Light-emitting device including condensed ring compound and electronic device including the same

Abstract

Provided are a light-emitting device including a fused ring compound and an electronic device including the light-emitting device. The light-emitting device includes a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode, wherein the intermediate layer further includes a hole transport region between the first electrode and the emissive layer, the hole transport region including a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof, and the emissive layer including at least one fused ring compound represented by Formula 1: Formula 1#imgabs0#Formula 201#imgabs1#Formula 202#imgabs2#Substituents are as defined in the detailed description.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2020-0062577, filed on May 25, 2020, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] One or more embodiments relate to a light-emitting device including a condensed-cyclic compound and an electronic device including the light-emitting device. Background Art

[0004] Organic light-emitting devices are self-emissive devices that have wide viewing angles, high contrast, and short response times and / or desirable (eg, excellent) characteristics in terms of brightness, driving voltage, and / or response speed compared to related art light-emitting devices.

[0005] An organic light-emitting device may include a first electrode on a substrate, and a hole transport region, an emissive layer, an electron transport region, and a second electrode stacked in sequence on the first electrode. Holes provided by the first electrode can move toward the emissive layer through the hole transport region, and electrons provided by the second electrode can move toward the emissive layer through the electron transport region. Carriers (such as holes and electrons) recombine in the emissive layer to produce excitons. These excitons transition from an excited state to a ground state, thereby generating light. Summary of the Invention

[0006] Aspects according to one or more embodiments relate to a light-emitting device including a condensed ring compound having desired (eg, excellent) light efficiency and high stability, and an electronic device including the same.

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

[0008] According to one or more embodiments, a light emitting device includes a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode.

[0009] wherein the intermediate layer further comprises a hole transport region between the first electrode and the emissive layer,

[0010] The hole transport region includes a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof, and

[0011] The emission layer includes at least one condensed ring compound represented by Formula 1:

[0012] Formula 1

[0013]

[0014] Formula 201

[0015]

[0016] Formula 202

[0017]

[0018] In formula 1,

[0019] X1 and X2 are each independently O or S,

[0020] Ring CY0 to Ring CY6 are each independently C5-C 30 Carbocyclic group or C1-C 30 A heterocyclic group, wherein at least one of ring CY3 and ring CY6 is not phenyl,

[0021] R0 to R6 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted by at least one R 10a Substituted C1-C 60 Heterocyclic group, unsubstituted or substituted by at least one R 10a Substituted C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C6-C 60 arylthio, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2),

[0022] a0 to a6 are each independently an integer selected from 0 to 20,

[0023] R 10a for:

[0024] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, or nitro;

[0025] Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof;

[0026] Each unsubstituted or substituted C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy or C6-C 60 Arylthio: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof; or

[0027] -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 ),and

[0028] Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; or each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group or C1-C 60 a heterocyclic group, and

[0029] Among them, in Equation 201 and Equation 202,

[0030] L 201 To L 204 are each independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0031] L 205 For *-O-*', *-S-*', *-N(Q 201 )-*', unsubstituted or replaced by at least one R 10a Substituted C1-C 20 Alkylene, unsubstituted or substituted with at least one R 10a Substituted C2-C 20 Alkenylene, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R10a Substituted C1-C 60 Heterocyclic groups,

[0032] xa1 to xa4 are each independently an integer selected from 0 to 5,

[0033] xa5 is an integer selected from 1 to 10,

[0034] R 201 to R 204 and Q 201 are each independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0035] R 201 and R 202 Optionally, through a single bond, unsubstituted or substituted by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 Polycyclic groups,

[0036] R 203 and R 204 Optionally, through a single bond, unsubstituted or substituted by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 Polycyclic groups,

[0037] na1 is an integer selected from 1 to 4, and * and *' each indicate a binding site with an adjacent atom.

[0038] According to one or more embodiments, a light emitting device includes a first electrode, a second electrode facing the first electrode, and an intermediate layer between the first electrode and the second electrode.

[0039] The light emitting device further includes a second covering layer outside the second electrode and having a refractive index equal to or greater than 1.6, and

[0040] The emission layer includes at least one condensed-cyclic compound represented by Formula 1.

[0041] According to one or more embodiments, the electronic device includes a thin film transistor in addition to the light emitting device, wherein the thin film transistor includes a source electrode and a drain electrode, and the first electrode of the light emitting device is electrically connected to the source electrode or the drain electrode of the thin film transistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The above and other aspects, features and enhancements of certain embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0043] Figure 1 is a schematic cross-sectional view of a light emitting device according to an embodiment;

[0044] Figure 2 is a schematic cross-sectional view of a light emitting device according to another embodiment; and

[0045] Figure 3 is a schematic cross-sectional view of a light emitting device according to another embodiment. DETAILED DESCRIPTION

[0046] Reference will now be made in more detail to embodiments, examples of which are shown in the accompanying drawings, wherein like reference numerals refer to like elements throughout. In this regard, the embodiments may have different forms and should not be construed as limited to the description set forth herein. Accordingly, the embodiments are described below solely with reference to the accompanying drawings to illustrate various aspects of this specification. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Throughout this 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.

[0047] According to an embodiment of the present disclosure, the fused ring compound is represented by Formula 1:

[0048] Formula 1

[0049]

[0050] In Formula 1, X1 and X2 may each independently be O or S.

[0051] For example, X1 may be O or S.

[0052] For example, X2 may be O or S.

[0053] In Formula 1, ring CY0 to ring CY6 can each independently be C5-C 30 Carbocyclic group or C1-C 30 A heterocyclic group, wherein at least one of ring CY3 and ring CY6 may not be a phenyl group.

[0054] In an embodiment, ring CY0 to ring CY6 may each independently be phenyl, naphthyl, anthracenyl, phenanthrenyl, triphenylenyl, pyrenyl, chrysene, cyclopentadienyl, 1,2,3,4-tetrahydronaphthyl, thienyl, furanyl, indolyl, benzoborol, benzophosphopentadienyl, indenyl, benzosilol, benzogermanyl, benzothienyl, benzoselenophene, benzofuranyl, carbazolyl, dibenzoborol, dibenzophosphopentadienyl, Dienyl, fluorenyl, dibenzosilyl, dibenzogermanyl, dibenzothiophene, dibenzoselenophene, dibenzofuranyl, dibenzothiophene 5-oxide, 9H-fluoren-9-one, dibenzothiophene 5,5-dioxide, azaindolyl, azabenzoborol, azabenzophosphol, azaindenyl, azabenzosilyl, azabenzogermanyl, azabenzothiophene, azabenzoselenophene , azabenzofuranyl, azacarbazolyl, azadibenzoborole, azadibenzophosphole, azafluorenyl, azadibenzosilyl, azadibenzogermanyl, azadibenzothiophene, azadibenzoselenophene, azadibenzofuranyl, azadibenzothiophene 5-oxide, aza-9H-fluoren-9-one, azadibenzothiophene 5,5-dioxide, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazine 1,2-Diazolyl, ...

[0055] For example, at least one of ring CY0 to ring CY2 may be a phenyl group.

[0056] In one or more embodiments, at least one of ring CY3 and ring CY6 may be a fluorenyl group, a carbazolyl group, a dibenzofuranyl group, or a dibenzothiophenyl group.

[0057] In one or more embodiments, in Formula 1, The group represented may be a group represented by any one of Formula CY3-1 to Formula CY3-3:

[0058]

[0059] In Formula CY3-1 to Formula CY3-3, X1, Ring CY1, Ring CY4, R1, R3, R4, a1 and a4 may be each independently the same as described in the present specification, * and *' each indicate a fusion (e.g., connection) site with Ring CY0 in Formula 1, X 31 Can be single bond, O, S, Se, C(R 31a )(R 31b )、Si(R 31a )(R 31b ) or N(R 31a ), X 32 Can be single bond, O, S, Se, C(R 32a )(R 32b )、Si(R 32a )(R 32b ) or N(R 32a ), X 31 and X 32 The two can be different single bonds at the same time, R 31a 、R 31b 、R 32a and R 32b may be each independently the same as described in conjunction with R3, and a36 may be an integer selected from 0 to 6.

[0060] For example, in Formula 1, The group represented by can be represented by any one of formulae CY3(1) to CY3(6):

[0061]

[0062] In Formula CY3(1) to Formula CY3(6), X1, Ring CY1, Ring CY4, R1, R3, R4, a1, and a4 may each independently be the same as described in the present specification, * and *' each indicate a fusion (e.g., connection) site with Ring CY0 in Formula 1, X 31 Can be O, S, Se, C (R 31a )(R 31b )、Si(R 31a )(R 31b ) or N(R 31a ), X 32 Can be O, S, Se, C (R 32a )(R 32b )、Si(R 32a )(R 32b ) or N(R 32a ), R 31a 、R 31b 、R 32a and R 32b may be each independently the same as described in conjunction with R3, and a36 may be an integer selected from 0 to 6.

[0063] In one or more embodiments, in Formula 1, The group represented may be a group represented by any one of Formula CY6-1 to Formula CY6-4:

[0064]

[0065] In Formula CY6-1 to Formula CY6-4, X2, Ring CY2, Ring CY5, R2, R5, R6, a2 and a5 may be each independently the same as described in the present specification, * and *' each indicate a fusion (e.g., connection) site with Ring CY0 in Formula 1, X 61 Can be single bond, O, S, Se, C(R 61a )(R 61b )、Si(R 61a )(R 61b ) or N(R 61a ), X 62 Can be single bond, O, S, Se, C(R 62a )(R 62b )、Si(R 62a )(R 62b ) or N(R 62a ), X 61 and X 62 The two can be different single bonds at the same time, R 61a 、R 61b 、R 62a and R 62b may be each independently the same as described in conjunction with R6, a64 may be an integer selected from 0 to 4, and a66 may be an integer selected from 0 to 6.

[0066] For example, in Formula 1, The group represented by can be represented by any one of formula CY6(1) to formula CY6(6) and CY6-4:

[0067]

[0068] In Formula CY6(1) to Formula CY6(6) and Formula CY6-4, X2, Ring CY2, Ring CY5, R2, R5, R6, a2 and a5 may be each independently the same as described in the present specification, * and *' each indicate a fusion (e.g., connection) site with Ring CY0 in Formula 1, X 61 Can be O, S, Se, C (R 61a )(R 61b )、Si(R 61a )(R 61b ) or N(R 61a ), X 62 Can be O, S, Se, C (R62a )(R 62b )、Si(R 62a )(R 62b ) or N(R 62a ), R 61a 、R 61b 、R 62a and R 62b may be each independently the same as described in conjunction with R6, a64 may be an integer selected from 0 to 4, and a66 may be an integer selected from 0 to 6.

[0069] In one or more embodiments, at least one of ring CY4 and ring CY5 may be a phenyl group.

[0070] In Formula 1, R0 to R6 can each independently be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted by at least one R 10a Substituted C1-C 60 Heterocyclic group, unsubstituted or substituted by at least one R 10a Substituted C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C6-C 60 Arylthio, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2). Here, R 10a and Q1 to Q3 may each independently be the same as described in this specification.

[0071] In an embodiment, R0 to R6 may each independently be:

[0072] hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro;

[0073] Each unsubstituted or substituted C1-C 20 Alkyl, C2-C 20 Alkenyl, C2-C20 Alkynyl or C1-C 20 Alkoxy: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, -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 ),-P(=O)(Q 31 )(Q 32 ) or any combination thereof;

[0074] each unsubstituted or substituted by cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysene, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindole yl, indolyl, indazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl or imidazopyrimidinyl:

[0075] Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C2-C 20 Alkenyl, C2-C 20 Alkynyl, C1-C 20Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysene, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indole, oxazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -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 ),-P(=O)(Q 31 )(Q 32 ) or any combination thereof; or

[0076] -B(Q1)(Q2), -P(Q1)(Q2) or -C(=O)(Q1).

[0077] In one or more embodiments, at least one of R0 to R6 may be hydrogen.

[0078] In one or more embodiments, at least one of R4 and R5 may be hydrogen.

[0079] In Formula 1, a0 to a6 may each independently be an integer selected from 0 to 20.

[0080] In an embodiment, a0 to a6 may each independently be an integer selected from 0 to 5.

[0081] In one or more embodiments, at least one of a0 to a2 may be 0.

[0082] In formula 1, A part of a group represented by Parts of the groups represented by (eg, corresponding parts) may be identical to each other. For example, ring CY3 and ring CY6 may be identical to each other, ring CY4 and ring CY5 may be identical to each other, and / or R3 and R6 may be identical to each other.

[0083] In an embodiment, loop CY3 and loop CY6 may be identical to each other.

[0084] In one or more embodiments, ring CY3 and ring CY6 may be identical to each other, and R3 and R6 may be identical to each other.

[0085] In one or more embodiments, loop CY4 and loop CY5 may be identical to each other.

[0086] In an embodiment, the fused ring compound represented by Formula 1 may be one of Compounds 1 to 56:

[0087]

[0088]

[0089] The condensed ring compound represented by Formula 1 may have a wide plate structure.

[0090] In the fused ring group, i) since at least one of the rings CY3 and CY6 is not a phenyl group, the fused ring group can have a wide plate-like structure due to the fused rings, and thus the surrounding of the boron atom can be strengthened. Accordingly, the trigonal planar structure of the boron atom can be maintained with structural rigidity (thereby reducing or preventing deterioration in which the structure becomes a tetrahedral structure when reacting with other nucleophiles). In addition, multiple resonance can be activated, the f-value can be increased, and ΔE ST Can be reduced, thereby improving light extraction efficiency. In addition, in the fused ring compound, ii) because the N atom is included in the five-ring structure, the single bond portion in the fused structure can be reduced, thereby increasing the stability of the material and obtaining the effect of extending the absorption band by reducing the Stokes shift. Therefore, the fused ring compound can be used as a high-efficiency delayed fluorescence luminescent material, and in this regard, an electronic device (e.g., an organic light-emitting device) including the fused ring compound can have a low driving voltage, a desired (e.g., excellent) light efficiency and a long life.

[0091] Those skilled in the art can recognize the synthesis method of the fused ring compound represented by Formula 1 by referring to the examples provided below.

[0092] At least one condensed-cyclic compound represented by Formula 1 may be utilized in a light-emitting device (eg, an organic light-emitting device).

[0093] According to another embodiment of the present disclosure, a light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an intermediate layer between the first electrode and the second electrode and including an emission layer, wherein the intermediate layer further includes a hole transport region located between the first electrode and the emission layer, the hole transport region includes a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof, and the emission layer includes at least one condensed ring compound represented by Formula 1:

[0094] Formula 201

[0095]

[0096] Formula 202

[0097]

[0098] In Equations 201 and 202,

[0099] L 201 To L 204 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0100] L 205 Can be *-O-*', *-S-*', *-N(Q 201 )-*', unsubstituted or replaced by at least one R 10a Substituted C1-C 20 Alkylene, unsubstituted or substituted with at least one R 10a Substituted C2-C 20 Alkenylene, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0101] xa1 to xa4 may each independently be an integer selected from 0 to 5,

[0102] xa5 may be an integer selected from 1 to 10,

[0103] R 201 to R 204 and Q 201 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0104] R 201 and R 202 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10aThe substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 Polycyclic groups,

[0105] R 203 and R 204 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 polycyclic groups, and

[0106] na1 may be an integer selected from 1 to 4.

[0107] In one or more embodiments,

[0108] The first electrode of the light emitting device may be an anode,

[0109] The second electrode of the light emitting device may be a cathode,

[0110] The intermediate layer may further include an electron transport region located between the emissive layer and the second electrode,

[0111] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof, and

[0112] 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.

[0113] In one or more embodiments, an intermediate layer (eg, an emission layer) of a light-emitting device may include a dopant and a host, and the host or the dopant may include a condensed ring compound.

[0114] The emitting layer may emit red, green, blue, and / or white light. For example, the emitting layer may emit blue light or blue-green light. For example, the blue light or blue-green light may have a maximum emission wavelength in the range of about 400 nm to about 500 nm.

[0115] For example, the emission layer may have a lowest excited triplet energy level equal to or greater than 2.4 eV and equal to or less than 3.1 eV.

[0116] The condensed ring compound included in the emission layer may serve as a delayed fluorescence dopant to emit delayed fluorescence from the emission layer.

[0117] In one or more embodiments, a light emitting device may include:

[0118] a first covering layer located outside the first electrode (e.g., on a side opposite to the second electrode);

[0119] a second covering layer located on the outer second electrode (eg, on the side opposite to the first electrode); or

[0120] a first covering layer and a second covering layer.

[0121] According to another embodiment of the present disclosure, a light emitting device includes: a first electrode, a second electrode facing the first electrode, and an intermediate layer located between the first electrode and the second electrode and including an emission layer.

[0122] The light emitting device may further include a second covering layer located outside the second electrode and having a refractive index equal to or greater than 1.6, and

[0123] The emission layer includes at least one condensed-cyclic compound represented by Formula 1.

[0124] In an embodiment, an encapsulation portion (eg, an encapsulation layer) may be located on the second cover layer. The encapsulation portion may be located on the light emitting device to protect the light emitting device from moisture and / or oxygen.

[0125] In an embodiment, the packaging portion may include:

[0126] Including silicon nitride (SiN x ), silicon oxide (SiO x ), inorganic films of indium tin oxide, indium zinc oxide or any combination thereof;

[0127] An organic film comprising polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resin, epoxy resin, or any combination thereof; or

[0128] A combination of inorganic and organic membranes.

[0129] According to another embodiment of the present disclosure, an electronic device includes a light emitting device and may further include a thin film transistor.

[0130] For example, the electronic device may further include a thin film transistor including a source electrode and a drain electrode, and the first electrode of the light emitting device may be electrically connected to the source electrode or the drain electrode.

[0131] In an embodiment, the electronic device may further include a color filter, a color conversion layer, a touch screen layer, a polarization layer, or any combination thereof. For example, the electronic device may be a tablet electronic device, but the embodiments of the present disclosure are not limited thereto.

[0132] More detailed descriptions of the electronic device may be the same as described above.

[0133] In the present specification, the expression “(the intermediate layer) includes a condensed ring compound” may be interpreted as meaning “(the intermediate layer) may include one condensed ring compound of Formula 1 or two different condensed ring compounds of Formula 1”.

[0134] For example, the intermediate layer may include only Compound 1 as a condensed ring compound. In an embodiment, Compound 1 may be included in the emission layer of the light-emitting device. In one or more embodiments, the intermediate layer may include Compound 1 and Compound 2 as condensed ring compounds. In this regard, Compound 1 and Compound 2 may be present in the same layer (for example, Compound 1 and Compound 2 may both be present in the emission layer) or in different layers (for example, Compound 1 may be present in the emission layer and Compound 2 may be present in the electron transport region).

[0135] The term "intermediate layer" as used herein refers to a single layer and / or all layers located between a first electrode and a second electrode of a light emitting device.

[0136] [ Figure 1 Description]

[0137] Figure 1 1 is a schematic cross-sectional view of a light emitting device 10 according to an embodiment of the present invention. The light emitting device 10 includes a first electrode 110 , an intermediate layer 130 , and a second electrode 150 .

[0138] The following will be combined Figure 1 The structure of the light emitting device 10 and a method of manufacturing the light emitting device 10 according to the embodiment are described.

[0139] [First electrode 110]

[0140] exist Figure 1 In the embodiment, the substrate may be located below the first electrode 110 or above the second electrode 150. The substrate may be a glass substrate or a plastic substrate. The substrate may be a flexible substrate. In one or more embodiments, the substrate may include a plastic having suitable (e.g., excellent) heat resistance and durability, such as polyimide, polyethylene terephthalate (PET), polycarbonate, polyethylene naphthalate, polyarylate (PAR), polyetherimide, or a combination thereof.

[0141] For example, the first electrode 110 may be formed by depositing or sputtering a material for forming the first electrode 110 on a substrate. When the first electrode 110 is an anode, a high work function material that can appropriately (e.g., easily) inject holes may be used as the material for forming the first electrode 110.

[0142] The first electrode 110 may be a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. When the first electrode 110 is a transmissive electrode, the material used to form the first electrode 110 may 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-transmissive 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 may be used as the material used to form the first electrode 110.

[0143] The first electrode 110 may have a single-layer structure consisting of a single layer or a multi-layer structure including a plurality of layers. In an embodiment, the first electrode 110 may have a triple-layer structure of ITO / Ag / ITO.

[0144] [Middle layer 130]

[0145] The intermediate layer 130 is located on the first electrode 110. The intermediate layer 130 includes an emission layer.

[0146] The intermediate layer 130 may further include a hole transport region between the first electrode 110 and the emission layer, and an electron transport region between the emission layer and the second electrode 150 .

[0147] In addition to various appropriate organic materials, the intermediate layer 130 may further include metal-containing compounds (such as organometallic compounds) and / or inorganic materials (such as quantum dots), etc.

[0148] In one or more embodiments, the intermediate layer 130 may include: i) two or more emission units sequentially stacked between the first electrode 110 and the second electrode 150; and ii) a charge generation layer located between two adjacent emission units among the two or more emission units. When the intermediate layer 130 includes two or more emission units and a charge generation layer as described above, the light-emitting device 10 may be a tandem light-emitting device.

[0149] [Hole Transport Region in Intermediate Layer 130]

[0150] The hole transport region may have: i) a single-layer structure (e.g., consisting of a single layer) including a single material (e.g., consisting of a single material), ii) a single-layer structure (e.g., consisting of a single layer) including a plurality of different materials (e.g., consisting of a plurality of different materials), or iii) a multilayer structure including a plurality of layers containing different materials.

[0151] The hole transport region may include a hole injection layer, a hole transport layer, an emission assisting layer, an electron blocking layer, or any combination thereof.

[0152] For example, the hole transport region may have a multi-layer structure, which includes a hole injection layer / hole transport layer structure, a hole injection layer / hole transport layer / emission assisting layer structure, a hole injection layer / emission assisting layer structure, a hole transport layer / emission assisting layer structure or a hole injection layer / hole transport layer / emission assisting layer structure, wherein, in each structure, the constituent layers are stacked in sequence on the first electrode 110 in the order stated respectively.

[0153] The hole transport region may include the compound represented by Formula 201, the compound represented by Formula 202, or any combination thereof as described above:

[0154] Formula 201

[0155]

[0156] Formula 202

[0157]

[0158] In Equations 201 and 202,

[0159] L 201 To L 204 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0160] L 205 Can be *-O-*', *-S-*', *-N(Q 201 )-*', unsubstituted or replaced by at least one R 10a Substituted C1-C 20 Alkylene, unsubstituted or substituted with at least one R 10a Substituted C2-C 20 Alkenylene, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0161] xa1 to xa4 may each independently be an integer selected from 0 to 5,

[0162] xa5 may be an integer selected from 1 to 10,

[0163] R 201 to R 204 and Q 201 may be independently unsubstituted or substituted with at least one R10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0164] R 201 and R 202 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a (e.g., carbazolyl, etc.) substituted C8-C 60 Polycyclic groups (for example, see compound HT16 below),

[0165] R 203 and R 204 may be optionally substituted by a single bond, unsubstituted or by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 polycyclic groups, and

[0166] na1 may be an integer selected from 1 to 4.

[0167] For example, Formula 201 and Formula 202 may each include at least one of the groups represented by Formula CY201 to Formula CY217:

[0168]

[0169] In formulas CY201 to CY217, R 10b and R 10c Can be combined with R 10a Same as described, CY 201 To Ring CY 204 Can be independently C3-C 20 Carbocyclic group or C1-C 20 heterocyclic group, and at least one hydrogen in Formula CY201 to Formula CY217 may be unsubstituted or replaced by at least one R 10a replace.

[0170] In an embodiment, ring CY in Formula CY201 to Formula CY217 201 To Ring CY 204 Each independently may be phenyl, naphthyl, phenanthryl or anthracenyl.

[0171] In one or more embodiments, Formula 201 and Formula 202 may each include at least one of the groups represented by Formulas CY201 to CY203.

[0172] In one or more embodiments, Formula 201 may include at least one group represented by Formulas CY201 to CY203 and at least one group represented by Formulas CY204 to CY217.

[0173] In one or more embodiments, in Formula 201, xa1 may be 1, R 201 may be a group represented by any one of formulae CY201 to CY203, xa2 may be 0, and R 202 It may be a group represented by any one of formulae CY204 to CY207.

[0174] In one or more embodiments, each of Formula 201 and Formula 202 may not include any of the groups represented by Formulas CY201 to CY203.

[0175] In one or more embodiments, each of Formula 201 and Formula 202 may not include any of the groups represented by Formulas CY201 to CY203, and may include at least one group represented by Formulas CY204 to CY217.

[0176] In one or more embodiments, each of Formula 201 and Formula 202 may not include any of the groups represented by Formulas CY201 to CY217.

[0177] For example, the hole transport region may include one 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), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), 9-(4-(tert-butyl)phenyl)-3,6-bis(triphenylsilyl)-9H-carbazole (CzSi), or any combination thereof:

[0178]

[0179]

[0180]

[0181]

[0182] The thickness of the hole transport region can be about to about For example, about to about 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 may be about to about For example, about to about and the thickness of the hole transport layer can be in the range of about to about For example, about to about When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer are within these ranges, satisfactory hole transport characteristics can be obtained without a significant increase in driving voltage.

[0183] The emission assisting layer can increase light emission efficiency by compensating the optical resonance distance according to the wavelength of light emitted by the emission layer, and the electron blocking layer can block the flow of electrons from the electron transport region. The emission assisting layer and the electron blocking layer can include materials as described above.

[0184] [p-dopant]

[0185] In addition to these materials, the hole transport region may further include a charge generating material for improving conductive properties. The charge generating material may be uniformly or non-uniformly dispersed in the hole transport region (eg, in the form of a single layer composed of the charge generating material).

[0186] For example, the charge generating material may be a p-dopant.

[0187] In an embodiment, the p-dopant may have a lowest unoccupied molecular orbital (LUMO) energy level equal to or less than −3.5 eV.

[0188] In an embodiment, the p-dopant may include a quinone derivative, a cyano group-containing compound, a compound containing elements EL1 and EL2 (to be described in more detail below), or any combination thereof.

[0189] Non-limiting examples of quinone derivatives are TCNQ and F4-TCNQ.

[0190] Non-limiting examples of cyano group-containing compounds are HAT-CN and compounds represented by Formula 221:

[0191]

[0192] Formula 221

[0193]

[0194] In formula 221,

[0195] R 221 to R 223 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 a heterocyclic group, and

[0196] R 221 to R 223 At least one of them may be each independently C3-C 60 Carbocyclic group or C1-C 60 Heterocyclic group: cyano; -F; -Cl; -Br; -I; C1-C1-C1-substituted by cyano, -F, -Cl, -Br, -I or any combination thereof 20 or any combination thereof.

[0197] Regarding the compound containing elements EL1 and EL2, element EL1 may be a metal, a metalloid, or a combination thereof, and element EL2 may be a nonmetal, a metalloid, or a combination thereof.

[0198] Non-limiting examples of metals are: alkali metals (e.g., lithium (Li), sodium (Na), potassium (K), rubidium (Rb) and / or cesium (Cs), etc.); alkaline earth metals (e.g., beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr) and / or 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 ( The present invention also includes the following metals: (a) tantalum (tb), tantalum (tm), thulium (Tm), ytterbium (Yb), thulium (Tm), ytterbium (Yb), yttrium (Yb), thulium (Tm), ytterbium (Yb), yttrium (Yb), yttrium (Lu), yttrium (Yb ...

[0199] Non-limiting examples of metalloids are silicon (Si), antimony (Sb), and tellurium (Te).

[0200] Non-limiting examples of non-metals are oxygen (O) and halogens (eg, F, Cl, Br, I, etc.).

[0201] For example, the compound containing elements EL1 and EL2 may be a metal oxide, a metal halide (e.g., a metal fluoride, a metal chloride, a metal bromide and / or a metal iodide), a metalloid halide (e.g., a metalloid fluoride, a metalloid chloride, a metalloid bromide and / or a metalloid iodide), a metal telluride, or any combination thereof.

[0202] Non-limiting examples of metal oxides are tungsten oxide (e.g., WO, W2O3, WO2, WO3, and / or W2O5), vanadium oxide (e.g., VO, V2O3, VO2, and / or V2O5), molybdenum oxide (e.g., MoO, Mo2O3, MoO2, MoO3, and / or Mo2O5), and rhenium oxide (e.g., ReO3).

[0203] Non-limiting examples of metal halides are alkali metal halides, alkaline earth metal halides, transition metal halides, late transition metal halides, and lanthanide metal halides.

[0204] Non-limiting examples of alkali metal halides are LiF, NaF, KF, RbF, CsF, LiCl, NaCl, KCl, RbCl, CsCl, LiBr, NaBr, KBr, RbBr, CsBr, LiI, NaI, KI, RbI, and CsI.

[0205] Non-limiting examples of alkaline earth halides are BeF2, MgF2, CaF2, SrF2, BaF2, BeCl2, MgCl2, CaCl2, SrCl2, BaCl2, BeBr2, MgBr2, CaBr2, SrBr2, BaBr2, BeI2, MgI2, CaI2, SrI2, and BaI2.

[0206] Non-limiting examples of transition metal halides are titanium halides (e.g., TiF4, TiCl4, TiBr4, and / or TiI4), zirconium halides (e.g., ZrF4, ZrCl4, ZrBr4, and / or ZrI4), hafnium halides (e.g., HfF4, HfCl4, HfBr4, and / or HfI4), vanadium halides (e.g., VF3, VCl3, VBr3, and / or VI3), niobium halides (e.g., NbF3, NbCl3, NbBr3, and / or NbI3), tantalum halides (e.g., TaF3, TaCl3, Ta Br3 and / or TaI3), chromium halides (e.g., CrF3, CrCl3, CrBr3 and / or CrI3), molybdenum halides (e.g., MoF3, MoCl3, MoBr3 and / or MoI3), tungsten halides (e.g., WF3, WCl3, WBr3 and / or WI3), manganese halides (e.g., MnF2, MnCl2, MnBr2 and / or MnI2), technetium halides (e.g., TcF2, TcCl2, TcBr2 and / or TcI2), rhenium halides (e.g., ReF2, ReCl2, ReBr2, and / or ReI2), iron halides (e.g., FeF2, FeCl2, FeBr2, and / or FeI2), ruthenium halides (e.g., RuF2, RuCl2, RuBr2, and / or RuI2), osmium halides (e.g., OsF2, OsCl2, OsBr2, and / or OsI2), cobalt halides (e.g., CoF2, CoCl2, CoBr2, and / or CoI2), rhodium halides (e.g., RhF2, RhCl2, RhBr2, and / or RhI2), iridium halides (e.g., IrF2, IrCl2, IrBr2, and / or 2 and / or IrI2), nickel halides (e.g., NiF2, NiCl2, NiBr2 and / or NiI2), palladium halides (e.g., PdF2, PdCl2, PdBr2 and / or PdI2), platinum halides (e.g., PtF2, PtCl2, PtBr2 and / or PtI2), copper halides (e.g., CuF, CuCl, CuBr and / or CuI), silver halides (e.g., AgF, AgCl, AgBr and / or AgI), and gold halides (e.g., AuF, AuCl, AuBr and / or AuI).

[0207] Non-limiting examples of late transition metal halides are zinc halides (eg, ZnF2, ZnCl2, ZnBr2, and / or ZnI2), indium halides (eg, InI3), and tin halides (eg, SnI2).

[0208] Non-limiting examples of lanthanide metal halides are YbF, YbF2, YbF3, SmF3, YbCl, YbCl2, YbCl3, SmCl3, YbBr, YbBr2, YbBr3, SmBr3, YbI, YbI2, YbI3, and SmI3.

[0209] An example of a metalloid halide is antimony halide (eg, SbCl 5 ).

[0210] Non-limiting examples of metal tellurides are alkali metal tellurides (e.g., Li2Te, Na2Te, K2Te, Rb2Te and / or Cs2Te), alkaline earth metal tellurides (e.g., BeTe, MgTe, CaTe, SrTe and / or BaTe), transition metal tellurides (e.g., TiTe2, ZrTe2, HfTe2, V2Te3, Nb2Te3, Ta2Te3, Cr2Te3, Mo2Te3, W2Te3, MnTe, TcTe, ReTe, FeTe, RuTe, OsTe, CoTe, RhTe, IrTe, NiTe, PdTe, PtTe, Cu2Te, CuTe, Ag2Te, AgTe and / or Au2Te), late transition metal tellurides (e.g., ZnTe), and lanthanide metal tellurides (e.g., LaTe, CeTe, PrTe, NdTe, PmTe, EuTe, GdTe, TbTe, DyTe, HoTe, ErTe, TmTe, YbTe and / or LuTe).

[0211] [Emitting Layer in Intermediate Layer 130]

[0212] When the light-emitting device 10 is a full-color light-emitting device, the emission layer may be patterned into a red emission layer, a green emission layer, and / or a blue emission layer according to the sub-pixel. In an embodiment, the emission layer may have a stacked structure of two or more layers of a red emission layer, a green emission layer, and a blue emission layer, wherein the two or more layers are in contact with each other or separated from each other. In one or more embodiments, the emission layer may include two or more materials of a red light-emitting material, a green light-emitting material, and a blue light-emitting material, wherein the two or more materials are mixed with each other in a single layer to emit white light.

[0213] The emissive layer may include a host and a dopant. The dopant may include a phosphorescent dopant, a fluorescent dopant, or any combination thereof.

[0214] The amount of the dopant in the emission layer may be in the range of about 0.01 parts by weight to about 15 parts by weight based on 100 parts by weight of the host.

[0215] In one or more embodiments, the emissive layer may include quantum dots.

[0216] In one embodiment, the emissive layer may include a delayed fluorescent material. The delayed fluorescent material may be used as a host or a dopant in the emissive layer.

[0217] The thickness of the emission layer can be about to about For example, about to about When the thickness of the emission layer is within these ranges, appropriate (eg, excellent) light emission characteristics may be obtained without a significant increase in driving voltage.

[0218] [main body]

[0219] In an embodiment, a host may include a compound represented by Formula 301:

[0220] Formula 301

[0221] [Ar 301 ] xb11 -[(L 301 ) xb1 -R 301 ] xb21

[0222] Wherein, in formula 301,

[0223] Ar 301 and L 301 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0224] xb11 can be 1, 2 or 3,

[0225] xb1 may be an integer selected from 0 to 5,

[0226] R 301 It can be hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60Carbocyclic group, unsubstituted or substituted by at least one R 10a Substituted C1-C 60 Heterocyclic 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 ) or -P(=O)(Q 301 )(Q 302 ),

[0227] xb21 may be an integer selected from 1 to 5, and

[0228] Q 301 To Q 303 Each may independently be the same as described in conjunction with Q1.

[0229] In one or more embodiments, when xb11 in Formula 301 is 2 or greater, two or more Ar 301 can be connected to each other via a single bond.

[0230] In one or more embodiments, the host may include a compound represented by Formula 301-1, a compound represented by Formula 301-2, or any combination of embodiments:

[0231] Formula 301-1

[0232]

[0233] Formula 301-2

[0234]

[0235] In Formula 301-1 and Formula 301-2,

[0236] Ring A 301 To Ring A 304 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0237] X 301 Can be O, S, N-[(L 304 ) xb4 -R 304 ]、C(R304 )(R 305 ) or Si(R 304 )(R 305 ),

[0238] xb22 and xb23 can each independently be 0, 1 or 2,

[0239] L 301 , xb1 and R 301 can be independently the same as described in this specification,

[0240] L 302 To L 304 Can be combined with L independently 301 Same as described,

[0241] xb2 to xb4 may each independently be the same as described in conjunction with xb1, and

[0242] R 302 to R 305 and R 311 to R 314 Can be combined with R 301 Same as described.

[0243] In one or more embodiments, the host may include an alkaline earth metal complex. In an embodiment, the host may be a Be complex (eg, compound H55), a Mg complex, a Zn complex, or any combination thereof.

[0244] In an embodiment, the host may include one of compounds H1 to H124, 9,10-di(2-naphthyl)anthracene (ADN), 2-methyl-9,10-bis(naphthalene-2-yl)anthracene (MADN), 9,10-di-(2-naphthyl)-2-tert-butyl-anthracene (TBADN), 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP), 1,3-di-9-carbazolylbenzene (mCP), 1,3,5-tris(carbazol-9-yl)benzene (TCP), or any combination thereof, but embodiments of the present disclosure are not limited thereto.

[0245]

[0246]

[0247]

[0248]

[0249]

[0250]

[0251] [Delayed fluorescence material]

[0252] The emissive layer may include a delayed fluorescent material.

[0253] The delayed fluorescent material used herein may be selected from any compound capable of emitting delayed fluorescence based on a delayed fluorescence emission mechanism.

[0254] The delayed fluorescent material included in the emission layer may serve as a host or a dopant depending on the kind (eg, type) of other materials included in the emission layer.

[0255] In an embodiment, the difference between the triplet energy level (eV) of the delayed fluorescent material and the singlet energy level (eV) of the delayed fluorescent material may 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) of the delayed fluorescent material and the singlet energy level (eV) of the delayed fluorescent material is within the above range, upconversion of the delayed fluorescent material from the triplet state to the singlet state may effectively occur, and thus, the luminous efficiency of the light-emitting device 10 may be improved.

[0256] In embodiments, the delayed fluorescent material may include i) at least one electron donor (eg, a π-electron-rich C3-C 60 Cyclic groups, such as carbazolyl) and at least one electron acceptor (e.g., sulfoxide, cyano and / or C1-C1 containing π electron-depleted nitrogen) 60 cyclic groups), and / or ii) materials including C8-C 60 Polycyclic materials, in C8-C 60 Two or more cyclic groups in the polycyclic group share boron (B) and are fused to each other.

[0257] The delayed fluorescent material may include at least one of compounds DF1 to DF9:

[0258]

[0259] [Quantum dot]

[0260] The emissive layer may include quantum dots.

[0261] The term "quantum dot" as used herein refers to a crystal of a semiconductor compound, and may include any material capable of emitting light of various appropriate emission wavelengths depending on the size of the crystal.

[0262] For example, the diameter of the quantum dots may be in the range of about 1 nm to about 10 nm.

[0263] Quantum dots can be synthesized by a wet chemical process, a metal organic chemical vapor deposition process, a molecular beam epitaxy process, or a process similar to these processes.

[0264] A wet chemical process is a method of mixing a solvent and a precursor material and then growing quantum dot particle crystals. As the crystals grow, the organic solvent acts as a dispersant that naturally coordinates on the surface of the quantum dot crystals and controls crystal growth. Therefore, by using processes that are easy to perform at low cost compared to vapor deposition processes (such as metal organic chemical vapor deposition (MOCVD) processes and / or molecular beam epitaxy (MBE) processes), the growth of quantum dot particles can be controlled.

[0265] The quantum dots may include: Group II-VI semiconductor compounds; Group III-V semiconductor compounds; Group III-VI semiconductor compounds; Group I-III-VI semiconductor compounds; Group IV-VI semiconductor compounds; Group IV elements or compounds; or any combination thereof.

[0266] Non-limiting examples of II-VI semiconductor compounds are 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, CdZ nSe, 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.

[0267] Non-limiting examples of Group III-V semiconductor compounds include binary compounds such as GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, and / or InSb; ternary compounds such as GaNPs, GaNAs, GaNSb, GaPAs, GaPSb, AlNPs, AlNAs, AlNSb, AlPAs, AlPSb, InGaP, InNPs, InAlP, InNAs, InNSb, InPAs, and / or InPSb; quaternary compounds such as GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNPs, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNPs, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and / or GaAlNPs; or any combination thereof. The Group III-V semiconductor compounds may further include a Group II element. Non-limiting examples of Group III-V semiconductor compounds further including a Group II element are InZnP, InGaZnP, and InAlZnP.

[0268] Non-limiting examples of Group III-VI semiconductor compounds are: binary compounds such as GaS, GaSe, Ga2Se3, GaTe, InS, In2S3, InSe, In2Se3 and / or InTe; ternary compounds such as InGaS3 and / or InGaSe3; or any combination thereof.

[0269] Non-limiting examples of Group I-III-VI semiconductor compounds are ternary compounds such as AgInS, AgInS2, CuInS, CuInS2, CuGaO2, AgGaO2 and / or AgAlO2.

[0270] Non-limiting examples of Group IV-VI semiconductor compounds are: 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.

[0271] In an embodiment, the Group IV element or compound may include: a single element compound, such as Si and / or Ge; a binary compound, such as SiC and / or SiGe; or any combination thereof.

[0272] Each element included in the multi-element compound such as the binary compound, the ternary compound, and the quaternary compound may be present in the particle at a uniform concentration or a non-uniform concentration.

[0273] In one embodiment, the quantum dot may have a single structure or a core-shell dual structure, the single structure having a uniform concentration of each element included in the corresponding quantum dot. For example, the material included in the core may be different from the material included in the shell.

[0274] The shell of a quantum dot can serve as a protective layer for maintaining semiconductor properties by preventing or reducing chemical degradation of the core, and / or can serve as a charging layer for imparting electrophoretic properties to the quantum dot. The shell can be a single layer or multiple layers. The interface between the core and the shell can have a concentration gradient, where the concentration of the element present in the shell decreases toward the center.

[0275] Non-limiting examples of the shell of the quantum dot are metal and / or non-metal oxides, semiconductor compounds, or any combination thereof. Non-limiting examples of metal and / or non-metal oxides are binary compounds such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CuO, FeO, Fe2O3, Fe3O4, CoO, Co3O4, and / or NiO; ternary compounds such as MgAl2O4, CoFe2O4, NiFe2O4, and / or CoMn2O4; or any combination thereof. Non-limiting examples of semiconductor compounds are, as described herein, Group III-VI semiconductor compounds; Group II-VI semiconductor compounds; Group III-V semiconductor compounds; Group III-VI semiconductor compounds; Group I-III-VI semiconductor compounds; Group IV-VI semiconductor compounds; or any combination thereof. For example, the semiconductor compound may include CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, AlSb, or any combination thereof.

[0276] The full width at half maximum (FWHM) of the emission wavelength spectrum of the quantum dots can be equal to or less than about 45 nm, for example, equal to or less than about 40 nm, or equal to or less than about 30 nm. When the FWHM of the emission wavelength spectrum of the quantum dots is within the above range, color purity and / or color reproducibility can be improved. In addition, light emitted by such quantum dots is omnidirectional (e.g., in all directions). Therefore, a wide viewing angle can be increased.

[0277] Additionally, for example, the quantum dots may be spherical nanoparticles, pyramidal nanoparticles, multi-arm nanoparticles, cubic nanoparticles, nanotube particles, nanowire particles, nanofiber particles, or nanoplate particles.

[0278] By adjusting the size of the quantum dots, the band gap can also be adjusted, thereby obtaining light of various appropriate wavelengths in the quantum dot emission layer. Therefore, by using quantum dots of different sizes, a light-emitting device that emits light of various appropriate wavelengths can be implemented. In an embodiment, the size of the quantum dots can be selected to emit red light, green light, and / or blue light. In addition, the size of the quantum dots can be configured (e.g., selected) to allow a combination of various appropriate colors of light so as to emit white light.

[0279] [Electron Transport Region in Intermediate Layer 130]

[0280] The electron transport region may have: i) a single-layer structure (e.g., consisting of a single layer) including a single material (e.g., consisting of a single material), ii) a single-layer structure (e.g., consisting of a single layer) including a plurality of different materials (e.g., consisting of a plurality of different materials), or iii) a multilayer structure including a plurality of layers containing different materials.

[0281] 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.

[0282] 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 in each structure, the layers are stacked on the emission layer in the order stated.

[0283] The electron transport region (e.g., a buffer layer, a hole blocking layer, an electron control layer, or an electron transport layer in the electron transport region) may include a metal-free compound including at least one C1-C1-H2O-containing π-electron-depleted nitrogen. 60 Cyclic group.

[0284] In an embodiment, the electron transport region may include a compound represented by Formula 601:

[0285] Formula 601

[0286] [Ar 601 ] xe11 -[(L 601 ) xe1 -R 601 ] xe21

[0287] Wherein, in formula 601,

[0288] Ar 601 and L 601 may be independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups,

[0289] xe11 can be 1, 2 or 3,

[0290] xe1 can be 0, 1, 2, 3, 4 or 5,

[0291] R 601 may be unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted by at least one R 10a Substituted C1-C 60 Heterocyclic group, -Si(Q 601 )(Q 602 )(Q 603 ),-C(=O)(Q 601 )、-S(=O)2(Q 601 ) or -P(=O)(Q 601 )(Q 602 ),

[0292] Q 601 To Q 603 can be the same as described in conjunction with Q1,

[0293] xe21 can be 1, 2, 3, 4, or 5, and

[0294] Ar 601 、L 601 and R 601 At least one of them may be independently unsubstituted or replaced by at least one R 10a Substituted C1-C containing π-electron-depleted nitrogen 60 Cyclic group.

[0295] In one or more embodiments, when xe11 in Formula 601 is 2 or greater, two or more Ar 601 can be connected to each other via a single bond.

[0296] In one or more embodiments, Ar in Formula 601 601 The anthracenyl group may be substituted or unsubstituted.

[0297] In an embodiment, the electron transport region may include a compound represented by Formula 601-1:

[0298] Formula 601-1

[0299]

[0300] In formula 601-1,

[0301] X 614 Can be N or C(R 614 ), X 615 Can be N or C(R 615 ), X 616 Can be N or C(R 616 ), and X 614 To X 616 At least one of may be N,

[0302] L 611 To L 613 Can be combined with L independently 601 Same as described,

[0303] xe611 to xe613 can each independently be the same as described in conjunction with xe1,

[0304] R 611 to R 613 Can be combined with R 601 Same as described, and

[0305] R 614 to R 616 can be independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C1-C 20 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic group.

[0306] For example, xe1 and xe611 to xe613 in Formula 601 and Formula 601-1 may each independently be 0, 1, or 2.

[0307] The electron transport region may include one 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, NTAZ, diphenyl(4-(triphenylsilyl)phenyl)phosphine oxide (TSPO1), 1,3,5-tris(1-phenyl-1H-benzo[d]imidazol-2-yl)benzene (TPBI), or any combination thereof:

[0308]

[0309]

[0310]

[0311] The thickness of the electron transport region can be about to about For example, about to about 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 each of the buffer layer, the hole blocking layer, or the electron control layer may be in the range of about to about For example, about to about and the thickness of the electron transport layer can be in the range of about to about For example, about to about When the thickness of the buffer layer, the hole blocking layer, the electron control layer and / or the electron transport layer is within these ranges, satisfactory electron transport characteristics can be obtained without a significant increase in driving voltage.

[0312] In addition to the materials described above, the electron transport region (eg, an electron transport layer in the electron transport region) may further include a metal-containing material.

[0313] The metal-containing material may include an alkali metal complex, an alkaline earth metal complex, or any combination thereof. The metal ion of the alkali metal complex may be Li ion, Na ion, K ion, Rb ion, and / or Cs ion, and the metal ion of the alkaline earth metal complex may be Be ion, Mg ion, Ca ion, Sr ion, and / or Ba ion. The ligand coordinated with the metal ion of the alkali metal complex and / or alkaline earth metal complex may be hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene, or any combination thereof.

[0314] In an embodiment, the metal-containing material may include a Li complex. For example, the Li complex may include compound ET-D1 (LiQ) or ET-D2:

[0315]

[0316] The electron transport region may include an electron injection layer that facilitates injection of electrons from the second electrode 150. The electron injection layer may directly contact the second electrode 150.

[0317] The electron injection layer may have: i) a single-layer structure composed of a single layer consisting of a single material, ii) a single-layer structure composed of a single layer consisting of multiple different materials, or iii) a multi-layer structure including multiple layers, the multiple layers including different materials.

[0318] The electron injection layer may include an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal compound, an alkaline earth metal compound, a rare earth metal compound, an alkali metal complex, an alkaline earth metal complex, a rare earth metal complex, or any combination thereof.

[0319] The alkali metal may include Li, Na, K, Rb, Cs, or any combination thereof. The alkaline earth metal may include Mg, Ca, Sr, Ba, or any combination thereof. The rare earth metal may include Sc, Y, Ce, Tb, Yb, Gd, or any combination thereof.

[0320] The alkali metal compound, the alkaline earth metal compound, and the rare earth metal compound may be oxides and / or halides (e.g., fluorides, chlorides, bromides, and / or iodides), tellurides, or any combination thereof of the alkali metal, the alkaline earth metal, and the rare earth metal.

[0321] The alkali metal compound may be an alkali metal oxide (such as Li2O, Cs2O, and / or K2O), an alkali metal halide (such as LiF, NaF, CsF, KF, LiI, NaI, CsI, and / or KI), or any combination thereof. The alkaline earth metal compound may include an alkaline earth metal oxide, such as BaO, SrO, CaO, Ba x Sr 1-x O (x is a real number satisfying the condition 0 < x < 1) and / or Ba x Ca 1-x O (x is a real number satisfying the condition 0 < x < 1). The rare earth metal compound may include YbF3, ScF3, Sc2O3, Y2O3, Ce2O3, GdF3, TbF3, YbI3, ScI3, TbI3, or any combination thereof. In an embodiment, the rare earth metal compound may include lanthanide metal tellurides. Non-limiting 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, and Lu2Te3.

[0322] The alkali metal complex, alkaline earth metal complex and rare earth metal complex may include i) one of the metal ions of an alkali metal, an alkaline earth metal and a rare earth metal and ii) a ligand attached to the metal ion, for example, hydroxyquinoline, hydroxyisoquinoline, hydroxybenzoquinoline, hydroxyacridine, hydroxyphenanthridine, hydroxyphenyloxazole, hydroxyphenylthiazole, hydroxyphenyloxadiazole, hydroxyphenylthiadiazole, hydroxyphenylpyridine, hydroxyphenylbenzimidazole, hydroxyphenylbenzothiazole, bipyridine, phenanthroline, cyclopentadiene or any combination thereof.

[0323] The electron injection layer may include (e.g., consist of) 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, or may further include an organic material (e.g., a compound represented by Formula 601).

[0324] In an embodiment, the electron injection layer may include (e.g., consisting 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, an alkaline earth metal, a rare earth metal, or any combination thereof. In an embodiment, the electron injection layer may be a KI:Yb co-deposition layer or a RbI:Yb co-deposition layer.

[0325] When the electron injection layer further includes an organic material, 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 may be uniformly or non-uniformly dispersed in the matrix including the organic material.

[0326] The thickness of the electron injection layer can be about to about For example, about to about When the thickness of the electron injection layer is within the range described above, satisfactory electron injection characteristics can be obtained without a significant increase in driving voltage.

[0327] [Second electrode 150]

[0328] The second electrode 150 may be located on the intermediate layer 130 having such a structure. The second electrode 150 may be a cathode, which is an electron injection electrode, and as a material for forming the second electrode 150, metals, alloys, conductive compounds, or any combination thereof, each having a low work function, may be used.

[0329] The second electrode 150 may include 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, or a combination thereof. The second electrode 150 may be a transmissive electrode, a semi-transmissive electrode, or a reflective electrode.

[0330] The second electrode 150 may have a single-layer structure or a multi-layer structure including two or more layers.

[0331] [Overlay]

[0332] The first cover layer may be located on the outer side of the first electrode 110 (e.g., on the side opposite to the second electrode), and / or the second cover layer may be located on the outer side of the second electrode 150 (e.g., on the side opposite to the first electrode). For example, the light-emitting device 10 may have a structure in which the first cover layer, the first electrode 110, the intermediate layer 130, and the second electrode 150 are stacked in sequence in the stated order; a structure in which the first electrode 110, the intermediate layer 130, the second electrode 150, and the second cover layer are stacked in sequence in the stated order; or a structure in which the first cover layer, the first electrode 110, the intermediate layer 130, the second electrode 150, and the second cover layer are stacked in sequence in the stated order.

[0333] Light generated in the emission layer of the intermediate layer 130 of the light-emitting device 10 can be extracted toward the outside (e.g., emitted) through the first electrode 110 and the first covering layer, and each of the first electrode 110 and the first covering layer may include a semi-transmissive material (e.g., a semi-transmissive electrode or layer) or a transmissive material (e.g., a transmissive electrode or layer), or light generated in the emission layer of the intermediate layer 130 of the light-emitting device 10 can be extracted toward the outside (e.g., emitted) through the second electrode 150 and the second covering layer, and each of the second electrode 150 and the second covering layer may include a semi-transmissive material (e.g., a semi-transmissive electrode or layer) or a transmissive material (e.g., a transmissive electrode or layer).

[0334] The first cover layer and the second cover layer can increase the external luminous efficiency according to the principle of constructive interference, and accordingly, can increase the light extraction efficiency of the light emitting device 10, thereby also improving the luminous efficiency of the light emitting device 10.

[0335] The first cover layer and the second cover layer may each include a material having a refractive index equal to or greater than 1.6 (at 589 nm).

[0336] The first covering layer and the second covering layer may each independently be an organic covering layer including an organic material, an inorganic covering layer including an inorganic material, or a composite covering layer including an organic material and an inorganic material.

[0337] At least one selected from the first cover layer and the second cover layer may each independently include a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or a combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine-containing compound may optionally be substituted with a substituent containing O, N, S, Se, Si, F, Cl, Br, I, or any combination thereof. In an embodiment, at least one of the first cover layer and the second cover layer may each independently include an amine-containing compound.

[0338] In an embodiment, at least one of the first capping layer and the second capping layer may each independently include the compound represented by Formula 201, the compound represented by Formula 202, or any combination thereof.

[0339] In one or more embodiments, at least one of the first cover layer and the second cover layer may each independently include a compound selected from compounds HT28 to HT33, compounds CP1 to CP6, β-NPB, or any combination thereof:

[0340]

[0341] [Electronic equipment]

[0342] The light emitting device may be included in various suitable electronic devices. In an embodiment, the electronic device including the light emitting device may be a light emitting device and / or an authentication device, etc.

[0343] In addition to the light-emitting device, an electronic device (e.g., a 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 light emitted from the light-emitting device. In embodiments, the light emitted from the light-emitting device may be blue light or white light. The light-emitting device may be the same as described above. In embodiments, the color conversion layer may include quantum dots. For example, the quantum dots may be the same as described above.

[0344] The electronic device may include a first substrate, a plurality of sub-pixel regions, a color filter may include a plurality of color filter regions respectively corresponding to the plurality of sub-pixel regions, and a color conversion layer may include a plurality of color conversion regions respectively corresponding to the sub-pixel regions.

[0345] A pixel defining film may be located between the plurality of sub-pixel regions to define each of the sub-pixel regions.

[0346] The color filter may further include a plurality of color filter regions and a light blocking pattern between adjacent ones of the plurality of color filter regions, and the color conversion layer may further include a plurality of color conversion regions and a light blocking pattern between adjacent ones of the plurality of color conversion regions.

[0347] The plurality of color filter regions (or color conversion regions) may include a first region emitting a first color of light, a second region emitting a second color of light, and / or a third region emitting a third color of light. The first, second, and / or third color of light may have different maximum emission wavelengths. For example, the first color of light may be red, the second color of light may be green, and the third color of light may be blue. For example, the plurality of color filter regions (or color conversion regions) may include quantum dots. For example, the first region may include red quantum dots (e.g., quantum dots that emit red light), the second region may include green quantum dots (e.g., quantum dots that emit green light), and the third region may not include quantum dots. The quantum dots may be the same as those described herein. The first, second, and / or third regions may further include scattering bodies (e.g., diffusers).

[0348] For example, the light emitting device may emit a first light, the first region may absorb the first light to emit a first first color light, the second region may absorb the first light to emit a second first color light, and the third region may absorb the first light to emit a third first color light. In this regard, the first first color light, the second first color light, and the third first color light may have different maximum emission wavelengths. In one embodiment, the first light may be blue light, the first first color light may be red light, the second first color light may be green light, and the third first color light may be blue light.

[0349] In addition to the light emitting device 10 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 activation layer (eg, an active layer), wherein the source electrode or the drain electrode may be electrically connected to the first electrode or the second electrode of the light emitting device.

[0350] The thin film transistor may further include a gate electrode and / or a gate insulating layer, etc.

[0351] The active layer may include crystalline silicon, amorphous silicon, an organic semiconductor, and / or an oxide semiconductor, among others.

[0352] The electronic device may further include a sealing portion (e.g., a sealing layer) for sealing the light-emitting device. The sealing portion may be located between the color filter and the light-emitting device and / or between the color conversion layer and the light-emitting device. The sealing portion allows light to be extracted (e.g., emitted) from the light-emitting device 10 to the outside while simultaneously or simultaneously preventing or substantially preventing external air and moisture from penetrating into the light-emitting device 10. The sealing portion may be a sealing substrate including a transparent glass substrate or a plastic substrate. The sealing portion may be a thin film encapsulation layer including at least one of an organic layer and an inorganic layer. When the sealing portion is a thin film encapsulation layer, the electronic device may be flexible.

[0353] In addition to the color filter and / or color conversion layer, various suitable functional layers may be further positioned on the sealing portion depending on the intended use of the electronic device. The functional layers may include a touch screen layer and / or a polarizing layer, among others. The touch screen layer may be a pressure-sensitive touch screen layer, a capacitive touch screen layer, and / or an infrared touch screen layer. The authentication device may be, for example, a biometric authentication device that authenticates an individual using biometric information from a biometric body (e.g., a fingertip and / or pupil).

[0354] In addition to the light emitting device, the authentication device may further include a biometric information collector.

[0355] The electronic device can be applied to various appropriate displays, light sources, lighting, personal computers (e.g., mobile personal computers), mobile phones, digital cameras, electronic notepads, electronic dictionaries, electronic game consoles, medical tools (e.g., electronic thermometers, blood pressure monitors, blood glucose meters, pulse measuring devices, pulse wave measuring devices, electrocardiogram displays, ultrasound diagnostic devices and / or endoscope displays), fish finders, various appropriate measuring tools, instruments (e.g., instruments for vehicles, aircraft and ships) and / or projectors, etc.

[0356] [ Figure 2 and Figure 3 Description]

[0357] Figure 2 is a schematic cross-sectional view showing a light emitting device according to another embodiment of the present disclosure.

[0358] Figure 2 The light emitting apparatus includes a substrate 100, a thin film transistor (TFT), a light emitting device, and an encapsulation portion 300 that seals the light emitting device.

[0359] The substrate 100 may be a flexible substrate, a glass substrate, or a metal substrate. The buffer layer 210 may be located on the substrate 100. The buffer layer 210 may prevent or substantially prevent impurities from penetrating through the substrate 100 and may provide a flat surface on the substrate 100.

[0360] The TFT may be positioned on the buffer layer 210. The TFT may include an activation layer (eg, active layer) 220, a gate electrode 240, a source electrode 260, and a drain electrode 270.

[0361] The activation layer 220 may include an inorganic semiconductor (such as silicon or polysilicon), an organic semiconductor, or an oxide semiconductor, and may include a source region, a drain region, and a channel region.

[0362] A gate insulating film 230 for insulating the activation layer 220 from the gate electrode 240 may be located on the activation layer 220 , and the gate electrode 240 may be located on the gate insulating film 230 .

[0363] An interlayer insulating film 250 may be located on the gate electrode 240 . The interlayer 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 .

[0364] The source electrode 260 and the drain electrode 270 may be located on the interlayer insulating film 250. The interlayer insulating film 250 and the gate insulating film 230 may be formed to expose the source region and the drain region of the activation layer 220, and the source electrode 260 and the drain electrode 270 may be located to contact the exposed portions of the source region and the drain region of the activation layer 220.

[0365] The TFT may be electrically connected to the light-emitting device to drive the light-emitting device and may be covered by a passivation layer 280. The passivation layer 280 may include an inorganic insulating film, an organic insulating film, or a combination thereof. The light-emitting device may be provided on the passivation layer 280. The light-emitting device includes a first electrode 110, an intermediate layer 130, and a second electrode 150.

[0366] The first electrode 110 may be positioned on the passivation layer 280. The passivation layer 280 may expose a portion of the drain electrode 270 without completely covering the drain electrode 270, and the first electrode 110 may be connected to the exposed portion of the drain electrode 270.

[0367] A pixel-defining layer 290 comprising an insulating material may be positioned on the first electrode 110. The pixel-defining layer 290 may expose a certain area of the first electrode 110, and the intermediate layer 130 may be formed in the exposed area of the first electrode 110. The pixel-defining layer 290 may be a polyimide-based organic film or a polyacrylic-based organic film. In one embodiment, at least one layer or multiple layers of the intermediate layer 130 may extend to the upper portion of the pixel-defining layer 290 and may be in the form of a common layer.

[0368] The second electrode 150 may be positioned on the intermediate layer 130, and a capping layer 170 may be additionally formed on the second electrode 150. The capping layer 170 may be formed to cover the second electrode 150.

[0369] The encapsulation portion 300 may be located on the cover layer 170. The encapsulation portion 300 may be located on the light emitting device to serve as a layer that protects the light emitting device from moisture and / or oxygen. The encapsulation portion 300 may include: an inorganic film (including silicon nitride (SiN x ), silicon oxide (SiO x ), indium tin oxide, indium zinc oxide or a combination thereof); an organic film (including polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resin (e.g., polymethyl methacrylate and / or polyacrylic acid), epoxy resin (e.g., aliphatic glycidyl ether (AGE)) or a combination thereof); or a combination of an inorganic film and an organic film.

[0370] Figure 3 is a schematic cross-sectional view showing a light emitting device according to another embodiment of the present disclosure.

[0371] Figure 3 Light-emitting devices and Figure 2 The light emitting device is the same as that of FIG, except that the light blocking pattern 500 and the functional region 400 are additionally located 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. Figure 3 The light-emitting device in the light-emitting apparatus may be a series light-emitting device.

[0372] [Preparation method]

[0373] The layer constituting the hole transport region, the light-emitting layer, and the layer constituting the electron transport region can be formed in a certain region by utilizing one or more appropriate methods selected from the following: vacuum deposition, spin coating, casting, Langmuir-Brockett (LB) deposition, inkjet printing, laser printing, and laser-induced thermal imaging.

[0374] When the layer constituting the hole transport region, the light emitting layer, and the layer constituting the electron transport region are formed by vacuum deposition, the deposition can be performed at a deposition temperature of about 100° C. to about 500° C., a ... -8 About 10 -3 Torr vacuum and about to about The deposition rate is carried out at .

[0375] [Definition of terms]

[0376] As used herein, the term "C3-C 60 A "carbocyclic group" refers to a cyclic group consisting only of carbon as a ring atom and having 3 to 60 carbon atoms, preferably C5-C 30Carbocyclic group or C5-C 60 Carbocyclic groups, and as used herein, the term "C1-C 60 The "heterocyclic group" refers to a cyclic group having 1 to 60 carbon atoms and further including heteroatoms as ring atoms in addition to carbon, preferably C1-C 30 Heterocyclic group. C3-C 60 Carbocyclic groups and C1-C 60 The heterocyclic groups may each be a monocyclic group consisting of one ring or a group in which two or more rings are fused to each other. 60 The number of ring-forming atoms of the heterocyclic group can be 3 to 61.

[0377] As used herein, the term "cyclic group" includes C3-C 60 Carbocyclic groups and C1-C 60 Heterocyclic group.

[0378] As used herein, the term "π-electron-rich C3-C 60 The term "cyclic group" refers to a cyclic group having 1 to 60 carbon atoms and not including *-N=*' as a ring-forming part, and the term "C1-C1 containing a π-electron-deficient nitrogen" as used herein 60 The term "cyclic group" refers to a heterocyclic group having 1 to 60 carbon atoms and further including *-N=*' as a ring-forming portion.

[0379] For example,

[0380] C3-C 60 The carbocyclic group may be i) a group T1 or ii) a fused ring group in which two or more groups T1 are fused to each other (e.g., cyclopentadienyl, adamantyl, norbornyl, phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, phenanthrenyl, hexacenyl, pentacenyl, rubenyl, coronenyl, ovalenyl, indenyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, indenophenanthrenyl and / or indenoanthryl),

[0381] C1-C 60The heterocyclic group may be i) a group T2, ii) a fused ring group in which two or more groups T2 are fused to each other, or iii) a fused ring group in which at least one group T2 and at least one group T1 are fused to each other (e.g., pyrrolyl, thienyl, furanyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzosilolyl, benzo Thienyl, benzofuranyl, carbazolyl, dibenzosilyl, dibenzothiophenyl, dibenzofuranyl, indenylcarbazolyl, indolecarbazolyl, benzofurancarbazolyl, benzothiophenecarbazolyl, benzosilylcarbazolyl, benzoindolecarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothiophenyl, benzonaphthosilyl, benzofurandibenzoyl furyl, benzofuranodibenzothiophene, benzothienodibenzothiophene, pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl , benzoquinolinyl, benzoisoquinolinyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzosilacyclopentadienyl, azadibenzothiophenyl and / or azadibenzofuranyl),

[0382] π-electron-rich C3-C 60 The cyclic group may be i) a group T1, ii) a fused ring group in which two or more groups T1 are fused to each other, iii) a group T3, iv) a fused ring group in which two or more groups T3 are fused to each other, or v) a fused ring group in which at least one group T3 and at least one group T1 are fused to each other (e.g., C3-C 60 carbocyclic group, pyrrolyl, thienyl, furyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzosilolyl, benzothienyl, benzofuranyl, carbazolyl, dibenzosilolyl, dibenzothienyl, dibenzofuranyl, indenocarbazolyl, indolocarbazolyl, benzofurocarbazolyl, benzothienocarbazolyl, benzosilolyl, benzoindolcarbazolyl, benzocarbazolyl, benzonaphthofuranyl, benzonaphthothienyl, benzonaphthosilolyl, benzofuranodibenzofuranyl, benzofuranodibenzothienyl and / or benzothienodibenzothienyl),

[0383] C1-C containing π-electron-deficient nitrogen 60The cyclic group may be i) a group T4, ii) a fused ring group in which two or more groups T4 are fused to each other, iii) a fused ring group in which at least one group T4 and at least one group T1 are fused to each other, iv) a fused ring group in which at least one group T4 and at least one group T3 are fused to each other, or v) a fused ring group in which at least one group T4, at least one group T1 and at least one group T3 are fused to each other (e.g., pyrazolyl, imidazolyl, triazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, benzopyrazolyl, benzothiazolyl ... oxazolyl, benzoxazolyl, benzisoxazolyl, benzothiazolyl, benzisothiazolyl, pyridinyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, isoquinolyl, benzoquinolyl, benzoisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, phenanthrolinyl, cinnolinyl, phthalazinyl, naphthyridinyl, imidazopyridinyl, imidazopyrimidinyl, imidazotriazinyl, imidazopyrazinyl, imidazopyridazinyl, azacarbazolyl, azafluorenyl, azadibenzosilacyclopentadienyl, azadibenzothiophenyl and / or azadibenzofuranyl),

[0384] The radical T1 can be cyclopropane, cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclobutenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cyclohexadienyl, cycloheptenyl, adamantyl, norbornane (or bicyclo[2.2.1]heptane), norbornenyl, bicyclo[1.1.1]pentane, bicyclo[2.1.1]hexane, bicyclo[2.2.2]octane or phenyl,

[0385] The group T2 can be furyl, thienyl, 1H-pyrrolyl, silacyclopentadienyl, borocyclopentadienyl, 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azasilolyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl or tetrazinyl,

[0386] The group T3 may be a furyl group, a thienyl group, a 1H-pyrrolyl group, a silacyclopentadienyl group or a borocyclopentadienyl group, and

[0387] The group T4 can be 2H-pyrrolyl, 3H-pyrrolyl, imidazolyl, pyrazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl, thiadiazolyl, azasilacyclopentadienyl, azaborolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl or tetrazinyl.

[0388] According to the structure of the formula described by the corresponding terms, such as the terms "cyclic group", "C3-C 60Carbocyclic group", "C1-C 60 Heterocyclic groups", "π-electron-rich C3-C 60 Cyclic group" or "C1-C 60 The term "cyclic group" each refers to a monovalent group or a polyvalent group (e.g., a divalent group, a trivalent group, and / or a tetravalent group, etc.) fused to (e.g., bonded together with) a cyclic group. For example, "phenyl" may be benzo, phenyl, and / or phenylene, etc., which can be easily understood by those skilled in the art based on the structure of the formula including "phenyl".

[0389] In an embodiment, the monovalent C3-C 60 Carbocyclic groups and monovalent C1-C 60 Non-limiting examples of heterocyclic groups are C3-C 10 Cycloalkyl, C1-C 10 Heterocycloalkyl, C3-C 10 Cycloalkenyl, C1-C 10 Heterocycloalkenyl, C6-C 60 Aryl, C1-C 60 heteroaryl, monovalent non-aromatic fused polycyclic group and monovalent non-aromatic fused heteropolycyclic group, and divalent C3-C 60 Carbocyclic groups and divalent C1-C 60 Non-limiting examples of heterocyclic groups are C3-C 10 Cycloalkylene, C1-C 10 Heterocycloalkylene, C3-C 10 Cycloalkenylene, C1-C 10 Heterocycloalkenylene, C6-C 60 Arylene, C1-C 60 heteroarylene group, a divalent non-aromatic fused polycyclic group, and a divalent non-aromatic fused heteropolycyclic group.

[0390] As used herein, the term "C1-C 60 "Alkyl" refers to a linear or branched aliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, preferably C1-C 20 Alkyl, and non-limiting examples thereof are methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl, 3-pentyl, sec-isopentyl, n-hexyl, isohexyl, sec-hexyl, tert-hexyl, n-heptyl, isoheptyl, sec-heptyl, tert-heptyl, n-octyl, isooctyl, sec-octyl, tert-octyl, n-nonyl, isononyl, sec-nonyl, tert-nonyl, n-decyl, isodecyl, sec-decyl, and tert-decyl. As used herein, the term “C1- ... 60 "Alkylene" refers to a C1-C 60 Alkyl groups have the same structure as divalent groups, preferably C1-C 20 Alkylene or C1-C5 alkylene.

[0391] As used herein, the term "C2-C 60 "Alkenyl" refers to a C2-C 60 A monovalent hydrocarbon group having at least one carbon-carbon double bond in the middle or at the end (e.g., end) of the alkyl group, preferably a C2-C 20 The term "C2-C4-alkenyl" as used herein is a non-limiting example of which includes vinyl, propenyl, and butenyl. 60 "Alkenylene" refers to a C2-C 60 Alkenyl has a divalent group with the same structure, preferably C2-C 20 Alkenylene or C2-C5 alkenylene.

[0392] As used herein, the term "C2-C 60 "Alkynyl" refers to a C2-C 60 A monovalent hydrocarbon group having at least one carbon-carbon triple bond in the middle or at the end (e.g., end) of the alkyl group, preferably a C2-C 20 Alkynyl, and non-limiting examples thereof include ethynyl and propynyl. As used herein, the term "C2-C 60 "Alkynylidene" refers to a C2-C 60 Alkynyl groups are divalent groups with the same structure.

[0393] As used herein, the term "C1-C 60 "Alkoxy" refers to 101 (where A 101 C1-C 60 A monovalent group represented by an alkyl group, preferably a C1-C 20 Alkoxy, and non-limiting examples thereof include methoxy, ethoxy, and isopropoxy.

[0394] As used herein, the term "C3-C 10 The term "cycloalkyl" as used herein refers to a monovalent saturated hydrocarbon cyclic group having 3 to 10 carbon atoms, and non-limiting examples thereof include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl (or bicyclo[2.2.1]heptyl), bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, and bicyclo[2.2.2]octyl. As used herein, the term "C3-C 10 "Cycloalkylene" refers to a C3-C 10 The cycloalkyl group has a divalent group of the same structure.

[0395] As used herein, the term "C1-C 10The term "heterocycloalkyl" as used herein refers to a monovalent cyclic group further including at least one heteroatom as a ring-forming atom in addition to 1 to 10 carbon atoms, and non-limiting examples thereof are 1,2,3,4-oxatriazolidinyl, tetrahydrofuranyl, and tetrahydrothienyl. 10 "Heterocycloalkylene" refers to a C1-C 10 The heterocycloalkyl group has a divalent group of the same structure.

[0396] As used herein, the term "C3-C 10 "Cycloalkenyl" refers to a monovalent monocyclic group having 3 to 10 carbon atoms and at least one carbon-carbon double bond in its ring and having no aromaticity, and non-limiting examples thereof include cyclopentenyl, cyclohexenyl, and cycloheptenyl. As used herein, the term "C3-C 10 "Cycloalkenylene" refers to a C3-C 10 The cycloalkenyl group is a divalent group having the same structure.

[0397] As used herein, the term "C1-C 10 "Heterocycloalkenyl" refers to a monovalent cyclic group having at least one heteroatom and at least one double bond in addition to 1 to 10 carbon atoms in its ring structure. 10 Non-limiting examples of heterocycloalkenyl groups include 4,5-dihydro-1,2,3,4-oxatriazolyl, 2,3-dihydrofuranyl, and 2,3-dihydrothienyl. As used herein, the term "C1-C 10 "Heterocycloalkenylene" refers to a C1-C 10 The heterocycloalkenyl group has a divalent group of the same structure.

[0398] As used herein, the term "C6-C 60 "Aryl" refers to a monovalent group having a carbocyclic aromatic system (having 6 to 60 carbon atoms), and the term "C6-C 60 "Arylene" refers to a divalent group having a carbocyclic aromatic system (having 6 to 60 carbon atoms). 60 Non-limiting examples of aryl groups are phenyl, pentalenyl, naphthyl, azulenyl, indacenyl, acenaphthenyl, phenalenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylene, pyrenyl, 1,2-triphenylenyl, perylenyl, pentaphenanthrenyl, heptalenyl, tetracenyl, pyrenyl, hexacenyl, pentacenyl, rubenyl, corundum, and ovalenyl. 60 Aryl and C6-C 60 When the arylene groups each include two or more rings, the two or more rings may be fused to each other.

[0399] As used herein, the term "C1-C 60"Heteroaryl" refers to a monovalent group having a heterocyclic aromatic system which, in addition to 1 to 60 carbon atoms, has at least one heteroatom as a ring-forming atom. As used herein, the term "C1-C 60 "Heteroarylene" refers to a divalent group having a heterocyclic aromatic system which has at least one heteroatom as a ring atom in addition to 1 to 60 carbon atoms. 60 Non-limiting examples of heteroaryl groups are pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, quinolyl, benzoquinolyl, isoquinolyl, benzoisoquinolyl, quinoxalinyl, benzoquinoxalinyl, quinazolinyl, benzoquinazolinyl, cinnolinyl, phenanthrolinyl, phthalazinyl, carbazolyl, dibenzofuranyl, dibenzothienofuranyl, and naphthyridinyl. 60 Heteroaryl and C1-C 60 When the heteroarylene groups each include two or more rings, the two or more rings may be fused to each other.

[0400] As used herein, the term "monovalent non-aromatic fused polycyclic group" refers to a monovalent group having two or more rings fused to each other, only carbon atoms (e.g., 8 to 60 carbon atoms) as ring atoms, and no aromaticity (e.g., the entire molecular structure is not aromatic) in its entire molecular structure. Non-limiting examples of monovalent non-aromatic fused polycyclic groups are indenyl, fluorenyl, spiro-bifluorenyl, benzofluorenyl, indenophenanthryl, adamantyl, and indenoanthryl. As used herein, the term "divalent non-aromatic fused polycyclic group" refers to a divalent group having the same structure as the monovalent non-aromatic fused polycyclic group.

[0401] The term "monovalent non-aromatic fused heteropolycyclic group" as used herein refers to a monovalent group having two or more rings fused to each other, having at least one heteroatom as a ring-constituting atom in addition to carbon atoms (e.g., having 1 to 60 carbon atoms), and having no aromaticity in its entire molecular structure (e.g., the entire molecular structure is not aromatic). Non-limiting examples of monovalent non-aromatic fused heteropolycyclic groups are pyrrolyl, thienyl, furanyl, indolyl, benzindolyl, naphthoindolyl, isoindolyl, benzisoindolyl, naphthoisoindolyl, benzosilolyl, benzothienyl, benzofuranyl, 9H-xanthenyl, dibenzosilolyl, dibenzothienyl, azacarbazolyl, azafluorenyl, azadibenzosilolyl, azadibenzothienyl, azadibenzofuranyl, pyrazolyl, imidazolyl, triazolyl, tetrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, oxadiazolyl, thiadiazolyl, benzo The term "divalent non-aromatic fused heteropolycyclic group" as used herein refers to a divalent group having the same structure as a monovalent non-aromatic fused heteropolycyclic group.

[0402] As used herein, the term "C6-C 60 "Aryloxy" refers to a group consisting of -OA 102 (where A 102 C6-C 60 aryl) and the term "C6-C 60 "Arylthio" refers to -SA 103 (where A 103 C6-C 60 A monovalent group represented by an aryl group.

[0403] As used herein, the term "R 10a " can be:

[0404] deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, or nitro;

[0405] Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof;

[0406] Each unsubstituted or substituted C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy or C6-C 60 Arylthio: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof; or

[0407] -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 ).

[0408] In this manual, Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each of them can be independently: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; or each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group or C1-C 60 Heterocyclic group.

[0409] As used herein, the term "heteroatom" refers to any atom other than a carbon atom. Non-limiting examples of heteroatoms are O, S, N, P, Si, B, Ge, Se, and any combination thereof.

[0410] As used herein, the term "Ph" refers to a phenyl group, as used herein, the term "Me" refers to a methyl group, as used herein, the term "Et" refers to an ethyl group, as used herein, the term "tert-Bu" or "Bu" refers to an ethyl group. t ” refers to a tert-butyl group, and the term “OMe” as used herein refers to a methoxy group.

[0411] As used herein, the term "biphenyl" refers to a "phenyl group substituted by a phenyl group". In other words, a "biphenyl group" is a group having C6-C 60 A phenyl group substituted with an aryl group as a substituent.

[0412] As used herein, the term "terphenyl" refers to a "phenyl group substituted by a biphenyl group". In other words, a "terphenyl" is a group having a C6-C 60 Aryl-substituted C6-C 60 A phenyl group substituted with an aryl group as a substituent.

[0413] Unless otherwise defined, * and *' as used herein each refer to a binding site to an adjacent atom in the corresponding formula.

[0414] Hereinafter, the compound according to the embodiment and the light-emitting device according to the embodiment will be described in more detail with reference to Synthesis Examples and Examples. The phrase "using B instead of A" used in describing Synthesis Examples means using B instead of A in the same molar equivalent.

[0415] [Example]

[0416] Synthesis Example 1: Synthesis of Compound 1

[0417]

[0418] Synthetic intermediate 1-1

[0419] 5H-Benzofuran [3,2-c] carbazole (1 eq), 2-bromo-1,3-difluorobenzene (1.5 eq) and K 3 PO 4 (2 eq) were dissolved in DMF, and the mixed solution was stirred at a temperature of 160° C. for 12 hours. After cooling, the solvent was removed therefrom under reduced pressure, and the resulting product was washed three times with ethyl acetate and water, and the organic layer obtained by the extraction process was dried using MgSO 4 and dried under reduced pressure. Then, the resulting product was subjected to column chromatography using MC and n-hexane to obtain Intermediate 1-1. (Yield: 55%)

[0420] Synthetic intermediate 1-2

[0421] Resorcinol (1 eq), intermediate 1-1 (2.1 eq) and K 3 PO 4 (3 eq) were dissolved in DMF, and the mixed solution was stirred at 160° C. for 12 hours. After cooling, the solvent was removed therefrom under reduced pressure, and the resulting product was washed three times with ethyl acetate and water, and the organic layer obtained by the extraction process was dried using MgSO 4 and dried under reduced pressure. Then, the resulting product was subjected to column chromatography using MC and n-hexane to obtain intermediate 1-2. (Yield: 52%)

[0422] Synthesis of compound 1

[0423] Intermediate 1-2 (1 eq) was dissolved in o-xylene, and then the mixed solution was cooled to a temperature of 0° C. in a nitrogen atmosphere. n-BuLi (4 eq) was slowly injected therein, and the reaction solution was stirred for 2 hours after the reaction temperature was raised to 70° C. Then, the reaction solution was stirred for another 2 hours after the reaction temperature was raised to 120° C. After the temperature of the reactor was cooled to 0° C., BBr3 (5 eq) was slowly injected therein. After completion of the injection, the reaction solution was stirred for 1 hour. After the temperature of the reactor was cooled to 0° C., triethylamine (6 eq) was injected therein, and the reaction solution was stirred for another 12 hours after the temperature was raised to 140° C. After cooling, triethylamine was slowly dripped into the flask containing the reaction product to terminate the reaction. Then, ethanol was added to the reaction product for precipitation, so as to obtain a solid product by filtration. The solid product thus obtained was subjected to column chromatography, so as to obtain compound 1. (yield: 6%)

[0424] Synthesis Example 2: Synthesis of Compound 3

[0425]

[0426] Synthetic intermediate 3-1

[0427] Intermediate 3-1 was synthesized in the same manner as that used to prepare Intermediate 1-1, except that 12-phenyl-5,12-dihydroindolo[3,2-a]carbazole was used instead of 5H-benzofuro[3,2-c]carbazole. (Yield: 62%)

[0428] Synthetic intermediate 3-2

[0429] Intermediate 3-2 was synthesized in the same manner as used to prepare Intermediate 1-2, except that Intermediate 3-1 was used instead of Intermediate 1-1. (Yield: 55%)

[0430] Synthesis of compound 3

[0431] Compound 3 was synthesized in the same manner as used to prepare compound 1, except that intermediate 3-2 was used instead of intermediate 1-2. (Yield: 5%)

[0432] Synthesis Example 3: Synthesis of Compound 6

[0433]

[0434] Synthetic intermediate 6-1

[0435] Intermediate 6-1 was synthesized in the same manner as used to prepare Intermediate 1-1, except that 8H-benzo[4,5]thieno[2,3-c]carbazole was used instead of 5H-benzofuro[3,2-c]carbazole. (Yield: 58%)

[0436] Synthetic intermediate 6-2

[0437] Intermediate 6-2 was synthesized in the same manner as used to prepare Intermediate 1-2, except that Intermediate 6-1 was used instead of Intermediate 1-1. (Yield: 70%)

[0438] Synthesis of compound 6

[0439] Compound 6 was synthesized in the same manner as used to prepare compound 1, except that intermediate 6-2 was used instead of intermediate 1-2. (Yield: 3%)

[0440] Synthesis Example 4: Synthesis of Compound 7

[0441]

[0442] Synthetic intermediate 7-1

[0443] Intermediate 7-1 was synthesized in the same manner as used to prepare Intermediate 1-1, except that 5-phenyl-5,8-dihydroindolo[2,3-c]carbazole was used instead of 5H-benzofuro[3,2-c]carbazole. (Yield: 64%)

[0444] Synthetic intermediate 7-2

[0445] Intermediate 7-2 was synthesized in the same manner as used to prepare Intermediate 1-2, except that Intermediate 7-1 was used instead of Intermediate 1-1. (Yield: 50%)

[0446] Synthesis of compound 7

[0447] Compound 7 was synthesized in the same manner as used to prepare compound 1, except that intermediate 7-2 was used instead of intermediate 1-2. (Yield: 5%)

[0448] Synthesis Example 5: Synthesis of Compound 26

[0449]

[0450] Synthetic intermediate 26-1

[0451] Intermediate 26-1 was synthesized in the same manner as used to prepare Intermediate 1-1, except that 5H-benzo[4,5]thieno[3,2-c]carbazole was used instead of 5H-benzofuro[3,2-c]carbazole. (Yield: 44%)

[0452] Synthetic intermediate 26-2

[0453] Intermediate 26-2 was synthesized in the same manner as used to prepare Intermediate 1-2, except that Intermediate 26-1 was used instead of Intermediate 1-1. (Yield: 64%)

[0454] Synthesis of compound 26

[0455] Compound 26 was synthesized in the same manner as used to prepare compound 1, except that intermediate 26-2 was used instead of intermediate 1-2. (Yield: 2%)

[0456] The compounds synthesized according to Synthesis Examples 1 to 5 1 H NMR and MS / FAB are shown in Table 1. By referring to the above synthetic routes and source materials, those skilled in the art can easily recognize the synthesis of other compounds besides the compounds shown in Table 1.

[0457] Table 1

[0458]

[0459] Example 1

[0460] As the anode, Corning 15Ω / cm 2 The ITO glass substrate was cut into a size of 50 mm x 50 mm x 0.7 mm, ultrasonicated with isopropyl alcohol and pure water for 5 minutes each, and then cleaned by exposing to ultraviolet rays and ozone for 30 minutes.The ITO glass substrate was provided to a vacuum deposition apparatus.

[0461] NPD was vacuum deposited on the ITO anode formed on the ITO glass substrate to form a The hole injection layer is formed by vacuum depositing HT6 on the hole injection layer to form a hole injection layer having a thickness of The first hole transport layer.

[0462] CzSi as a hole transport compound was vacuum deposited on the first hole transport layer to form a layer with a thickness of a second hole transport layer.

[0463] mCP (host) and compound 1 (dopant) were co-deposited on the second hole transport layer at a weight ratio of 99:1 to form a layer with a thickness of The emission layer.

[0464] Subsequently, TSPO1 is deposited on the emission layer to form a thickness of TPBI is deposited on the buffer layer to form a buffer layer with a thickness of electron transport layer.

[0465] LiF as an alkali metal halide is deposited on the electron transport layer to form a layer with a thickness of The electron injection layer is vacuum deposited on Al to form a layer with a thickness of HT28 was vacuum deposited on the LiF / Al electrode to form a LiF / Al electrode with a thickness of The covering layer is formed, thereby completing the manufacture of the light-emitting device.

[0466]

[0467] Examples 2 to 10 and Comparative Examples 1 to 7

[0468] A light-emitting device was manufactured in the same manner as in Example 1, except that the materials shown in Table 2 were used instead of HT6 when forming each first hole transport layer, and the compounds shown in Table 2 were used instead of Compound 1 when forming each emission layer.

[0469] Evaluation Example 1

[0470] In order to evaluate the characteristics of the light emitting devices of Examples 1 to 10 and Comparative Examples 1 to 7, the current density at 10 mA / cm 2 The driving voltage, luminous efficiency and maximum external quantum efficiency (EQE) under . The driving voltage of the light-emitting device was measured using a source meter (Keithley Instrument, 2400 series), and the maximum EQE was measured using an external quantum efficiency measurement device C9920-2-12 from Hamamatsu Photonics Inc. When evaluating the maximum EQE, the luminance / current density was measured using a luminance meter calibrated for wavelength sensitivity, and the maximum EQE was converted under the assumption that an angular luminance distribution (Lambertian) was obtained relative to a completely diffuse reflection surface. The characteristic evaluation results of the light-emitting device are shown in Table 2.

[0471] Table 2

[0472]

[0473]

[0474]

[0475]

[0476] Referring to Table 2, it can be confirmed that the light-emitting devices of Examples 1 to 10 have reduced driving voltage, increased luminous efficiency, and increased maximum EQE compared to the light-emitting devices of Comparative Examples 1 to 7.

[0477] According to one or more embodiments, the light emitting device may have low driving voltage, high efficiency, and long lifespan, and in this regard, such a light emitting device may be used to manufacture high-quality electronic devices.

[0478] According to an embodiment, at least one of the hole transport region and the emission layer includes an aromatic amine-containing compound, an acridine-containing compound, a carbazole-containing compound, or any combination thereof; or at least one of the emission layer and the electron transport region includes a silicon-containing compound, a phosphine oxide-containing compound, a sulfur oxide-containing compound, a phosphorus oxide-containing compound, a triazine-containing compound, a pyrimidine-containing compound, a pyridine-containing compound, a dibenzofuran-containing compound, a dibenzothiophene-containing compound, or any combination thereof.

[0479] When describing embodiments of the present invention, the use of “may” refers to “one or more embodiments of the present invention.” It will be understood that when an element or layer is referred to as being “on,” “connected to,” “coupled to,” or “adjacent to” another element or layer, it can be directly on, directly connected to, directly coupled to, or directly adjacent to the other element or layer, or one or more intervening elements or layers may be present. In contrast, when an element or layer is referred to as being “directly on,” “directly connected to,” “directly coupled to,” or “immediately adjacent to” another element or layer, there are no intervening elements or layers present.

[0480] As used herein, the terms "substantially", "about" and similar terms are used as approximate terms rather than degree terms, and are intended to explain the inherent deviations of measured or calculated values that will be recognized by those of ordinary skill in the art. In addition, any numerical ranges listed herein are intended to include all subranges of the same numerical precision included in the listed ranges. For example, the range of "1.0 to 10.0" is intended to include all subranges between the listed minimum value 1.0 and the listed maximum value 10.0 (and including the end values), that is, all subranges with a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as, for example, 2.4 to 7.6. Any maximum numerical limit listed herein is intended to include all lower numerical limits included therein, and any minimum numerical limit listed in this specification is intended to include all higher numerical limits included therein. Therefore, the applicant reserves the right to amend this specification (including claims) to explicitly list any subranges included in the range explicitly listed herein. All such ranges are intended to be inherently described in this specification so that amendments to explicitly state that any such subranges will meet the requirements.

[0481] It should be understood that the embodiments described herein should be considered only as descriptive and not for the purpose of limitation. The description of features or aspects in each embodiment should generally be considered to be applicable to other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the drawings, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims and their equivalents.

Claims

1. A light-emitting device, comprising: a first electrode; a second electrode facing the first electrode; and an intermediate layer between the first electrode and the second electrode and including an emission layer, wherein the intermediate layer further comprises a hole transport region between the first electrode and the emissive layer, The hole transport region includes a compound represented by Formula 201, a compound represented by Formula 202, or any combination thereof, and The emission layer includes at least one condensed ring compound represented by Formula 1: Formula 1 Formula 201 Formula 202 In formula 1, X1 and X2 are each independently O or S, Ring CY0 to Ring CY6 are each independently C5-C 30 Carbocyclic group or C1-C 30 A heterocyclic group, wherein at least one of ring CY3 and ring CY6 is not phenyl, R0 to R6 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted by at least one R 10a Substituted C1-C 60 Heterocyclic group, unsubstituted or substituted by at least one R 10a Substituted C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C6-C 60 arylthio, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), a0 to a6 are each independently an integer selected from 0 to 20, R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, or nitro; Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof; Each unsubstituted or substituted C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy or C6-C 60 Arylthio: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof; or -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 ), and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; or each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group or C1-C 60 a heterocyclic group, and Among them, in Equation 201 and Equation 202, L 201 To L 204 are each independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups, L 205 For *-O-*', *-S-*', *-N(Q 201 )-*', unsubstituted or replaced by at least one R 10a Substituted C1-C 20 Alkylene, unsubstituted or substituted with at least one R 10a Substituted C2-C 20 Alkenylene, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups, xa1 to xa4 are each independently an integer selected from 0 to 5, xa5 is an integer from 1 to 10, R 201 to R 204 and Q 201 are each independently unsubstituted or substituted with at least one R 10a Substituted C5-C 60 The carbocyclic group is either unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Heterocyclic groups, R 201 and R 202 Optionally, through a single bond, unsubstituted or substituted by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 Polycyclic groups, R 203 and R 204 Optionally, through a single bond, unsubstituted or substituted by at least one R 10a Substituted C1-C5 alkylene or unsubstituted or replaced by at least one R 10a The substituted C2-C5 alkenylene groups are linked to each other to form an unsubstituted or substituted R 10a Replaced C8-C 60 Polycyclic groups, na1 is an integer selected from 1 to 4, and * and *' each indicate a binding site with an adjacent atom.

2. The light emitting device according to claim 1, wherein The first electrode is an anode, The second electrode is a cathode, The intermediate layer further includes an electron transport region between the emission layer and the second electrode, The hole transport region includes a hole injection layer, a hole transport layer, an emission assisting 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.

3. The light emitting device according to claim 2, wherein At least one of the hole transport region and the emissive layer comprises an aromatic amine-containing compound, an acridine-containing compound, a carbazole-containing compound, or any combination thereof; or At least one of the emission layer and the electron transport region includes at least one of a silicon-containing compound, a phosphine oxide-containing compound, a sulfur oxide-containing compound, a phosphorus oxide-containing compound, a triazine-containing compound, a pyrimidine-containing compound, a pyridine-containing compound, a dibenzofuran-containing compound, or a dibenzothiophene-containing compound.

4. The light-emitting device according to claim 1, wherein ring CY0 to ring CY6 are each independently phenyl, naphthyl, anthracenyl, phenanthrenyl, triphenylenyl, pyrenyl, chrysyl, cyclopentadienyl, 1,2,3,4-tetrahydronaphthyl, thienyl, furanyl, indolyl, benzoborol, benzophosphol, indenyl, benzosilol, benzogermanol, benzothienyl, benzoselenophene, benzofuranyl, carbazolyl, dibenzoborol , dibenzophospholyl, fluorenyl, dibenzosilyl, dibenzogermanyl, dibenzothiophene, dibenzoselenophene, dibenzofuranyl, dibenzothiophene 5-oxide, 9H-fluoren-9-one, dibenzothiophene 5,5-dioxide, azaindolyl, azabenzoborolyl, azabenzophospholyl, azaindenyl, azabenzosilyl, azabenzogermanyl, azabenzothiophene, aza Heterobenzoselenophene, azabenzofuranyl, azacarbazolyl, azadibenzoborol, azadibenzophosphol, azafluorenyl, azadibenzosilol, azadibenzogermanyl, azadibenzothiophene, azadibenzoselenophene, azadibenzofuranyl, azadibenzothiophene 5-oxide, aza-9H-fluoren-9-one, azadibenzothiophene 5,5-dioxide, pyridyl, pyrimidinyl, pyrazinyl, pyridazine alkyl, benzothiazolyl, benzoxazolyl, benzothiazolyl, benzoxadiazolyl, benzothiadiazolyl, 5,6,7,8-tetrahydroisoquinolinyl or 5,6,7,8-tetrahydroquinolinyl, wherein at least one of ring CY3 and ring CY6 is not phenyl. 5 . The light-emitting device according to claim 1 , wherein at least one of ring CY 3 and ring CY 6 is a fluorenyl group, a carbazolyl group, a dibenzofuranyl group, or a dibenzothiophenyl group. The light emitting device according to claim 1 , wherein In formula 1, The group represented by is represented by any one of formula CY3-1 to formula CY3-3: and in, In Formula CY3-1 to Formula CY3-3, X1, ring CY1, ring CY4, R1, R3, R4, a1 and a4 are each independently the same as described in conjunction with Formula 1, * and *' each indicate a connection site to ring CY0 in Formula 1, X 31 For single bonds, O, S, Se, C(R 31a )(R 31b )、Si(R 31a )(R 31b ) or N(R 31a ), X 32 For single bonds, O, S, Se, C(R 32a )(R 32b )、Si(R 32a )(R 32b ) or N(R 32a ), X 31 and X 32 The two are not single bonds at the same time. R 31a 、R 31b 、R 32a and R 32b are each independently the same as described in conjunction with R3, and a36 is an integer selected from 0 to 6.

7. The light emitting device according to claim 1, wherein In formula 1, The group represented by is represented by any one of formula CY3(1) to formula CY3(6): and in, In formula CY3(1) to formula CY3(6), X1, ring CY1, ring CY4, R1, R3, R4, a1 and a4 are each independently the same as described in conjunction with Formula 1, * and *' each indicate a connection site to ring CY0 in Formula 1, X 31 for O, S, Se, C(R 31a )(R 31b )、Si(R 31a )(R 31b ) or N(R 31a ), X 32 for O, S, Se, C(R 32a )(R 32b )、Si(R 32a )(R 32b ) or N(R 32a ), R 31a 、R 31b 、R 32a and R 32b are each independently the same as described in conjunction with R3, and a36 is an integer selected from 0 to 6.

8. The light emitting device according to claim 1, wherein In formula 1, The group represented by is represented by any one of formula CY6-1 to formula CY6-4: and in, In Formula CY6-1 to Formula CY6-4, X2, ring CY2, ring CY5, R2, R5, R6, a2 and a5 are each independently the same as described in conjunction with Formula 1, * and *' each indicate a connection site to ring CY0 in Formula 1, X 61 For single bonds, O, S, Se, C(R 61a )(R 61b )、Si(R 61a )(R 61b ) or N(R 61a ), X 62 For single bonds, O, S, Se, C(R 62a )(R 62b )、Si(R 62a )(R 62b ) or N(R 62a ), X 61 and X 62 The two are not single bonds at the same time. R 61a 、R 61b 、R 62a and R 62b each independently the same as described in conjunction with R6, a64 is an integer selected from 0 to 4, and a66 is an integer selected from 0 to 6.

9. The light emitting device according to claim 1, wherein In formula 1, The group represented by is represented by any one of formula CY6(1) to formula CY6(6) and formula CY6-4: and in, In formulas CY6(1) to CY6(6) and CY6-4, X2, ring CY2, ring CY5, R2, R5, R6, a2 and a5 are each independently the same as described in conjunction with Formula 1, * and *' each indicate a connection site to ring CY0 in Formula 1, X 61 for O, S, Se, C(R 61a )(R 61b )、Si(R 61a )(R 61b ) or N(R 61a ), X 62 for O, S, Se, C(R 62a )(R 62b )、Si(R 62a )(R 62b ) or N(R 62a ), R 61a 、R 61b 、R 62a and R 62b each independently the same as described in conjunction with R6, a64 is an integer selected from 0 to 4, and a66 is an integer selected from 0 to 6. 10 . The light-emitting device according to claim 1 , wherein at least one of ring CY 4 and ring CY 5 is a phenyl group.

11. The light emitting device according to claim 1 , wherein R0 to R6 are each independently: hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxy, cyano or nitro; Each unsubstituted or substituted C1-C 20 Alkyl, C2-C 20 Alkenyl, C2-C 20 Alkynyl or C1-C 20 Alkoxy: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, biphenyl, naphthyl, pyridyl, pyrimidinyl, -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 ),-P(=O)(Q 31 )(Q 32 ) or any combination thereof; each unsubstituted or substituted by cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysene, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indazolyl, purinyl, quinolinyl, isoquinolinyl, benzoquinolinyl, quinoxaline quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl or imidazopyrimidinyl: deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl, cyano, nitro, C1-C 20 Alkyl, C2-C 20 Alkenyl, C2-C 20 Alkynyl, C1-C 20 Alkoxy, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantyl, norbornyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenanthrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysene, pyrrolyl, thienyl, furanyl, imidazolyl, pyrazolyl, thiazolyl, isothiazolyl, oxazolyl, isoxazolyl, pyridinyl, pyrazinyl, pyrimidinyl, pyridazinyl, isoindolyl, indolyl, indole, oxazolyl, purinyl, quinolyl, isoquinolyl, benzoquinolyl, quinoxalinyl, quinazolinyl, cinnolinyl, carbazolyl, phenanthrolinyl, benzimidazolyl, benzofuranyl, benzothiophenyl, benzisothiazolyl, benzoxazolyl, benzisoxazolyl, triazolyl, tetrazolyl, oxadiazolyl, triazinyl, dibenzofuranyl, dibenzothiophenyl, benzocarbazolyl, dibenzocarbazolyl, imidazopyridinyl, imidazopyrimidinyl, -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 ),-P(=O)(Q 31 )(Q 32 ) or any combination thereof; or -B(Q1)(Q2), -P(Q1)(Q2) or -C(=O)(Q1). 12 . The light-emitting device of claim 1 , wherein ring CY3 and ring CY6 are identical to each other.

13. The light-emitting device of claim 1 , wherein the at least one condensed-cyclic compound of the emission layer comprises one of Compounds 1 to 56: The light-emitting device of claim 1 , wherein the emission layer emits blue light or blue-green light. 15 . The light-emitting device according to claim 1 , wherein the emission layer has a lowest excited triplet energy level of equal to or greater than 2.4 eV and equal to or less than 3.1 eV.

16. A light emitting device comprising: a first electrode; a second electrode facing the first electrode; and an intermediate layer between the first electrode and the second electrode and including an emission layer, The light emitting device further includes a second covering layer outside the second electrode and having a refractive index equal to or greater than 1.6, and The emission layer includes at least one condensed ring compound represented by Formula 1: Formula 1 and In formula 1, X1 and X2 are each independently O or S, Ring CY0 to Ring CY6 are each independently C5-C 30 Carbocyclic group or C1-C 30 A heterocyclic group, wherein at least one of ring CY3 and ring CY6 is not phenyl, R0 to R6 are each independently hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, unsubstituted or replaced by at least one R 10a Substituted C1-C 60 Alkyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkenyl, unsubstituted or substituted with at least one R 10a Substituted C2-C 60 Alkynyl, unsubstituted or substituted with at least one R 10a Substituted C1-C 60 Alkoxy, unsubstituted or substituted with at least one R 10a Substituted C3-C 60 Carbocyclic group, unsubstituted or substituted by at least one R 10a Substituted C1-C 60 Heterocyclic group, unsubstituted or substituted by at least one R 10a Substituted C6-C 60 Aryloxy, unsubstituted or substituted with at least one R 10a Substituted C6-C 60 arylthio, -Si(Q1)(Q2)(Q3), -N(Q1)(Q2), -B(Q1)(Q2), -C(=O)(Q1), -S(=O)2(Q1) or -P(=O)(Q1)(Q2), a0 to a6 are each independently an integer selected from 0 to 20, R 10a for: deuterium, -F, -Cl, -Br, -I, hydroxy, cyano, or nitro; Each unsubstituted or substituted C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl or C1-C 60 Alkoxy: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof; Each unsubstituted or substituted C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy or C6-C 60 Arylthio: deuterium, -F, -Cl, -Br, -I, hydroxyl, cyano, nitro, C1-C 60 Alkyl, C2-C 60 Alkenyl, C2-C 60 Alkynyl, C1-C 60 Alkoxy, C3-C 60 Carbocyclic groups, C1-C 60 Heterocyclic groups, C6-C 60 Aryloxy, C6-C 60 Arylthio, -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 ) or any combination thereof; or -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 ), and Q1 to Q3, Q 11 To Q 13 , Q 21 To Q 23 and Q 31 To Q 33 Each independently represents: hydrogen; deuterium; -F; -Cl; -Br; -I; hydroxyl; cyano; nitro; C1-C 60 Alkyl; C2-C 60 Alkenyl; C2-C 60 Alkynyl; C1-C 60 Alkoxy; each unsubstituted or deuterated, -F, cyano, C1-C 60 Alkyl, C1-C 60 C3-C substituted by alkoxy, phenyl, biphenyl or any combination thereof 60 Carbocyclic group or C1-C 60 Heterocyclic group. The light emitting device of claim 16 , further comprising an encapsulation portion on the second cover layer.

18. The light emitting device according to claim 17, wherein the packaging portion comprises: an inorganic film comprising silicon nitride, silicon oxide, indium tin oxide, indium zinc oxide, or any combination thereof; An organic film comprising polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyethylene sulfonate, polyoxymethylene, polyarylate, hexamethyldisiloxane, acrylic resin, epoxy resin, or any combination thereof; or A combination of the inorganic film and the organic film.

19. An electronic device comprising the light emitting device according to any one of claims 1 to 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 light emitting device is electrically connected to the source electrode or the drain electrode of the thin film transistor.

20. The electronic device of claim 19, wherein the electronic device further comprises a color filter, a color conversion layer, a touch screen layer, a polarizing layer, or any combination thereof.

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