capping layer may be located outside the first electrode 110, and / or the second capping layer may be located outside the second electrode 190. In some embodiments, the organic light-emitting device 10 may have a structure in which the first capping layer, the first electrode 110, the organic layer 150, and the second electrode 190 are stacked in a predetermined order, or in which the first capping layer, the first electrode 110, the organic layer 150, the second electrode 190, and the second capping layer are stacked in a predetermined order.

[0447] Light generated in the emitting layer of the organic layer 150 of the organic light-emitting device 10 can be led outward through the first electrode 110 and the first capping layer, each of which can be semi-transparent or transmissive, and / or light generated in the emitting layer of the organic layer 150 of the organic light-emitting device 10 can be led outward through the second electrode 190 and the second capping layer, each of which can be semi-transparent or transmissive.

[0448] The first and second capping layers can increase the external luminous efficiency based on the principle of constructive interference. Therefore, the light extraction efficiency of the organic light-emitting device 10 can be increased, thereby improving the luminous efficiency of the organic light-emitting device 10.

[0449] The first and second capping layers may each contain a material having a refractive index equal to or greater than 1.6 (at 589 nm).

[0450] The first and second covering layers can each be independently an organic covering layer containing organic materials, an inorganic covering layer containing inorganic materials, or a composite covering layer containing both organic and inorganic materials.

[0451] At least one of the first and second capping layers may independently comprise a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthyl phthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or a combination thereof. The carbocyclic compound, heterocyclic compound, and amine-containing compound may be independently substituted by substituents containing O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof.

[0452] In the implementation scheme, at least one of the first capping layer and the second capping layer may each independently contain a compound containing an amine group.

[0453] In one or more embodiments, at least one of the first and second capping layers may each independently contain a compound represented by formula 201, a compound represented by formula 202, or any combination thereof.

[0454] In one or more embodiments, at least one of the first capping layer and the second capping layer may each independently comprise one of compounds HT28 to HT33, one of compounds CP1 to CP6, β-NPB, or any combination thereof:

[0455]

[0456] electronic devices

[0457] Organic light-emitting devices can be included in a variety of suitable electronic devices. For example, electronic devices that include organic light-emitting devices can be light-emitting devices, verification devices, etc.

[0458] In addition to the organic light-emitting device, the electronic device (e.g., the light-emitting device) may further include: i) a color filter, ii) a color conversion layer, or iii) both a color filter and a color conversion layer. The color filter and / or the color conversion layer may be located in at least one direction of travel of the light emitted from the organic light-emitting device. For example, the light emitted from the organic light-emitting device may be blue light and / or white light. The organic light-emitting device may be the same as described above. In an embodiment, the color conversion layer may comprise quantum dots. Quantum dots may be the same as described in this specification.

[0459] An electronic device may include a first substrate. The first substrate may include a plurality of sub-pixel regions, a color filter may include a plurality of color filter regions corresponding to the plurality of sub-pixel regions, and a color conversion layer may include a plurality of color conversion regions corresponding to the plurality of sub-pixel regions.

[0460] A pixel-defining film can be located between multiple sub-pixel regions to define each of the sub-pixel regions.

[0461] The color filter may further include a light-blocking pattern located between multiple color filter regions, and the color conversion layer may further include a light-blocking pattern located between multiple color conversion regions.

[0462] Multiple color filter regions (and / or multiple color conversion regions) may include: a first region emitting (e.g., intended to emit) a first color of light; a second region emitting (e.g., intended to emit) a second color of light; and / or a third region emitting (e.g., intended to emit) a third color of light, wherein the first color of light, the second color of light, and / or the third color of light may have different maximum emission wavelengths from each other. For example, the first color of light may be red light, the second color of light may be green light, and the third color of light may be blue light. For example, the multiple color filter regions (and / or multiple color conversion regions) may contain quantum dots. In some embodiments, the first region may contain red quantum dots, the second region may contain green quantum dots, and the third region may not contain quantum dots. The quantum dots may be the same as those described in this specification. Each of the first, second, and / or third regions may further contain a scattering agent.

[0463] For example, an organic light-emitting device can emit a first light, a first region can absorb the first light to emit a first color light, a second region can absorb the first light to emit a second color light, and a third region can absorb the first light to emit a third color light. In this respect, the first, second, and third color lights can have different maximum emission wavelengths from each other. For example, the first light can be blue light, the first color light can be red light, the second color light can be green light, and the third color light can be blue light.

[0464] In addition to the organic light-emitting device as described above, the electronic device may further include a thin-film transistor. The thin-film transistor may include a source electrode, a drain electrode, and an active layer, wherein either the source electrode or the drain electrode may be electrically connected to either the first electrode or the second electrode of the organic light-emitting device.

[0465] Thin-film transistors may further include gate electrodes, gate insulating layers, etc.

[0466] The active layer can contain crystalline silicon, amorphous silicon, organic semiconductors, oxide semiconductors, etc.

[0467] The electronic device may further include a sealing portion for sealing the organic light-emitting device. The sealing portion may be disposed between the light-emitting device and a color filter and / or between the organic light-emitting device and a color conversion layer. The sealing portion allows light from the organic light-emitting device to be led out to the outside while simultaneously preventing or reducing the penetration of external air and moisture into the organic light-emitting device. The sealing portion may be a sealing substrate comprising a transparent glass substrate and / or a plastic substrate. The sealing portion may be a thin-film encapsulation layer comprising one or more organic layers and / or one or more inorganic layers. When the sealing portion is a thin-film encapsulation layer, the electronic device may be flexible.

[0468] Depending on the electronic device being used, various suitable functional layers may be additionally provided. Examples of functional layers are touchscreen layers, polarization layers, etc., and are not limited to these. The touchscreen layer may be a resistive touchscreen layer, a capacitive touchscreen layer, and / or an infrared touchscreen layer. The verification device may be, for example, a biometric verification device for verifying an individual using biometric information from a biometric body (e.g., fingertip, pupil, etc.).

[0469] In addition to organic light-emitting devices, the verification equipment may further include biometric information collectors.

[0470] Electronic devices can be applied to a variety of suitable displays, light sources, lighting equipment, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notebooks, electronic dictionaries, video game consoles, medical instruments (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram (ECG) displays, ultrasound diagnostic devices, or endoscopic displays), fish finders, various measuring instruments, meters (e.g., instruments for vehicles, aircraft, and / or ships), projectors, etc.

[0471] Figure 2 and Figure 3 Description

[0472] Figure 2 This is a cross-sectional view showing an embodiment of a light-emitting device according to the present disclosure.

[0473] Figure 2 The light-emitting device includes a substrate 100, a thin-film transistor (TFT), a light-emitting device, and a package 300 that seals the light-emitting device.

[0474] The substrate 100 may be a flexible substrate, a glass substrate, and / or a metal substrate. A buffer layer 210 may be located on the substrate 100. The buffer layer 210 may prevent or reduce the penetration of impurities through the substrate 100 and may be used to provide a flat (or suitably flat) surface on the substrate 100.

[0475] The TFT can be located on the buffer layer 210. The TFT may include an active layer 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0476] The active layer 220 may include inorganic semiconductors (such as silicon and / or polysilicon), organic semiconductors and / or oxide semiconductors, and may include source regions, drain regions and channel regions.

[0477] The gate insulating film 230 used to insulate the active layer 220 and the gate electrode 240 can be located on the active layer 220, and the gate electrode 240 can be located on the gate insulating film 230.

[0478] An intermediate insulating film 250 may be located on the gate electrode 240. The intermediate insulating film 250 may be located between the gate electrode 240 and the source electrode 260 to insulate the gate electrode 240 from the source electrode 260, and between the gate electrode 240 and the drain electrode 270 to insulate the gate electrode 240 from the drain electrode 270.

[0479] The source electrode 260 and the drain electrode 270 may be located on the intermediate insulating film 250. The intermediate insulating film 250 and the gate insulating film 230 may be formed to expose the source and drain regions of the active layer 220, and the source electrode 260 and the drain electrode 270 may contact the exposed portions of the source and drain regions of the active layer 220.

[0480] The TFT can be electrically connected to the organic light-emitting device to drive the organic light-emitting device, and can be covered by a passivation layer 280 for protection. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or a combination thereof. The organic light-emitting device may be provided on the passivation layer 280. The organic light-emitting device includes a first electrode 110, an organic layer 150, and a second electrode 190.

[0481] The first electrode 110 may be located on the passivation layer 280. The passivation layer 280 may expose certain portions of the drain electrode 270 without completely covering the drain electrode 270, and the first electrode 110 may be connected to the exposed portions of the drain electrode 270.

[0482] A pixel defining layer 290 comprising insulating material may be located on the first electrode 110. The pixel defining layer 290 may expose certain areas of the first electrode 110, and an organic layer 150 may be formed in the exposed areas of the first electrode 110. The pixel defining layer 290 may be an organic film based on polyimide and / or polyacrylic acid. In some embodiments, some layers of the organic layer 150 may extend over the pixel defining layer 290 to be arranged as a common layer.

[0483] The second electrode 190 can be disposed on the organic layer 150, and a capping layer 170 can be additionally formed on the second electrode 190. The capping layer 170 can be formed to cover the second electrode 190.

[0484] The encapsulation portion 300 may be located on the cover layer 170. The encapsulation portion 300 may be located on the organic light-emitting device to protect the organic light-emitting device from moisture and / or oxygen. The encapsulation portion 300 may include an inorganic film (e.g., silicon nitride (SiNx), silicon oxide (SiOx), indium tin oxide, indium zinc oxide, or any combination thereof), an organic film (e.g., polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acryloyl-based resin (e.g., polymethyl methacrylate, polyacrylic acid, etc.), epoxy-based resin (e.g., aliphatic glycidyl ether (AGE), etc.) or a combination thereof), or a combination of inorganic and organic films.

[0485] Figure 3 This is a cross-sectional view showing a light-emitting device according to another embodiment of the present disclosure.

[0486] Figure 3 Light-emitting devices and Figure 2 The light-emitting devices are the same, but... Figure 3 In the light-emitting device, a light-blocking pattern 500 and a functional region 400 are additionally arranged on the encapsulation portion 300. The functional region 400 may be i) a color filter region, ii) a color conversion region, or iii) a combination of a color filter region and a color conversion region. In an embodiment, the organic light-emitting device included in the light-emitting device may be a series organic light-emitting device.

[0487] In this specification, a quantum dot refers to a crystal of a semiconductor compound and may include any material capable of emitting light wavelengths of different lengths depending on the size of the crystal. Therefore, there are no limitations on the materials used for quantum dots. The diameter of a quantum dot is not particularly limited, but can be, for example, from about 1 nm to about 10 nm.

[0488] Quantum dots can be synthesized in an emitter layer containing quantum dots through wet chemical processes, metal-organic chemical vapor deposition, molecular beam epitaxy, or any similar process.

[0489] According to wet chemical processes, precursor materials can be added to organic solvents to grow quantum dot crystals. During crystal growth, the organic solvent acts as a dispersant that naturally coordinates to the surface of the quantum dot crystals and controls the crystal growth. Therefore, the growth of quantum dot particles can be appropriately controlled through a process that is easier (or more suitable) and less costly to perform compared to vapor deposition processes (e.g., metal-organic chemical vapor deposition (MOCVD) and / or molecular beam epitaxy (MBE)). In embodiments, the quantum dots can be III-VI semiconductor compounds; I-III-VI semiconductor compounds; II-VI semiconductor compounds; III-V semiconductor compounds; IV-VI semiconductor compounds; group IV elements or compounds; or any combination thereof.

[0490] For example, III-VI group semiconductor compounds may include binary compounds, such as In2S3; I-III-VI group semiconductor compounds may include ternary compounds, such as AgInS, AgInS2, CuInS and / or CuInS2; or any combination thereof.

[0491] For example, group II-VI semiconductor compounds may include: binary compounds, such as CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe and / or MgS; ternary compounds, such as CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnS e, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe and / or MgZnS; quaternary compounds, such as CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe and / or HgZnSTe; or any combination thereof.

[0492] For example, III-V semiconductor compounds may include: binary compounds, such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs and / or InSb; ternary compounds, such as GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNP, InNAs, InNSb, InPAs and / or InPSb; quaternary compounds, such as GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs and / or InAlPSb; or any combination thereof.

[0493] For example, group IV-VI semiconductor compounds may include: binary compounds, such as SnS, SnSe, SnTe, PbS, PbSe and / or PbTe; ternary compounds, such as SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe and / or SnPbTe; quaternary compounds, such as SnPbSSe, SnPbSeTe and / or SnPbSTe; or any combination thereof.

[0494] For example, Group IV elements or compounds may include: single elements, such as Si and / or Ge; binary compounds, such as SiC and / or SiGe; or any combination thereof.

[0495] In this respect, the elements contained in binary, ternary, or quaternary compounds can exist in the particles at a uniform concentration, or they can exist in the same particle in a state in which the concentration distributions are partially different.

[0496] Furthermore, quantum dots can have a single structure with a uniform concentration of each element contained within the corresponding quantum dot, or a core-shell dual structure. For example, the material contained in the core can be different from the material contained in the shell.

[0497] The shell of a quantum dot can act as a protective layer to maintain semiconductor properties by preventing or reducing the chemical degradation of the nucleus, and / or as a charging layer to impart electrophoretic properties to the quantum dot. The shell can be a single layer or multiple layers. The interface between the nucleus and the shell can have a concentration gradient, where the concentration of elements present in the shell decreases towards the center.

[0498] Examples of shells for quantum dots are metal oxides, non-metal oxides, semiconductor compounds, or any combination thereof. For example, metal oxides or non-metal oxides may include binary compounds (e.g., SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and / or NiO); and / or ternary compounds (e.g., MgAl2O4, CoFe2O4, NiFe2O4, and / or CoMn2O4), but embodiments of this disclosure are not limited thereto. In some embodiments, semiconductor compounds may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, etc., but embodiments of this disclosure are not limited thereto.

[0499] The full width at half maximum (FWHM) of the emission wavelength spectrum of quantum dots can be about 45 nm or less, for example, about 40 nm or less, or about 30 nm or less. When the FWHM of the emission wavelength spectrum of quantum dots is within this range, color purity and / or color reproducibility can be improved. Furthermore, light emitted through such quantum dots is omnidirectional, thus increasing the viewing angle.

[0500] Quantum dots can be, for example, spherical, pyramidal, multi-armed and / or cubic nanoparticles, nanotubes, nanowires, nanofibers and / or nanoplate particles, but embodiments of the present disclosure are not limited thereto.

[0501] By adjusting the size of the quantum dots, the band gap can also be adjusted, thereby obtaining light of various wavelengths in the emission layer containing the quantum dots. Therefore, by using quantum dots of different sizes, organic light-emitting devices that emit light of various wavelengths can be realized. In this embodiment, the size of the quantum dots can be selected to emit red, green, and / or blue light. Furthermore, various colors of light can be configured by combining the sizes of the quantum dots to emit white light.

[0502] Preparation method

[0503] The layers constituting the hole transport region, the emission layer, and the electron transport region can each be independently formed in a specific region using one or more suitable methods selected from vacuum deposition, spin coating, casting, Langmuir-Blodgett (LB) deposition, inkjet printing, laser printing, and laser-induced thermal imaging.

[0504] When forming layers constituting hole transport regions, emitter layers, and / or electron transport regions by vacuum deposition, by considering the materials to be included in the layers to be formed and the structure of the layers to be formed, deposition temperatures of about 100°C to about 500°C and 10... -8 To about 10 -3 The vacuum degree and about / seconds to approximately Deposition is carried out at a deposition rate of / second.

[0505] Definition of terminology

[0506] As used in this article, the term "C3-C" 60 A "carbocyclic group" refers to a cyclic group consisting solely of carbon atoms as cyclic atoms and having 3 to 60 cyclic carbon atoms, and as used herein by the term "C1-C". 60 A "heterocyclic group" refers to a cyclic group that further includes heteroatoms other than carbon atoms as cyclic atoms and has 1 to 60 cyclic carbon atoms. (C3-C) 60 Carbocyclic groups and C1-C 60 Heterocyclic groups can be monocyclic groups, each consisting of a single ring, or polycyclic groups, having two or more rings fused together. For example, C1-C 60 The total number of cyclic atoms in the heterocyclic group can be 3 to 61, for example 3 to 30, 3 to 24, or 3 to 18. In some embodiments, C3-C 60 The carbocyclic group can be C3-C 30 Carbocyclic groups, C3-C 24 Carbocyclic groups or C3-C 18 Carbocyclic group. In some embodiments, C1-C 60 Heterocyclic groups can be C1-C 30 Heterocyclic groups, C1-C 24 Heterocyclic groups or C1-C 18 Heterocyclic groups.

[0507] As used in this article, the term "cyclic group" includes C3-C 60 Carbocyclic groups and C1-C 60 Heterocyclic groups.

[0508] As used in this article, “π-electron-rich C3-C” 60 "Cyclic group" refers to a cyclic group that does not contain *-N=*' as a cyclic moiety, but contains 3 to 60 carbon atoms (e.g., 3 to 30, 3 to 24, or 3 to 18 carbon atoms), and as used herein, "C1-C of nitrogen lacking π electrons". 60"Cyclic group" refers to a heterocyclic group that contains *-N=*' as a cyclic part and has 1 to 60 carbon atoms (e.g., 1 to 30, 1 to 24 or 1 to 18 carbon atoms).

[0509] For example,

[0510] C3-C 60 The carbocyclic group can be i) a T1 group or ii) a fused cyclic group in which two or more T1 groups are fused together. C3-C 60 Non-limiting examples of carbocyclic groups include cyclopentadienyl groups, adamantyl groups, norbornel groups, phenyl groups, pentanenyl groups, naphthyl groups, chamomile cyclic groups, indole groups, acenaphthene groups, phenanthrene groups, anthracene groups, fluoranthene groups, benzo[a]phenanthrene groups, and pyrene groups. Groups, perylene groups, pentaphenyl groups, heptadiene groups, tetraphenyl groups, argentide groups, hexaphenyl groups, pentaphenyl groups, rutin groups, argentide groups, ovoid groups, indole groups, fluorene groups, spiro-difluorene groups, benzo[a]fluorene groups, indo[a]phenanthrene groups, and indo[a]anthracene groups.

[0511] For example, C1-C 60 The heterocyclic group can be i) a T2 group, ii) a fused cyclic group in which two or more T2 groups are fused together, or iii) a fused cyclic group in which at least one T2 group and at least one T1 group are fused together. C1-C 60Non-limiting examples of heterocyclic groups include pyrrole groups, thiophene groups, furan groups, indole groups, benzoindole groups, naphthoindole groups, isoindole groups, benzoisoindole groups, naphthoisoindole groups, benzothiophene groups, benzofuran groups, carbazole groups, dibenzothiophene groups, dibenzofuran groups, indole-carbazole groups, indole-carbazole groups, benzofuran-carbazole groups, benzothiophene-carbazole groups, benzothiophene-carbazole groups, benzoindole-carbazole groups, benzocarbazole groups, benzonaphthofuran groups, benzonaphthothiophene groups, benzonaphthothiophene groups, benzofuran-dibenzofuran groups, benzofuran-dibenzothiophene groups, benzothiophene-dibenzothiophene groups, pyrazole groups, imidazole groups, and triazole groups. Oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzoisoxazole group, benzothiazole group, benzoisothiazole group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, benzoquinoline group, benzoisoquinoline group, quinoxaline group, benzoquinoxaline group, quinazoline group, benzoquinazoline group, phenanthrene group, cinnamoline group, phthalazine group, naphthidine group, imidazopyridine group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, azacarbazole group, azafluorene group, azadibenzothiophene group, azadibenzothiophene group, azadibenzofuran group, etc.

[0512] For example, π-electron-rich C3-C 60 The cyclic group can be i) a T1 group, ii) a fused cyclic group in which two or more T1 groups are fused together, iii) a T3 group, iv) a fused cyclic group in which two or more T3 groups are fused together, or v) a fused cyclic group in which at least one T3 group and at least one T1 group are fused together. π-electron-rich C3-C 60 Non-limiting examples of cyclic groups include C3-C 60 Carbocyclic groups, pyrrole groups, thiophene groups, furan groups, indole groups, benzoindole groups, naphthoindole groups, isoindole groups, benzoisoindole groups, naphthoisoindole groups, benzothiophene groups, benzofuran groups, carbazole groups, dibenzothiophene groups, dibenzofuran groups, indole-carbazole groups, indole-carbazole groups, benzofuran-carbazole groups, benzothiophene-carbazole groups, benzothiophene-carbazole groups, benzoindole-carbazole groups, benzocarbazole groups, benzonaphthiophene groups, benzonaphthiophene groups, benzofuran-dibenzofuran groups, benzofuran-dibenzothiophene groups, benzothiophene-dibenzothiophene groups, etc.

[0513] For example, C1-C containing nitrogen lacking π electrons. 60 The cyclic group can be i) a T4 group, ii) a fused cyclic group in which two or more T4 groups are fused together, iii) a fused cyclic group in which at least one T4 group and at least one T1 group are fused together, iv) a fused cyclic group in which at least one T4 group and at least one T3 group are fused together, or v) a fused cyclic group in which at least one T4 group, at least one T1 group, and at least one T3 group are fused together. C1-C of nitrogen containing π-electron-deficient nitrogen. 60 Non-limiting examples of cyclic groups include pyrazole groups, imidazole groups, triazole groups, oxazole groups, isoxazole groups, oxadiazole groups, thiazole groups, isothiazole groups, thiadiazole groups, benzopyrazole groups, benzimidazole groups, benzoxazole groups, benziisoxazole groups, benzothiazole groups, benziisothiazole groups, pyridine groups, pyrazine groups, pyridazine groups, triazine groups, quinoline groups, isoquinoline groups, benzoquinoline groups, benzoisoquinoline groups, quinoxaline groups, benzoquinoxaline groups, quinazoline groups, benzoquinazoline groups, phenanthrene groups, cyclophosphine groups, phthalazine groups, naphthidine groups, imidazopyridine groups, imidazopyrimidine groups, imidazotriazine groups, imidazopyrazine groups, imidazopyridazine groups, azacarbazole groups, azafluorene groups, azadibenzothiophene groups, azadibenzothiophene groups, azadibenzofuran groups, etc.

[0514] The T1 group can be a cyclopropane group, cyclobutane group, cyclopentane group, cyclohexane group, cycloheptane group, cyclooctane group, cyclobutene group, cyclopentene group, cyclopentadienyl group, cyclohexene group, cyclohexadienyl group, cycloheptene group, adamantane group, norbornyl group (or bicyclo[2.2.1]heptane group), norbornene group, bicyclo[1.1.1]pentane group, bicyclo[2.1.1]hexane group, bicyclo[2.2.2]octane group or phenyl group.

[0515] Group T2 can be a furan group, thiophene group, 1H-pyrrole group, thiorrole group, 2H-pyrrole group, 3H-pyrrole group, imidazole group, pyrazole group, triazole group, tetraazole group, oxazole group, isoxazole group, oxadiazole group, thiazole group, isothiazole group, thiadiazole group, azirthiazole group, azirboranecyclopentadiene group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, or tetraazine group.

[0516] The T3 group can be a furan group, a thiophene group, a 1H-pyrrole group, a thiophene group, or a borocyclopentadiene group, and

[0517] The T4 group can be a 2H-pyrrole group, a 3H-pyrrole group, an imidazole group, a pyrazole group, a triazole group, a tetraazole group, an oxazole group, an isoxazole group, an oxadiazole group, a thiazole group, an isothiazole group, a thiadiazole group, an azathiazole group, an azaboranecyclopentadiene group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, or a tetraazine group.

[0518] As used in this article, the terms "cyclic group" and "C3-C" are similar to those used in this article. 60 "Carbon ring group", "C1-C" 60 Heterocyclic groups, π-electron-rich C3-C 60 "Cyclic groups" and "C1-C nitrogen containing π-electron-deficient groups" 60 "Cyclic group" refers, independently, to a group fused with any cyclic group, or a monovalent or polyvalent group (e.g., divalent, trivalent, tetravalent, etc.) according to the structure of a formula as used herein. For example, "phenyl group" can be a benzo[a] group, a phenyl group, a phenylene group, etc., which will be readily understood by those skilled in the art based on the structure of a formula including "phenyl group".

[0519] Unit price C3-C 60 Carbocyclic groups and monovalent C1-C 60 Examples of heterocyclic groups are C3-C. 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups; as well as divalent C3-C 60 Carbocyclic groups and divalent C1-C 60 Examples of heterocyclic groups are C3-C. 10 Cycloalkyl groups, C1-C 10 heterocyclic alkyl groups, C3-C 10 Cycloalkylene groups, C1-C 10 heterocyclic alkenyl groups, C6-C 60 arylene groups, C1-C 60 Hypoaryl groups, divalent non-aromatic fused polycyclic groups, and divalent non-aromatic fused heterocyclic groups.

[0520] As used in this article, the term "C1-C" 60"alkyl group" refers to a monovalent group of a straight-chain or branched aliphatic hydrocarbon having 1 to 60 carbon atoms, and non-limiting examples include methyl groups, ethyl groups, n-propyl groups, isopropyl groups, n-butyl groups, sec-butyl groups, isobutyl groups, tert-butyl groups, n-pentyl groups, tert-pentyl groups, neopentyl groups, isopentyl groups, sec-pentyl groups, 3-pentyl groups, sec-isopentyl groups, n-hexyl groups, isohexyl groups, sec-hexyl groups, tert-hexyl groups, n-heptyl groups, isoheptyl groups, sec-heptyl groups, tert-heptyl groups, n-octyl groups, isooctyl groups, sec-octyl groups, tert-octyl groups, n-nonyl groups, isononyl groups, sec-nonyl groups, tert-nonyl groups, n-decyl groups, isodel groups, sec-decyl groups, and tert-decyl groups. In some embodiments, C1-C 60 Alkyl groups can be C1-C 30 Alkyl groups, C1-C 20 alkyl groups or C1-C 10 Alkyl groups. As used in this document, "C1-C..." 60 "alkylene group" refers to a group that has a C1-C2 bond structure. 60 Divalent groups with the same structure as alkyl groups.

[0521] As used in this article, the term "C2-C" 60 "Alkenyl group" refers to the group located at C2-C. 60 The alkyl group has at least one carbon-carbon double bond at its middle and / or any end, and non-limiting examples include vinyl groups, propenyl groups, and butenyl groups. In some embodiments, C2-C 60 The alkenyl group can be C2-C 30 alkenyl groups, C2-C 20 alkenyl groups or C2-C 10 Alkenyl group. As used in this article, "C2-C" 60 "Ideinyl group" refers to a group that has a C2-C... 60 Divalent groups with the same structure as alkenyl groups.

[0522] As used in this article, the term "C2-C" 60 "Alkyne group" refers to the group located at C2-C. 60 The alkyl group has at least one carbon-carbon triple bond at its middle and / or any end, and non-limiting examples include ethynyl and propynyl groups. In some embodiments, C2-C 60 The alkynyl group can be C2-C 30 alkynyl group, C2-C 20 alkynyl group or C2-C 10 Alkynyl group. As used in this article, "C2-C" 60 "Imyynyl group" refers to a group that has a C2-C...60 A divalent group with the same structure as the alkynyl group.

[0523] As used in this article, the term "C1-C" 60 "Alkoxy group" refers to the group consisting of -OA 101 (where A) 101 It is C1-C 60 The alkyl group is a monovalent group, and non-limiting examples of it include methoxy groups, ethoxy groups and isopropoxy groups.

[0524] As used in this article, the term "C3-C" 10 "Cycloalkyl group" refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and non-limiting examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornene alkyl (or bicyclic [2.2.1]heptyl), bicyclic [1.1.1]pentyl, bicyclic [2.1.1]hexyl, and bicyclic [2.2.2]octyl. The term "C3-C" as used herein is also relevant. 10 "Cycloalkylene group" refers to a group that has a C3-C6 bond structure. 10 A divalent group with the same structure as a cycloalkyl group.

[0525] As used in this article, the term "C1-C" 10 "Heterocyclic alkyl group" refers to a monovalent cyclic group that further comprises at least one heteroatom other than a carbon atom (e.g., 1 to 5 or 1 to 3 heteroatoms, such as 1, 2, 3, 4 or 5 heteroatoms) as a cyclic atom and has 1 to 10 carbon atoms, and non-limiting examples are 1,2,3,4-oxatriazole alkyl groups, tetrahydrofuranyl groups, and tetrahydrothiophenyl groups. The term "C1-C" as used herein is also relevant. 10 "Heterocyclic alkyl groups" refers to groups with C1-C2 groups. 10 Divalent groups with the same structure as heterocyclic alkyl groups.

[0526] As used in this article, the term "C3-C" 10 "Cycloalkenyl group" refers to a monovalent monocyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and lacking aromaticity, and non-limiting examples include cyclopentenyl, cyclohexenyl, and cycloheptenyl groups. As used herein, the term "C3-C" is also relevant. 10 "Iridyl group" refers to a group that has a C3-C6 bond structure. 10 A divalent group with the same structure as the cycloalkenyl group.

[0527] As used in this article, the term "C1-C" 10A "heterocyclic alkenyl group" refers to a monovalent cyclic group that further includes at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms, such as 1, 2, 3, 4, or 5 heteroatoms) as a cyclic atom in its ring, has 1 to 10 carbon atoms, and contains at least one double bond. C1-C 10 Non-limiting examples of heterocyclic alkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, 2,3-dihydrothiophenyl, etc., as used herein by the term "C1-C". 10 "Heterocyclic alkenyl group" refers to a group that has a C1-C2 bond structure. 10 A divalent group with the same structure as a heterocyclic alkenyl group.

[0528] As used in this article, the term "C6-C" 60 An aryl group is a monovalent group that forms a carbocyclic aromatic system containing 6 to 60 carbon atoms. (C6-C) 60 Non-limiting examples of aryl groups include phenyl groups, heptalenyl groups, naphthyl groups, chamomile cycloyl groups, indoleyl groups, acenaphthenic groups, phenanthreneyl groups, anthraceneyl groups, fluoranthraceneyl groups, benzo[a]phenanthreneyl groups, and pyreneyl groups. Peryl group, peryl group, pentaphenyl group, heptalenyl group, tetraphenyl group, furanyl group, hexaphenyl group, pentaphenyl group, rutinyl group, keratyl group, ovoidyl group, etc. In some embodiments, C6-C 60 The aryl group can be C6-C. 30 aryl group, C6-C 24 aryl group or C6-C 18 Aryl group. As used in this article, "C6-C" 60 "Aromatic group" refers to a group that has a C6-C bond structure. 60 A divalent group with the same structure as the aryl group. When C6-C... 60 aryl groups and C6-C 60 When each of the aryl groups independently comprises two or more rings, the corresponding two or more rings can be fused together.

[0529] As used in this article, the term "C1-C" 60 A "heteroaryl group" refers to a monovalent group having an aromatic system comprising at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms, such as 1, 2, 3, 4, or 5 heteroatoms) as a cyclic atom and having 1 to 60 carbon atoms. C1-C 60Non-limiting examples of heteroaryl groups include pyridinyl groups, pyrimidinyl groups, pyrazinyl groups, pyridazinyl groups, triazinyl groups, quinolinyl groups, benzo[a]quinolinyl groups, isoquinolinyl groups, benzo[a]isoquinolinyl groups, quinoxalinyl groups, benzo[a]quinoxalinyl groups, quinazolinyl groups, benzo[a]quinazolinyl groups, cyclophosphinyl groups, phenanthrolinel groups, phthalazinyl groups, naphthidyl groups, etc. In some embodiments, C1-C 60 The heteroaryl group can be C1-C 30 heteroaryl groups, C1-C 24 heteroaryl groups or C1-C 18 Heteroaryl groups. As used herein, the term "C1-C" is relevant. 60 "Hypoaryl group" refers to a group that has a C1-C2 relationship with the C1-C2 group. 60 Divalent groups with the same structure as heteroaryl groups. When C1-C 60 heteroaryl groups and C1-C 60 When each heteroaryl group independently comprises two or more rings, the corresponding two or more rings can be fused together.

[0530] As used herein, the term "monovalent nonaromatic fused polycyclic group" refers to a monovalent group having two or more rings fused together, with only carbon atoms as cyclic atoms (e.g., having 8 to 60 carbon atoms, such as 8 to 30, 8 to 24, or 8 to 18 carbon atoms), and lacking aromaticity throughout its molecular structure (e.g., the molecular structure as a whole is nonaromatic). Non-limiting examples of monovalent nonaromatic fused polycyclic groups are indenyl groups, fluorenyl groups, spiro-difluorenyl groups, benzo[a]fluorenyl groups, indo[a]phenanthrene groups, and indo[a]anthrayl groups. As used herein, the term "divalent nonaromatic fused polycyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused polycyclic group.

[0531] As used herein, the term "monovalent nonaromatic fused heterocyclic group" refers to a monovalent group having two or more rings fused together, further comprising at least one heteroatom (e.g., 1 to 5 or 1 to 3 heteroatoms, e.g., 1, 2, 3, 4 or 5 heteroatoms) as a cyclic atom in addition to carbon atoms (e.g., having 1 to 60 carbon atoms, such as 1 to 30, 1 to 24 or 1 to 18 carbon atoms), and being nonaromatic throughout its molecular structure (e.g., the molecular structure as a whole is nonaromatic). Non-limiting examples of monovalent non-aromatic fused heterocyclic groups include pyrrolyl groups, thiophenyl groups, furanyl groups, indole groups, benzoindole groups, naphthoindole groups, isoindole groups, benzoisoindole groups, naphthoisoindole groups, benzothiolyl groups, benzothiphenyl groups, benzofuranyl groups, carbazoyl groups, dibenzothiolyl groups, dibenzothiphenyl groups, dibenzofuranyl groups, azacarbazoyl groups, azafluorenyl groups, azadibenzothiolyl groups, azadibenzothiphenyl groups, azadibenzofuranyl groups, pyrazolyl groups, imidazoleyl groups, triazoleyl groups, tetraazoleyl groups, oxazolyl groups, isoxazolyl groups, thiolyl groups, isothiazolyl groups, and oxadiazoleyl groups. Groups, including thiadiazole group, benzopyrazole group, benzoimidazolium group, benzooxazolium group, benzothiazolium group, benzooxadiazole group, benzothiadiazole group, imidazopyridyl group, imidazopyrimidine group, imidazotriazine group, imidazopyrazine group, imidazopyridazine group, indolecarbazole group, indolocarbazole group, benzofuranocarbazole group, benzothiophenecarbazole group, benzothiophenecarbazole group, benzoindolocarbazole group, benzocarbazole group, benzonaphthuronyl group, benzonaphthiophene group, benzofuranodibenzofuranyl group, benzofuranodibenzothiophene group, benzothiophenedibenzothiophene group, etc. As used in this article, the term "divalent nonaromatic fused heterocyclic group" refers to a divalent group having the same structure as a monovalent nonaromatic fused heterocyclic group.

[0532] As used in this article, the term "C6-C" 60 "Aryloxy group" refers to the group composed of -OA 102 (where A) 102 It is C6-C 60 A monovalent group (represented by an aryl group), and as used herein by the term "C6-C" 60 "Aryl thioyl group" refers to the group composed of -SA 103 (where A) 103 It is C6-C 60 A monovalent group (aryl group).

[0533] As used in this article, "R" 10a"Could be:

[0534] Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group or nitro group;

[0535] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl groups, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 -P(=O)(Q) 11 (Q) 12 C1-C substituted by (or any combination thereof) 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group or C1-C 60 alkoxy group;

[0536] Each of the following groups is unsubstituted or replaced: -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group, C6-C 60 aryl thioyl groups, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 -P(=O)(Q) 21 (Q) 22 C3-C substituted by any combination thereof 60Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 aryloxy group or C6-C 60 aryl thioyl group; or

[0537] -Si(Q 31 (Q) 32 (Q) 33 -N(Q) 31 (Q) 32 -B(Q) 31 (Q) 32 -C(=O)(Q) 31 -S(=O)2(Q) 31 ) or -P(=O)(Q 31 (Q) 32 ).

[0538] In this specification, Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 These can be, independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl group; cyano group; nitro group; C1-C 60 Alkyl group; C2-C 60 alkenyl group; C2-C 60 alkynyl group; C1-C 60 Alkoxy groups; or each independently unsubstituted or replaced by deuterium, -F, cyano groups, C1-C 60 Alkyl groups, C1-C 60 C3-C substituted with alkoxy groups, phenyl groups, biphenyl groups, or any combination thereof 60 Carbocyclic groups or C1-C 60 Heterocyclic groups.

[0539] As used herein, the term "heteroatom" refers to any atom other than a carbon atom. Examples of heteroatoms are O, S, N, P, Si, B, Ge, Se, or any combination thereof.

[0540] As used herein, the term "Ph" refers to a phenyl group, "Me" refers to a methyl group, "Et" refers to an ethyl group, and "tert-Bu" or "Bu" refers to a tert-Bu group. t "" refers to the tert-butyl group, and as used herein, the term "OMe" refers to the methyl methacrylate group.

[0541] As used herein, the term "biphenyl group" refers to a "phenyl group substituted with a phenyl group." For example, a "biphenyl group" can be a group with C6-C... 60 The aryl group is a substituted phenyl group.

[0542] As used herein, the term "terphenyl group" refers to "a phenyl group substituted with a biphenyl group." For example, a "terphenyl group" can be a phenyl group having a C6-C substituted structure. 60 C6-C substituted with aryl group 60 The aryl group is a substituted phenyl group.

[0543] Unless otherwise defined, as used herein, * and *' each refer to the binding site with the adjacent atom in the corresponding formula.

[0544] The compounds and organic light-emitting devices according to embodiments of the present disclosure will be described in more detail below with reference to the embodiments.

[0545] Example

[0546] Example 1

[0547] The ITO glass substrate was cut into 50mm × 50mm × 0.5mm pieces, ultrasonicated with isopropanol and pure water for 5 minutes each, and then cleaned by exposure to ultraviolet light and ozone for 30 minutes. The ITO glass substrate was then fed into a vacuum deposition apparatus.

[0548] First, a suitable material, NPB, for hole injection, is vacuum deposited onto an ITO glass substrate to form a structure with… A hole injection layer of a certain thickness is formed, and a hole transport material mCP is vacuum deposited on the hole injection layer to form a hole injection layer with a certain thickness. A hole transport layer of a certain thickness.

[0549] Compound A-01, a co-substrate of host 1 and host 2 forming an excimer complex, and dopant PHD (where the weight ratio of A-01:host 1:host 2:PHD is 10:140:140:10) are co-deposited on the hole transport layer to form a hole transport layer. The thickness of the emission layer.

[0550] ETL1 and Liq (in a 5:5 weight ratio) were deposited on the emitter layer to form a structure with... An electron transport layer of a certain thickness is formed, and Al is deposited on the electron transport layer to form an electron transport layer with a certain thickness. An Al electrode (i.e., a cathode electrode) of a certain thickness is formed. Compound HT28 is deposited on the Al electrode to form an Al electrode with... A thick covering layer is applied to complete the fabrication of the organic light-emitting device.

[0551]

[0552] Examples 2 to 8 and Comparative Examples 1 to 4

[0553] The organic light-emitting device was manufactured in essentially the same manner as in Example 1, but the compounds shown in Table 2 were used when forming the corresponding emitting layer.

[0554] Evaluation Example 1

[0555] For the first, second, and third host compounds used in each of the organic light-emitting devices of Examples 1 to 8 and Comparative Examples 1 to 4, the HOMO energy level was measured by cyclic voltammetry (CV), and the LUMO energy level was measured by UV-measured band gap. Here, S1 is the photoluminescence spectrum, and T1 is the low-temperature photoluminescence spectrum. The results of these measurements are recorded and are shown in Table 1. HT1, as a hole transport compound, has a HOMO energy level of 5.11 eV.

[0556] Table 1

[0557] Compound S1 (eV) T1 (eV) LUMO (eV) HOMO (eV) A-01 3.52 3.07 -1.91 -5.51 A-09 3.66 2.93 -2.13 -5.64 A-11 3.65 2.93 -2.17 -5.68 A-15 3.65 3.09 -1.88 -5.65 A-17 3.61 3.10 -1.91 -5.65 Host 1 3.40 3.06 -1.91 -5.55 Host 2 3.59 3.05 -2.72 -6.50 Host 3 3.11 3.02 -1.91 -5.32 S1 2.37 2.16 -2.7 -5.1 Compound B 3.32 2.91 -1.81 -5.66 Compound C 3.28 2.80 -2.35 -5.63

[0558]

[0559] Evaluation Example 2

[0560] The efficiency and lifespan of each of the organic light-emitting devices of Examples 1 to 8 and Comparative Examples 1 to 4 were measured using a Keithley SMU 236 and a luminance meter PR650, and the results are shown in Table 2.

[0561] Table 2

[0562]

[0563]

[0564] Referring to Tables 1 and 2, it is confirmed that the organic light-emitting device according to one or more embodiments of this disclosure has low driving voltage and excellent characteristics in terms of luminous efficiency, external quantum efficiency (EQE), and lifetime. Specifically, it is confirmed that the organic light-emitting devices of Examples 1 to 8 have superior luminous efficiency and / or superior lifetime characteristics compared to the luminous efficiency and / or lifetime characteristics of the organic light-emitting devices of Comparative Examples 1 to 4. Furthermore, it is confirmed that, unlike the organic light-emitting devices of Comparative Examples 2 and 3, the organic light-emitting devices of Examples 1 to 8 are suitable for emitting blue light.

[0565] According to one or more implementation schemes, organic light-emitting devices can have low driving voltage, high efficiency and long service life.

[0566] As used herein, the terms “use,” “using,” and “used” can be considered synonymous with the terms “utilize,” “utilizing,” and “utilized,” respectively.

[0567] Furthermore, the terms “basically,” “about,” and similar terms are used as terms of approximation rather than terms of degree, and are intended to explain the inherent biases in measurements or calculations that would be recognized by a person skilled in the art.

[0568] Furthermore, any numerical ranges listed herein are intended to include all subranges of the same numerical precision falling within the listed range. For example, the range “1.0 to 10.0” is intended to include all subranges between the listed minimum value of 1.0 and the listed maximum value of 10.0 (and inclusive), i.e., a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit listed herein is intended to include all lower numerical limits falling within it, and any minimum numerical limit listed in this specification is intended to include all higher numerical limits falling within it. Therefore, the applicant reserves the right to amend this specification (including the claims) to expressly list any subranges falling within the scope expressly listed herein.

[0569] It should be understood that the embodiments described herein are for descriptive purposes only and not for limiting purposes. The description of features or aspects within each embodiment should generally be considered applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, those skilled in the art will understand that various changes in form and detail may be made herein without departing from the spirit and scope of this disclosure as defined by the claims and their equivalents.

Claims

1. An organic light-emitting device, comprising: First electrode; The second electrode facing the first electrode; as well as An organic layer comprising an emission layer is located between the first electrode and the second electrode. in: The emitter layer comprises a host and a dopant. The main body includes a first main compound, a second main compound, and a third main compound, and The first main compound satisfies conditions 1-1 and 1-2: Condition 1-1 S1(H1) > 3 eV Conditions 1-2 T1(H1) > 2.8 eV, and Among them, in conditions 1-1 and 1-2, S1(H1) represents the lowest excited singlet state energy level of the first host compound, and T1(H1) represents the lowest excited triplet energy level of the first host compound. Wherein the first host compound and the second host compound satisfy condition 3-1, and the first host compound and the third host compound satisfy condition 3-2: Condition 3-1 | HOMO (H1) | > | HOMO (H2) | Condition 3-2 | HOMO (H1) | > | HOMO (H3) |, Among them, in conditions 3-1 and 3-2, HOMO (H1) represents the highest unoccupied molecular orbital energy level of the first host compound. HOMO (H2) represents the highest unoccupied molecular orbital energy level of the second host compound, and HOMO (H3) represents the highest unoccupied molecular orbital energy level of the third host compound.

2. The organic light-emitting device of claim 1, wherein the first host compound and the second host compound satisfy condition 2-1, and The first host compound and the third host compound satisfy condition 2-2: Condition 2-1 | LUMO (H1) | < | LUMO (H2) | Condition 2-2 |LUMO (H1) | < |LUMO (H3) |, and in, In condition 2-1 and condition 2-2, LUMO (H1) represents the lowest unoccupied molecular orbital energy level of the first host compound. LUMO (H2) represents the lowest unoccupied molecular orbital energy level of the second host compound, and LUMO (H3) represents the lowest unoccupied molecular orbital energy level of the third host compound.

3. The organic light-emitting device as described in claim 1, wherein, Based on 100 parts by weight of the main body, the amount of the first main compound is from 0.1 parts by weight to 20 parts by weight.

4. The organic light-emitting device of claim 1, wherein the first host compound does not form an excitocomplex with the second host compound, and The first host compound does not form an excitocomplex with the third host compound.

5. The organic light-emitting device of claim 1, wherein the second host compound and the third host compound in the emitting layer form an excitocomplex.

6. The organic light-emitting device of claim 1, wherein the second host compound is a hole transport compound that does not contain an electron transport portion, and The third host compound is an electron transport compound containing an electron transport portion, or a bipolar compound containing an electron transport portion.

7. The organic light-emitting device of claim 1, wherein the first host compound is represented by formula 1 or formula 2: Formula 1 Formula 2 ,as well as in, In Equations 1 and 2, X1 is N[(L 30 ) a30 -(R 30 ) b30 ], O or S, X2 is a single bond, N[(L 40 ) a40 -(R 40 ) b40 ], O or S, L 10 L 20 L 30 L 40 and L 50 Each is independently either substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, or substituted or unsubstituted divalent nonaromatic fused heterocyclic groups, a10, a20, a30, a40, and a50 are each independently 0, 1, 2, or 3. R 10 R 20 R 30 R 40 R 50 R 60 R 70 and R 80 Each of these groups is independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, or substituted or unsubstituted C1-C. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent non-aromatic fused polycyclic groups, substituted or unsubstituted monovalent non-aromatic fused heterocyclic groups, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), b10, b20, b30, b40, b50, b60, b70, and b80 are each independently 1, 2, 3, 4, or 5. c10 and c20 are each independently 0, 1, 2, 3 or 4. The substituted C3-C 10 Cycloalkyl groups, the substituted C1-C 10 Heterocyclic alkyl groups, the substituted C3-C 10 The cyclic alkenyl group, the substituted C1-C 10 Heterocyclic alkenyl groups, the substituted C6-C 60 arylene groups, the substituted C1-C 60 Hypoaryl group, the substituted divalent nonaromatic fused polycyclic group, the substituted divalent nonaromatic fused heterocyclic group, the substituted C1-C 60 alkyl groups, the substituted C2-C 60 alkenyl groups, the substituted C2-C 60 alkynyl group, the substituted C1-C 60 alkoxy group, the substituted C3-C 10 Cycloalkyl groups, the substituted C1-C 10 Heterocyclic alkyl groups, the substituted C3-C 10 cycloalkenyl groups, the substituted C1-C 10 Heterocyclic alkenyl groups, the substituted C6-C 60 aryl group, the substituted C6-C 60 aryloxy group, the substituted C6-C 60 arylthio groups, the substituted C1-C 60 The heteroaryl group, the substituted monovalent nonaromatic fused polycyclic group, and at least one substituent of the substituted monovalent nonaromatic fused heterocyclic group are selected from: Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl groups and C1-C 60 alkoxy group, Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -Si(Q) 11 (Q) 12 (Q) 13 -N(Q) 11 (Q) 12 -B(Q) 11 (Q) 12 -C(=O)(Q) 11 -S(=O)2(Q) 11 ) and -P(=O)(Q 11 (Q) 12 At least one substituted C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl groups and C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups. Each group is selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, -Si(Q) 21 (Q) 22 (Q) 23 -N(Q) 21 (Q) 22 -B(Q) 21 (Q) 22 -C(=O)(Q) 21 -S(=O)2(Q) 21 ) and -P(=O)(Q 21 (Q) 22 At least one substituted C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, and monovalent non-aromatic fused heterocyclic groups, and -Si(Q 31 )(Q 32 )(Q 33 )、-N(Q 31 )(Q 32 )、-B(Q 31 )(Q 32 )、-C(=O)(Q 31 )、-S(=O)2(Q 31 ) and -P(=O)(Q 31 )(Q 32 ), and Q1 to Q3, Q 11 To Q 13 Q 21 To Q 23 and Q 31 To Q 33 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C1-C 60 Heteroaryl groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

8. The organic light-emitting device as claimed in claim 7, wherein L 10 L 20 L 30 L 40 and L 50 Each is independently represented by one of equations 3-1 to 3-26: ， as well as in, In equations 3-1 to 3-26, Z 11 To Z 14 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, naphthyl groups, fluorenyl groups, spiro-difluorenyl groups, benzo[a]fluorenyl groups, dibenzo[a]fluorenyl groups, phenanthrene groups, anthracene groups, pyrene groups, pyridyl groups, pyrazinyl groups, pyrimidinyl groups, pyridazinyl groups, quinolinyl groups, isoquinolinyl groups, quinoxalinyl groups, quinazolinyl groups, carbazole groups, dibenzofuranyl groups, dibenzothiopheneyl groups, triazineyl groups, benzimidazolyl groups, phenanthrene-rholineyl groups, and -Si(Q) 31 (Q) 32 (Q) 33 ), Q 31 To Q 33 Each is independently selected from C1-C 10 Alkyl groups, C1-C 10 alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, and naphthyl groups, d3 is an integer from 0 to 3. d4 is an integer from 0 to 4. d5 is an integer from 0 to 5. d6 is an integer from 0 to 6. d8 is an integer from 0 to 8, and and Each represents a binding site with an adjacent atom.

9. The organic light-emitting device as claimed in claim 7, wherein R 10 R 20 R 30 R 40 R 50 R 60 R 70 and R 80 Each independently is: Hydrogen, deuterium, -F, -Cl, -Br, -I, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, tert-butyl group, vinyl group, propenyl group, butenyl group, methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, isobutoxy group, or tert-butoxy group; or A group represented by one of formulas 5-1 to 5-41 and 6-1 to 6-55, ,as well as in, In equations 5-1 to 5-41 and equations 6-1 to 6-55, Y 31 and Y 32 Each is independently O, S, C(Z) 34 (Z) 35 ), N(Z 34 ) or Si(Z 34 (Z) 35 ), Y 33 To Y 35 Each is independently a single bond, O, S, C (Z) 36 (Z) 37 ), N(Z 36 ) or Si(Z 36 (Z) 37 ), Z 31 To Z 37 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C2-C 20 alkenyl groups, C2-C 20 alkynyl group, C1-C 20 Alkoxy groups, phenyl groups, biphenyl groups, triphenyl groups, naphthyl groups, fluorenyl groups, spiro-difluorenyl groups, phenanthrene groups, anthracene groups, benzo[a]phenanthrene groups, pyridyl groups, pyrimidinyl groups, carbazole groups, and triazine groups. e2 is 1 or 2. e3 is an integer from 1 to 3. e4 is an integer from 1 to 4. e5 is an integer from 1 to 5. e6 is an integer from 1 to 6. e7 is an integer from 1 to 7. e9 is an integer from 1 to 9, and Indicates the binding site with adjacent atoms.

10. The organic light-emitting device of claim 1, wherein the first host compound is selected from compounds A-01 to A-21: 。 11. The organic light-emitting device of claim 1, wherein the second host compound and the third host compound are each independently selected from compounds represented by formulas 311-1 to 311-5: Formula 311-1 Formula 311-2 Formula 311-3 Formula 311-4 Formula 311-5 ,as well as in, In equations 311-1 to 311-5, Ar 301 Is it substituted or unsubstituted C5-C? 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups, xb11 is 1, 2, or 3. A 301 To A 304 Each group is independently selected from phenyl groups, naphthyl groups, phenanthrene groups, fluoranthene groups, benzo[a]phenanthrene groups, pyrene groups, phenanthrene groups, indene groups, fluorene groups, spiro-difluorene groups, benzo[a]fluorene groups, dibenzo[a]fluorene groups, indole groups, carbazole groups, benzo[a]carbazole groups, dibenzo[a]carbazole groups, furan groups, benzo[a]furan groups, dibenzo[a]furan groups, naphthuran groups, benzo[a]naphthuran groups, dinaphthuran groups, benzo[a]naphthuran groups, and dinaphthuran groups. X 301 is O, S, N[(L 304 ) xb4 -R 304 , C[(L 304 ) xb4 -R 304 [(L 305 ) xb5 -R 305 or Si[(L 304 ) xb4 -R 304 [(L 305 ) xb5 -R 305 , X 302 Y 301 and Y 302 Each is independently a single bond, O, S, N[(L 305 ) xb5 -R 305 ]、C[(L 304 ) xb4 -R 304 ][(L 305 ) xb5 -R 305 ]、Si[(L 304 ) xb4 -R 304 ][(L 305 ) xb5 -R 305 ] or S(=O)2, xb21 to xb24 are each independently 0, 1, or 2. L 301 To L 306 Each is independently selected from substituted or unsubstituted C3-C. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups. xb1 to xb5 are each an independent integer from 0 to 5. xb6 is an integer from 1 to 5. R 301 To R 305 Each group is independently selected from deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, substituted or unsubstituted C1-C. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) and -P(=O)(Q 301 (Q) 302 ), R 311 To R 314 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 20 Alkyl groups, C1-C 20 Alkoxy group, phenyl group, biphenyl group, terphenyl group, naphthyl group, -Si(Q) 301 (Q) 302 (Q) 303 -N(Q) 301 (Q) 302 -B(Q) 301 (Q) 302 -C(=O)(Q) 301 -S(=O)2(Q) 301 ) and -P(=O)(Q 301 (Q) 302 ),as well as Q 301 To Q 303 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 heteroaryl groups, C1-C 60 heteroaryloxy groups, C1-C 60 Heteroaryl thio groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

12. The organic light-emitting device of claim 1, wherein the third host compound is represented by formula 312-1, formula 312-2 or formula 313: Formula 312-1 Formula 312-2 Formula 313 Formula 313A ,as well as in, In Equations 312-1 and 312-2, X 321 To X 327 Each is independently N or C[(L 324 ) xb24 -R 324 ], xb21 to xb24 are each an independent integer from 0 to 5. L 321 To L 324 Each is independently selected from substituted or unsubstituted C3-C. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups. R 321 To R 324 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, substituted or unsubstituted C1-C. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 321 (Q) 322 (Q) 323 -N(Q) 321 (Q) 322 -B(Q) 321 (Q) 322 -C(=O)(Q) 321 -S(=O)2(Q) 321 ) and -P(=O)(Q 321 (Q) 322 ), R 321 To R 324 Two or more adjacent C3-C molecules are optionally linked together to form substituted or unsubstituted C3-C molecules. 60 The carbocyclic group is either substituted or unsubstituted C1-C. 60 Heterocyclic groups, Q 321 To Q 323 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 heteroaryl groups, C1-C 60 heteroaryloxy groups, C1-C 60 Heteroaryl thio groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups. In Equation 313, A 31 A 32 and A 34 Each is independently selected from C5-C 60 Carbocyclic groups and C1-C 30 Heterocyclic groups, A 33 It is a group represented by formula 313A. X 31 Selected from N[(L) 335 ) xb35 -(R 335 )]、O、S、Se、C[(L 335 ) xb35 -(R 335 )][(L 336 ) xb36 -(R 336 )] and Si[(L 335 ) xb35 -(R 335 )][(L 336 ) xb36 -(R 336 )], xb31 to xb36 are each an independent integer from 0 to 5. L 331 To L 336 Each is independently selected from substituted or unsubstituted C3-C. 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 arylene groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted divalent nonaromatic fused polycyclic groups, and substituted or unsubstituted divalent nonaromatic fused heterocyclic groups. R 331 To R 336 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amido group, hydrazine group, hydrazone group, substituted or unsubstituted C1-C. 60 Alkyl groups, substituted or unsubstituted C2-C 60 alkenyl groups, substituted or unsubstituted C2-C 60 alkynyl group, substituted or unsubstituted C1-C 60 alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl groups, substituted or unsubstituted C1-C 10 Heterocyclic alkenyl groups, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 aryl thioyl groups, substituted or unsubstituted C1-C 60 Heteroaryl groups, substituted or unsubstituted monovalent nonaromatic fused polycyclic groups, substituted or unsubstituted monovalent nonaromatic fused heterocyclic groups, -Si(Q 331 (Q) 332 (Q) 333 -N(Q) 331 (Q) 332 -B(Q) 331 (Q) 332 -C(=O)(Q) 331 -S(=O)2(Q) 331 ) and -P(=O)(Q 331 (Q) 332 ), xb42 to xb44 are each an independent integer from 0 to 10, and Q 331 To Q 333 Each group is independently selected from hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidine group, hydrazine group, hydrazone group, C1-C 60 Alkyl groups, C2-C 60 alkenyl groups, C2-C 60 alkynyl group, C1-C 60 alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocyclic alkyl groups, C3-C 10 cycloalkenyl groups, C1-C 10 Heterocyclic alkenyl groups, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 aryl thiol groups, C1-C 60 heteroaryl groups, C1-C 60 heteroaryloxy groups, C1-C 60 Heteroaryl thio groups, monovalent non-aromatic fused polycyclic groups, monovalent non-aromatic fused heterocyclic groups, biphenyl groups, and terphenyl groups.

13. The organic light-emitting device of claim 1, wherein the organic light-emitting device further includes a capping layer on the second electrode, and The covering layer has a refractive index of 1.6 or greater than 1.

6.

14. The organic light-emitting device of claim 1, wherein the dopant comprises a phosphorescent dopant compound, a fluorescent dopant compound, a delayed fluorescence dopant compound, or any combination thereof.

15. The organic light-emitting device of claim 1, wherein the emitting layer is designed to emit blue light having a maximum emission wavelength of 410 nm or greater and 490 nm or less.

16. The organic light-emitting device of claim 1, wherein the first electrode is an anode. The second electrode is the cathode. The organic layer further includes a hole transport region between the first electrode and the emitter layer and an electron transport region between the emitter layer and the second electrode. The hole transport region includes a hole injection layer, a hole transport layer, an emission assist layer, an electron blocking layer, or any combination thereof, and The electron transport region includes a buffer layer, a hole blocking layer, an electron control layer, an electron transport layer, an electron injection layer, or any combination thereof.

17. The organic light-emitting device of claim 16, wherein the electron transport region comprises a metal-containing material.

18. An electronic device, comprising the organic light-emitting device according to any one of claims 1 to 17.

19. The electronic device of claim 18, wherein the electronic device further comprises a sealing portion for sealing the organic light-emitting device, and The sealing part is a thin film encapsulation layer comprising at least one organic layer and / or at least one inorganic layer.

20. The electronic device of claim 18, wherein the electronic device further comprises a thin-film transistor. The thin-film transistor includes a source electrode and a drain electrode, and The first electrode of the organic light-emitting device is electrically connected to the source electrode or the drain electrode of the thin-film transistor.

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