Organic electroluminescent device, organic layer, display assembly thereof and electronic equipment

Abstract

The invention discloses an organic electroluminescent device, the organic electroluminescent device comprises an anode, a cathode and an organic layer arranged between the anode and the cathode, the organic layer comprises a first metal complex with a structural ligand shown in a formula 1 and a first compound with a structural ligand shown in a formula 2, and the organic electroluminescent device has more excellent comprehensive performance; and particularly, the service life can be remarkably prolonged. Also disclosed are a composition comprising a first metal complex having a structural ligand of Formula 1 and a first compound having a structure of Formula 2, and an organic layer comprising the composition. A display assembly and an electronic device comprising the electroluminescent device or the organic layer are also disclosed.

Description

Technical Field

[0001] The present invention relates to an organic electroluminescent device, and more particularly to an organic electroluminescent device comprising a first metal complex having a ligand structure of Formula 1 and a first compound having a structure of Formula 2, an organic layer, and a display component and an electronic device comprising the organic electroluminescent device and the organic layer. Background Art

[0002] Organic electronic devices include but are not limited to the following categories: organic light emitting diodes (OLEDs), organic field effect transistors (O-FETs), organic light emitting transistors (OLETs), organic photovoltaic devices (OPVs), dye-sensitized solar cells (DSSCs), organic optical detectors, organic photoreceptors, organic field effect devices (OFQDs), light emitting electrochemical cells (LECs), organic laser diodes and organic plasmonic light emitting devices.

[0003] In 1987, Tang and Van Slyke of Eastman Kodak reported a double-layer organic electroluminescent device, which included an arylamine hole transport layer and a tri-8-hydroxyquinoline-aluminum layer as an electron transport layer and a light-emitting layer (Applied Physics Letters, 1987, 51 (12): 913-915). Once a bias voltage is applied to the device, green light is emitted from the device. This invention laid the foundation for the development of modern organic light-emitting diodes (OLEDs). The most advanced OLEDs can include multiple layers, such as charge injection and transport layers, charge and exciton blocking layers, and one or more light-emitting layers between the cathode and the anode. Since OLEDs are self-luminous solid-state devices, they offer great potential for display and lighting applications. In addition, the inherent properties of organic materials, such as their flexibility, can make them very suitable for special applications, such as fabrication on flexible substrates.

[0004] OLEDs can be divided into three different types based on their light emission mechanism. The OLED invented by Tang and van Slyke is a fluorescent OLED. It uses only singlet light emission. The triplet generated in the device is wasted through non-radiative decay channels. Therefore, the internal quantum efficiency (IQE) of fluorescent OLEDs is only 25%. This limitation has hindered the commercialization of OLEDs. In 1997, Forrest and Thompson reported phosphorescent OLEDs, which used triplet light emission from heavy metals containing complexes as emitters. Therefore, singlet and triplet states can be harvested, achieving 100% IQE. Due to its high efficiency, the discovery and development of phosphorescent OLEDs directly contributed to the commercialization of active matrix OLEDs (AMOLEDs). Recently, Adachi achieved high efficiency through thermally activated delayed fluorescence (TADF) of organic compounds. These emitters have a small singlet-triplet gap, making it possible for excitons to return from triplet to singlet. In TADF devices, triplet excitons can generate singlet excitons through reverse intersystem crossing, resulting in high IQE.

[0005] OLEDs can also be classified into small molecule and polymer OLEDs based on the form of the material used. Small molecules are any organic or organometallic material that is not a polymer. Small molecules can have a large molecular weight as long as they have a precise structure. Dendrimers with well-defined structures are considered small molecules. Polymer OLEDs include conjugated polymers and non-conjugated polymers with pendant luminescent groups. Small molecule OLEDs can become polymer OLEDs if post-polymerization occurs during the manufacturing process.

[0006] There are various OLED manufacturing methods. Small molecule OLEDs are usually manufactured by vacuum thermal evaporation. Polymer OLEDs are manufactured by solution methods such as spin coating, inkjet printing, and nozzle printing. Small molecule OLEDs can also be manufactured by solution methods if the material can be dissolved or dispersed in a solvent.

[0007] The emission color of OLED can be achieved by the structural design of the luminescent material. OLED can include one luminescent layer or multiple luminescent layers to achieve the desired spectrum. Green, yellow and red OLEDs, phosphorescent materials have been successfully commercialized. Blue phosphorescent devices still have problems such as blue unsaturation, short device life and high operating voltage. Commercial full-color OLED displays usually adopt a hybrid strategy, using blue fluorescence and phosphorescent yellow, or red and green. At present, the efficiency of phosphorescent OLEDs decreases rapidly under high brightness conditions, which is still a problem. In addition, it is expected to have a more saturated emission spectrum, higher efficiency and longer device life.

[0008] CN103347857A discloses an organic compound having the following structure and an organic light-emitting device comprising the compound: Wherein, A1 and A2 are independently substituted or unsubstituted aromatic hydrocarbon groups having 6 to 30 ring carbon atoms; Y1-Y 16 Each independently represents C(R) or a nitrogen atom, and each R independently represents a hydrogen atom, a substituent or a connecting bond to the carbazole skeleton; at least one of A1, A2 and R represents a substituted or unsubstituted fluoranthene group, a substituted or unsubstituted benzo[9,10]phenanthryl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted benzobenzo[9,10]phenanthryl group, etc. This application focuses on the effect that can be brought about by the application of a compound having a bicarbazole structure shown in a specific formula 1 in an electroluminescent device, but it does not focus on the combination of materials in the device, especially on the performance of such a compound and a metal complex with a specific skeleton that is more compatible, and there is no teaching on the further improvement of device performance when it is combined with a metal complex with a specific skeleton structure.

[0009] The present inventors have found through in-depth research that the use of an organic electroluminescent device comprising a first metal complex having a ligand structure of Formula 1 and a first compound having a structure of Formula 2 can significantly improve the overall performance of the organic electroluminescent device. Summary of the invention

[0010] The present invention aims to provide an organic electroluminescent device comprising a first metal complex having a ligand structure of Formula 1 and a first compound having a structure of Formula 2 to solve at least part of the above problems. The organic electroluminescent device has better comprehensive performance, especially in terms of device life, and has a significant effect improvement.

[0011] According to one embodiment of the present invention, an organic electroluminescent device is disclosed, comprising:

[0012] anode,

[0013] cathode,

[0014] and an organic layer disposed between the anode and the cathode, the organic layer comprising at least a first metal complex and a first compound;

[0015] Wherein, the first metal complex comprises a metal M and a ligand L coordinated with the metal M. a , L a Having a structure represented by Formula 1:

[0016]

[0017] in,

[0018] The metal M is selected from metals with a relative atomic mass greater than 40;

[0019] Cy is selected, at each occurrence, identically or differently, from substituted or unsubstituted aryl having 5 to 24 ring atoms, or substituted or unsubstituted heteroaryl having 5 to 24 ring atoms, or a combination thereof;

[0020] The Cy is connected to the metal M via G1;

[0021] G1 and G2 are identically or differently selected at each occurrence from a single bond, O or S;

[0022] X1-X8 are selected from C, CR in the same or different manner at each occurrence x Or N; and at least one of X1-X4 is selected from C and connected to Cy; at least one of X1-X4 is selected from C or N and connected to the metal M through G2;

[0023] X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1 at each occurrence; when two R1s are present at the same time, the two R1s are the same or different;

[0024] R x and R1, at each occurrence, is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0025] At least one of X1-X8 is CR x , and the R x is selected from cyano or fluorine;

[0026] Adjacent substituents R1, R x can optionally be linked to form a ring;

[0027] Wherein, the first compound has a structure represented by Formula 2:

[0028]

[0029] in,

[0030] W is selected from C, CR, w or N;

[0031] Each time V1-V4 appears, they are selected from C, CR v or N, and one of V1-V4 is selected from C and connected to L2;

[0032] V5-V 12 Each occurrence is the same or different selection from CR v or N;

[0033] L, L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms, or a combination thereof;

[0034] Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof;

[0035] R w and R vThe group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0036] Adjacent substituent R w can be optionally linked into a ring;

[0037] Adjacent substituent R v Can optionally be linked to form a ring.

[0038] According to another embodiment of the present invention, a composition is also disclosed, which includes the first metal complex having a structure of Formula 1 and the first compound having a structure of Formula 2.

[0039] According to another embodiment of the present invention, an organic layer is disclosed, which comprises the composition described in the above embodiment.

[0040] According to another embodiment of the present invention, a display component is also disclosed, which includes the organic electroluminescent device or the organic layer.

[0041] According to another embodiment of the present invention, an electronic device is also disclosed, which includes the organic electroluminescent device, or includes the organic layer, or includes the display component.

[0042] The organic electroluminescent device provided by the present invention improves the comprehensive performance of the device by selecting a first metal complex having a ligand structure of specific formula 1 and a first compound having a structure of specific formula 2 for combined application, and in particular, enables the device containing the same to show unique advantages in terms of lifespan, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a schematic diagram of an organic light-emitting device that may contain the compounds and compound combinations disclosed herein.

[0044] Figure 2 is a schematic diagram of another organic light-emitting device that may contain the compounds and compound combinations disclosed herein. DETAILED DESCRIPTION

[0045] OLEDs can be manufactured on a variety of substrates, such as glass, plastic, and metal. Figure 1 An organic light-emitting device 100 is shown schematically and non-limitingly. The figure is not necessarily drawn to scale, and some layer structures in the figure may be omitted as needed. The device 100 may include a substrate 101, an anode 110, a hole injection layer 120, a hole transport layer 130, an electron blocking layer 140, a light-emitting layer 150, a hole blocking layer 160, an electron transport layer 170, an electron injection layer 180 and a cathode 190. The device 100 can be manufactured by depositing the described layers in sequence. The properties and functions of each layer and exemplary materials are described in more detail in columns 6-10 of U.S. Patent No. 7,279,704 B2, the entire contents of which are incorporated herein by reference.

[0046] There are more examples of each of these layers. For example, a flexible and transparent substrate-anode combination is disclosed in U.S. Patent No. 5,844,363, which is incorporated by reference in its entirety. An example of a p-doped hole transport layer is m-MTDATA doped with F4-TCNQ at a molar ratio of 50:1, as disclosed in U.S. Patent Application Publication No. 2003 / 0230980, which is incorporated by reference in its entirety. An example of a host material is disclosed in U.S. Patent No. 6,303,238 to Thompson et al., which is incorporated by reference in its entirety. An example of an n-doped electron transport layer is BPhen doped with Li at a molar ratio of 1:1, as disclosed in U.S. Patent Application Publication No. 2003 / 0230980, which is incorporated by reference in its entirety. U.S. Patent Nos. 5,703,436 and 5,707,745, which are incorporated by reference in their entirety, disclose examples of cathodes including composite cathodes having a thin layer of metal such as Mg:Ag with an overlying transparent, conductive, sputter-deposited ITO layer. The principles and use of barrier layers are described in more detail in U.S. Patent No. 6,097,147 and U.S. Patent Application Publication No. 2003 / 0230980, which are incorporated by reference in their entirety. Examples of injection layers are provided in U.S. Patent Application Publication No. 2004 / 0174116, which is incorporated by reference in its entirety. A description of protective layers can be found in U.S. Patent Application Publication No. 2004 / 0174116, which is incorporated by reference in its entirety.

[0047] The above layered structure is provided by way of non-limiting example. The functions of an OLED can be achieved by combining the various layers described above, or some layers can be omitted entirely. It can also include other layers not explicitly described. Within each layer, a single material or a mixture of multiple materials can be used to achieve optimal performance. Any functional layer can include several sublayers. For example, a light-emitting layer can have two layers of different light-emitting materials to achieve a desired light-emitting spectrum.

[0048] In one embodiment, an OLED may be described as having an "organic layer" disposed between a cathode and an anode. The organic layer may include one or more layers.

[0049] OLED also requires encapsulation layers, such as Figure 2 The organic light emitting device 200 is schematically and non-limitingly shown. Figure 1 The difference is that an encapsulation layer 102 may also be included on the cathode 190 to prevent harmful substances from the environment, such as moisture and oxygen. Any material that can provide an encapsulation function can be used as an encapsulation layer, such as glass or an organic-inorganic hybrid layer. The encapsulation layer should be placed directly or indirectly on the outside of the OLED device. Multilayer thin film encapsulation is described in U.S. Patent No. 7,968,146 B2, the entire contents of which are incorporated herein by reference.

[0050] Devices manufactured according to embodiments of the present invention can be incorporated into various consumer products having one or more electronic component modules (or units) of the device. Some examples of these consumer products include flat panel displays, monitors, medical monitors, televisions, billboards, lights for indoor or outdoor lighting and / or signaling, heads-up displays, fully or partially transparent displays, flexible displays, smart phones, tablet computers, tablet phones, wearable devices, smart watches, laptop computers, digital cameras, camcorders, viewfinders, micro displays, 3-D displays, vehicle displays, and taillights.

[0051] The materials and structures described herein may also be used in other organic electronic devices listed above.

[0052] As used herein, "top" means farthest from the substrate, while "bottom" means closest to the substrate. Where a first layer is described as being "disposed" "on" a second layer, the first layer is disposed farther from the substrate. Unless it is specified that the first layer is "in contact with" the second layer, other layers may be present between the first and second layers. For example, a cathode may be described as being "disposed" "on" an anode even though various organic layers are present between the cathode and the anode.

[0053] As used herein, "solution processable" means capable of being dissolved, dispersed or transported in and / or deposited from a liquid medium in the form of a solution or suspension.

[0054] A ligand may be referred to as "photoactive" when it is believed that the ligand directly contributes to the photoactive property of the emissive material. A ligand may be referred to as "ancillary" when it is believed that the ligand does not contribute to the photoactive property of the emissive material, but the ancillary ligand may alter the properties of the photoactive ligand.

[0055] It is believed that the internal quantum efficiency (IQE) of fluorescent OLEDs can exceed the 25% spin-statistical limit through delayed fluorescence. Delayed fluorescence can generally be divided into two types, namely P-type delayed fluorescence and E-type delayed fluorescence. P-type delayed fluorescence is generated by triplet-triplet annihilation (TTA).

[0056] On the other hand, E-type delayed fluorescence does not rely on the collision of two triplets, but on the conversion between triplet and singlet excited state. Compounds capable of producing E-type delayed fluorescence need to have a very small single-triplet gap for the conversion between energy states. Thermal energy can activate the transition from triplet back to singlet. This type of delayed fluorescence is also called thermally activated delayed fluorescence (TADF). The notable feature of TADF is that the delayed component increases with increasing temperature. If the reverse intersystem crossing (RISC) rate is fast enough to minimize the non-radiative decay by triplet, the fraction of backfilling singlet excited state may reach 75%. The total singlet fraction can be 100%, far exceeding the 25% of the spin statistics of the excitons generated by electricity.

[0057] The E-type delayed fluorescence feature can be seen in an exciplex system or a single compound. Without being bound by theory, it is believed that the E-type delayed fluorescence requires the luminescent material to have a small singlet-triplet energy gap (ΔE S-T ). Organic non-metal-containing donor-acceptor luminescent materials may be able to achieve this. The emission of these materials is usually characterized by donor-acceptor charge transfer (CT) type emission. The spatial separation of the HOMO and LUMO in these donor-acceptor type compounds usually produces a small ΔE S-T These states may include CT states. Generally, donor-acceptor light-emitting materials are constructed by linking an electron donor moiety (eg, an amino group or a carbazole derivative) to an electron acceptor moiety (eg, a six-membered aromatic ring containing N).

[0058] Definition of Substituent Terms

[0059] Halogen or halide - as used herein includes fluorine, chlorine, bromine and iodine.

[0060] Alkyl - as used herein, includes straight chain and branched alkyl groups. The alkyl group may be an alkyl group having 1 to 20 carbon atoms, preferably an alkyl group having 1 to 12 carbon atoms, and more preferably an alkyl group having 1 to 6 carbon atoms. Examples of alkyl groups include methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, n-heptadecyl, n-octadecyl, neopentyl, 1-methylpentyl, 2-methylpentyl, 1-pentylhexyl, 1-butylpentyl, 1-heptyloctyl, 3-methylpentyl. Among the above, methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, n-pentyl, neopentyl and n-hexyl are preferred. In addition, the alkyl group may be optionally substituted.

[0061] Cycloalkyl - as used herein, includes cyclic alkyl. Cycloalkyl can be a cycloalkyl having 3 to 20 ring carbon atoms, preferably a cycloalkyl having 4 to 10 carbon atoms. Examples of cycloalkyl include cyclobutyl, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4,4-dimethylcyclohexyl, 1-adamantyl, 2-adamantyl, 1-norbornyl, 2-norbornyl, etc. Among the above, cyclopentyl, cyclohexyl, 4-methylcyclohexyl, 4,4-dimethylcyclohexyl are preferred. In addition, cycloalkyl can be optionally substituted.

[0062] Heteroalkyl - As used herein, a heteroalkyl group comprises one or more carbons in an alkyl chain substituted with a heteroatom selected from the group consisting of a nitrogen atom, an oxygen atom, a sulfur atom, a selenium atom, a phosphorus atom, a silicon atom, a germanium atom and a boron atom. The heteroalkyl group may be a heteroalkyl group having 1 to 20 carbon atoms, preferably a heteroalkyl group having 1 to 10 carbon atoms, and more preferably a heteroalkyl group having 1 to 6 carbon atoms. Examples of heteroalkyl include methoxymethyl, ethoxymethyl, ethoxyethyl, methylthiomethyl, ethylthiomethyl, ethylthioethyl, methoxymethoxymethyl, ethoxymethoxymethyl, ethoxyethoxyethyl, hydroxymethyl, hydroxyethyl, hydroxypropyl, mercaptomethyl, mercaptoethyl, mercaptopropyl, aminomethyl, aminoethyl, aminopropyl, dimethylaminomethyl, trimethylgermanylmethyl, trimethylgermanylethyl, trimethylgermanylisopropyl, dimethylethylgermanylmethyl, dimethylisopropylgermanylmethyl, tert-butyldimethylgermanylmethyl, triethylgermanylmethyl, triethylgermanylethyl, triisopropylgermanylmethyl, triisopropylgermanylethyl, trimethylsilylmethyl, trimethylsilylethyl, trimethylsilylisopropyl, triisopropylsilylmethyl, triisopropylsilylethyl. In addition, heteroalkyl may be optionally substituted.

[0063] Alkenyl - as used herein, encompasses straight chain, branched and cyclic olefin groups. Alkenyl can be an alkenyl containing 2 to 20 carbon atoms, preferably an alkenyl having 2 to 10 carbon atoms. Examples of alkenyl include vinyl, propenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1,3-butadienyl, 1-methylvinyl, styryl, 2,2-diphenylvinyl, 1,2-diphenylvinyl, 1-methylallyl, 1,1-dimethylallyl, 2-methylallyl, 1-phenylallyl, 2-phenylallyl, 3-phenylallyl, 3,3-diphenylallyl, 1,2-dimethylallyl, 1-phenyl-1-butenyl, 3-phenyl-1-butenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cycloheptenyl, cycloheptatrienyl, cyclooctenyl, cyclooctatetraenyl and norbornenyl. Additionally, alkenyl groups may be optionally substituted.

[0064] Alkynyl - as used herein, encompasses straight chain alkynyl. Alkynyl may be an alkynyl containing 2 to 20 carbon atoms, preferably an alkynyl having 2 to 10 carbon atoms. Examples of alkynyl include ethynyl, propynyl, propargyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-pentynyl, 2-pentynyl, 3,3-dimethyl-1-butynyl, 3-ethyl-3-methyl-1-pentynyl, 3,3-diisopropyl-1-pentynyl, phenylethynyl, phenylpropynyl, etc. Among the above, ethynyl, propynyl, propargyl, 1-butynyl, 2-butynyl, 3-butynyl, 1-pentynyl, phenylethynyl, etc. are preferred. In addition, alkynyl may be optionally substituted.

[0065] Aryl or aromatic group - As used herein, both non-fused and fused systems are contemplated. The aryl group may be an aryl group having 6 to 30 carbon atoms, preferably an aryl group having 6 to 20 carbon atoms, and more preferably an aryl group having 6 to 12 carbon atoms. Examples of aryl groups include phenyl, biphenyl, terphenyl, triphenylene, tetraphenylene, naphthalene, anthracene, phenanthrene, fluorene, pyrene, Perylene and azulene, preferably phenyl, biphenyl, terphenyl, triphenylene, fluorene and naphthalene. Examples of non-condensed aryl groups include phenyl, biphenyl-2-yl, biphenyl-3-yl, biphenyl-4-yl, p-terphenyl-4-yl, p-terphenyl-3-yl, p-terphenyl-2-yl, m-terphenyl-4-yl, m-terphenyl-3-yl, m-terphenyl-2-yl, o-tolyl, m-tolyl, p-tolyl, p-(2-phenylpropyl)phenyl, 4'-methylbiphenyl, 4"-tert-butyl-p-terphenyl-4-yl, o-cumyl, m-cumyl, p-cumyl, 2,3-xylyl, 3,4-xylyl, 2,5-xylyl, mesityl and m-quadrenyl. In addition, the aryl group may be optionally substituted.

[0066] Heterocyclic or heterocyclic - as used herein, non-aromatic cyclic groups are contemplated. Non-aromatic heterocyclic groups include saturated heterocyclic groups having 3-20 ring atoms and unsaturated non-aromatic heterocyclic groups having 3-20 ring atoms, wherein at least one ring atom is selected from the group consisting of nitrogen atoms, oxygen atoms, sulfur atoms, selenium atoms, silicon atoms, phosphorus atoms, germanium atoms and boron atoms, and preferred non-aromatic heterocyclic groups are those having 3 to 7 ring atoms, including at least one heteroatom such as nitrogen, oxygen, silicon or sulfur. Examples of non-aromatic heterocyclic groups include oxirane, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl, dioxopentanyl, dioxanyl, aziridinyl, dihydropyrrolyl, tetrahydropyrrolyl, piperidinyl, oxazolidinyl, morpholinyl, piperazinyl, oxepinyl, thiepinyl, azepine and tetrahydrothioxolyl. Additionally, the heterocyclyl group may be optionally substituted.

[0067] Heteroaryl - As used herein, non-fused and fused heteroaromatic groups may contain 1 to 5 heteroatoms, wherein at least one heteroatom is selected from the group consisting of nitrogen, oxygen, sulfur, selenium, silicon, phosphorus, germanium and boron atoms. Heteroaryl also refers to heteroaryl. The heteroaryl may be a heteroaryl having 3 to 30 carbon atoms, preferably a heteroaryl having 3 to 20 carbon atoms, and more preferably a heteroaryl having 3 to 12 carbon atoms. Suitable heteroaryl groups include dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indole, carbazole, pyridine, indole, pyrrolopyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, oxatriazole, dioxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indole, benzimidazole, indazole, indenozine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, In some embodiments, the heteroaryl group is substituted with 1,2-azaborine, 1,3-azaborine, 1,4-azaborine, borazole and its aza analogs. In some embodiments, the heteroaryl group is substituted with 1,2-azaborine, 1,3-azaborine, 1,4-azaborine, borazole and its aza analogs. In some embodiments, the heteroaryl group is substituted with 1,2-azaborine, 1,3-azaborine, 1,4-azaborine, borazole and its aza analogs. In addition, the heteroaryl group may be optionally substituted.

[0068] Alkoxy-as used herein, represented by -O-alkyl, -O-cycloalkyl, -O-heteroalkyl or -O-heterocyclyl. Examples and preferred examples of alkyl, cycloalkyl, heteroalkyl and heterocyclyl are the same as described above. Alkoxy can be an alkoxy having 1 to 20 carbon atoms, preferably an alkoxy having 1 to 6 carbon atoms. Examples of alkoxy include methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, cyclopropyloxy, cyclobutyloxy, cyclopentyloxy, cyclohexyloxy, tetrahydrofuranyloxy, tetrahydropyranyloxy, methoxypropyloxy, ethoxyethyloxy, methoxymethyloxy and ethoxymethyloxy. In addition, alkoxy can be optionally substituted.

[0069] Aryloxy - as used herein, represented by -O-aryl or -O-heteroaryl. Examples and preferred examples of aryl and heteroaryl are the same as above. Aryloxy can be an aryloxy having 6 to 30 carbon atoms, preferably an aryloxy having 6 to 20 carbon atoms. Examples of aryloxy include phenoxy and biphenyloxy. In addition, aryloxy can be optionally substituted.

[0070] Aralkyl - as used herein, encompasses aryl-substituted alkyl groups. Aralkyl groups may be aralkyl groups having 7 to 30 carbon atoms, preferably aralkyl groups having 7 to 20 carbon atoms, and more preferably aralkyl groups having 7 to 13 carbon atoms. Examples of aralkyl groups include benzyl, 1-phenylethyl, 2-phenylethyl, 1-phenylisopropyl, 2-phenylisopropyl, phenyl tert-butyl, α-naphthylmethyl, 1-α-naphthyl-ethyl, 2-α-naphthylethyl, 1-α-naphthylisopropyl, 2-α-naphthylisopropyl, β-naphthylmethyl, 1-β-naphthyl-ethyl, 2-β-naphthyl-ethyl, 1-β-naphthylisopropyl, 2-β-naphthylisopropyl, p-methylbenzyl, m-methylbenzyl, substituted alkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl, arylalkyl,

[0071] Alkylsilyl - As used herein, alkyl substituted silicon groups are contemplated. The alkylsilyl group may be an alkylsilyl group having 3-20 carbon atoms, preferably an alkylsilyl group having 3 to 10 carbon atoms. Examples of alkylsilyl groups include trimethylsilyl, triethylsilyl, methyldiethylsilyl, ethyldimethylsilyl, tripropylsilyl, tributylsilyl, triisopropylsilyl, methyldiisopropylsilyl, dimethylisopropylsilyl, tri-tert-butylsilyl, triisobutylsilyl, dimethyltert-butylsilyl, methyldi-tert-butylsilyl. In addition, the alkylsilyl group may be optionally substituted.

[0072] Arylsilyl - as used herein, encompasses at least one aryl-substituted silicon group. The arylsilyl group may be an arylsilyl group having 6 to 30 carbon atoms, preferably an arylsilyl group having 8 to 20 carbon atoms. Examples of arylsilyl groups include triphenylsilyl, phenyldiphenylsilyl, diphenylbiphenylsilyl, phenyldiethylsilyl, diphenylethylsilyl, phenyldimethylsilyl, diphenylmethylsilyl, phenyldiisopropylsilyl, diphenylisopropylsilyl, diphenylbutylsilyl, diphenylisobutylsilyl, diphenyltert-butylsilyl. In addition, the arylsilyl group may be optionally substituted.

[0073] Alkylgermanyl - As used herein, alkyl substituted germanyl is contemplated. The alkylgermanyl may be an alkylgermanyl having 3-20 carbon atoms, preferably an alkylgermanyl having 3 to 10 carbon atoms. Examples of alkylgermanyl include trimethylgermanyl, triethylgermanyl, methyldiethylgermanyl, ethyldimethylgermanyl, tripropylgermanyl, tributylgermanyl, triisopropylgermanyl, methyldiisopropylgermanyl, dimethylisopropylgermanyl, tri-tert-butylgermanyl, triisobutylgermanyl, dimethyltert-butylgermanyl, methyldi-tert-butylgermanyl. In addition, the alkylgermanyl may be optionally substituted.

[0074] Arylgermanyl - as used herein, encompasses germanyl substituted with at least one aryl or heteroaryl group. The arylgermanyl may be an arylgermanyl having 6 to 30 carbon atoms, preferably an arylgermanyl having 8 to 20 carbon atoms. Examples of arylgermanyl include triphenylgermanyl, phenyldibiphenylgermanyl, diphenylbiphenylgermanyl, phenyldiethylgermanyl, diphenylethylgermanyl, phenyldimethylgermanyl, diphenylmethylgermanyl, phenyldiisopropylgermanyl, diphenylisopropylgermanyl, diphenylbutylgermanyl, diphenylisobutylgermanyl, diphenyltert-butylgermanyl. In addition, the arylgermanyl may be optionally substituted.

[0075] The term "aza" in azadibenzofuran, azadibenzothiophene, etc. means that one or more CH groups in the corresponding aromatic fragment are replaced by a nitrogen atom. For example, azatriphenylene includes dibenzo[f,h]quinoxaline, dibenzo[f,h]quinoline and other analogs having two or more nitrogens in the ring system. Other nitrogen analogs of the above-mentioned aza derivatives can be easily thought of by those of ordinary skill in the art, and all such analogs are determined to be included in the terms described herein.

[0076] In the present disclosure, unless otherwise defined, when any one of the terms in the group consisting of substituted alkyl, substituted cycloalkyl, substituted heteroalkyl, substituted heterocyclyl, substituted aralkyl, substituted alkoxy, substituted aryloxy, substituted alkenyl, substituted alkynyl, substituted aryl, substituted heteroaryl, substituted alkylsilyl, substituted arylsilyl, substituted alkylgermanyl, substituted arylgermanyl, substituted amino, substituted acyl, substituted carbonyl, substituted carboxylic acid, Substituted ester groups, substituted sulfinyl groups, substituted sulfonyl groups, substituted phosphino groups refer to any one of alkyl groups, cycloalkyl groups, heteroalkyl groups, heterocyclic groups, aralkyl groups, alkoxy groups, aryloxy groups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, alkylsilyl groups, arylsilyl groups, alkylgermanyl groups, arylgermanyl groups, amino groups, acyl groups, carbonyl groups, carboxyl groups, ester groups, sulfinyl groups, sulfonyl groups and phosphino groups, which may be substituted by one or more of deuterium, halogen groups, unsubstituted alkyl groups having 1 to 20 carbon atoms, unsubstituted alkyl groups having 1 to 20 carbon atoms, Cycloalkyl having 3-20 ring carbon atoms, unsubstituted heteroalkyl having 1-20 carbon atoms, unsubstituted heterocyclyl having 3-20 ring atoms, unsubstituted aralkyl having 7-30 carbon atoms, unsubstituted alkoxy having 1-20 carbon atoms, unsubstituted aryloxy having 6-30 carbon atoms, unsubstituted alkenyl having 2-20 carbon atoms, unsubstituted alkynyl having 2-20 carbon atoms, unsubstituted aryl having 6-30 carbon atoms , unsubstituted heteroaryl having 3 to 30 carbon atoms, unsubstituted alkylsilyl having 3 to 20 carbon atoms, unsubstituted arylsilyl having 6 to 20 carbon atoms, unsubstituted alkylgermanyl having 3 to 20 carbon atoms, unsubstituted arylgermanyl having 6 to 20 carbon atoms, unsubstituted amino having 0 to 20 carbon atoms, acyl, carbonyl, carboxylic acid, ester, cyano, isocyano, hydroxyl, mercapto, sulfinyl, sulfonyl, phosphino and combinations thereof.

[0077] It should be understood that when describing a molecular fragment as a substituent or otherwise attached to another moiety, its name can be written according to whether it is a fragment (e.g., phenyl, phenylene, naphthyl, dibenzofuranyl) or according to whether it is a whole molecule (e.g., benzene, naphthalene, dibenzofuran). As used herein, these different ways of specifying a substituent or attaching a fragment are considered equivalent.

[0078] In the compounds mentioned in this disclosure, hydrogen atoms may be partially or completely replaced by deuterium. Other atoms such as carbon and nitrogen may also be replaced by their other stable isotopes. The replacement of other stable isotopes in the compounds may be preferred because it enhances the efficiency and stability of the device.

[0079] In the compounds mentioned in the present disclosure, polysubstitution refers to the range including disubstitution up to the maximum number of available substitutions. When a substituent in the compounds mentioned in the present disclosure represents polysubstitution (including disubstitution, trisubstitution, tetrasubstitution, etc.), it means that the substituent can exist in multiple available substitution positions on its connection structure, and the substituent existing in multiple available substitution positions can be the same structure or different structures.

[0080] In the compounds mentioned in the present disclosure, unless clearly defined, for example, adjacent substituents can be optionally connected to form a ring, otherwise adjacent substituents in the compound cannot be connected to form a ring. In the compounds mentioned in the present disclosure, adjacent substituents can be optionally connected to form a ring, including both the situation where adjacent substituents can be connected to form a ring and the situation where adjacent substituents are not connected to form a ring. When adjacent substituents can be optionally connected to form a ring, the formed ring can be a monocyclic or polycyclic ring (including spirocyclic, bridged ring, condensed ring, etc.), as well as an alicyclic, heteroalicyclic, aromatic or heteroaromatic ring. In this statement, adjacent substituents can refer to substituents bonded to the same atom, substituents bonded to carbon atoms directly bonded to each other, or substituents bonded to carbon atoms further away. Preferably, adjacent substituents refer to substituents bonded to the same carbon atom and substituents bonded to carbon atoms directly bonded to each other.

[0081] The expression that adjacent substituents can be optionally linked to form a ring is also intended to be taken to mean that two substituents bonded to the same carbon atom are linked to each other by a chemical bond to form a ring, which can be exemplified by the following formula:

[0082]

[0083] The expression that adjacent substituents can be optionally linked to form a ring is also intended to be taken to mean that two substituents bonded to carbon atoms directly bonded to each other are linked to each other by a chemical bond to form a ring, which can be exemplified by the following formula:

[0084]

[0085] The expression that adjacent substituents can be optionally linked to form a ring is also intended to be taken to mean that two substituents bonded to a further distant carbon atom are linked to each other by a chemical bond to form a ring, which can be exemplified by the following formula:

[0086]

[0087] Furthermore, the statement that adjacent substituents can optionally be linked to form a ring is also intended to be taken to mean that, in the case where one of the two adjacent substituents represents hydrogen, the second substituent is bonded at the position to which the hydrogen atom is bonded, thereby forming a ring. This is exemplified by the following formula:

[0088]

[0089] According to one embodiment of the present invention, an organic electroluminescent device is disclosed, comprising:

[0090] anode,

[0091] cathode,

[0092] and an organic layer disposed between the anode and the cathode, the organic layer comprising at least a first metal complex and a first compound;

[0093] Wherein, the first metal complex comprises a metal M and a ligand L coordinated with the metal M. a , L a Having a structure represented by Formula 1:

[0094]

[0095] in,

[0096] The metal M is selected from metals with a relative atomic mass greater than 40;

[0097] Cy is selected, at each occurrence, identically or differently, from substituted or unsubstituted aryl having 5 to 24 ring atoms, or substituted or unsubstituted heteroaryl having 5 to 24 ring atoms, or a combination thereof;

[0098] The Cy is connected to the metal M via G1;

[0099] G1 and G2 are identically or differently selected at each occurrence from a single bond, O or S;

[0100] X1-X8 are selected from C, CR in the same or different manner at each occurrence x Or N; and at least one of X1-X4 is selected from C and connected to Cy; at least one of X1-X4 is selected from C or N and connected to the metal M through G2;

[0101] X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1 at each occurrence; when two R1s are present at the same time, the two R1s are the same or different;

[0102] R xand R1, at each occurrence, is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0103] At least one of X1-X8 is CR x , and the R x is selected from cyano or fluorine;

[0104] Adjacent substituents R1, R x can optionally be linked to form a ring;

[0105] Wherein, the first compound has a structure represented by Formula 2:

[0106]

[0107] in,

[0108] W is selected from C, CR, w or N;

[0109] Each time V1-V4 appears, they are selected from C, CR v or N, and one of V1-V4 is selected from C and connected to L2;

[0110] V5-V 12 Each occurrence is selected from CR v or N;

[0111] L, L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms, or a combination thereof;

[0112] Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof;

[0113] R w and R v The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0114] Adjacent substituent R w can be optionally linked into a ring;

[0115] Adjacent substituent R v Can optionally be linked to form a ring.

[0116] In this context, “adjacent substituents R1, R x "can be optionally connected to form a ring" is intended to mean that adjacent groups of substituents, for example, between two substituents R1, between two substituents R x Between the substituents R1 and R x Any one or more of these substituent groups may be connected to form a ring. Obviously, none of these substituent groups may be connected to form a ring.

[0117] In this context, “the adjacent substituent R w "can optionally be linked to form a ring" is intended to mean that adjacent groups of substituents, for example, two substituents R w Any one or more of the substituent groups formed between them can be connected to form a ring. Obviously, these substituents can also not be connected to form a ring.

[0118] In this context, “the adjacent substituent R v "can optionally be linked to form a ring" is intended to mean that adjacent groups of substituents, for example, two substituents R v Any one or more of the substituent groups can be connected to form a ring. Obviously, these substituents can also not be connected to form a ring.

[0119] According to one embodiment of the present invention, wherein the G1 is selected from a single bond, the Cy is connected to the metal M through G1 to form a metal-carbon bond or a metal-nitrogen bond.

[0120] According to one embodiment of the present invention, when X1, X2, X3 or X4 connected to G2 is selected from N, G2 is selected from a single bond, and X1, X2, X3 or X4 is connected to the metal M through G2 to form a metal-nitrogen bond; when X1, X2, X3 or X4 connected to G2 is selected from C, G2 is selected from a single bond, O or S, and X1, X2, X3 or X4 is connected to the metal M through G2.

[0121] According to one embodiment of the present invention, the first compound has a structure represented by Formula 2-1:

[0122]

[0123] in,

[0124] W is selected from CR in the same or different way at each occurrence w or N;

[0125] Each time V1-V4 appears, they are selected from C, CR v or N, and one of V1-V4 is selected from C and connected to L2;

[0126] V5-V 12 Each occurrence is the same or different selection from CR v or N;

[0127] L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms, or a combination thereof;

[0128] Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof;

[0129] R w and R v The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0130] Adjacent substituent R w can be optionally linked into a ring;

[0131] Adjacent substituent R v Can optionally be linked to form a ring.

[0132] According to one embodiment of the present invention, W is selected from CR in the same or different manner each time it appears. w .

[0133] According to one embodiment of the present invention, V1-V 12 Each occurrence is selected from C or CR, either identically or differently v .

[0134] According to an embodiment of the present invention, V2 is C and is connected to L2.

[0135] According to one embodiment of the present invention, Ar1 is identically or differently selected from a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 20 carbon atoms, or a combination thereof each time it occurs.

[0136] According to one embodiment of the present invention, wherein Ar1 appears each time and is identically or differently selected from the group consisting of: substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted fluorenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothiophene, and combinations thereof.

[0137] According to one embodiment of the present invention, L, L1 and L2 are selected from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms, or a combination thereof, the same or different when each occurs.

[0138] According to one embodiment of the present invention, L, L1 and L2 are selected from a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted biphenylene, a substituted or unsubstituted naphthylene, a substituted or unsubstituted pyridylene, or a combination thereof, the same or different when they appear each time.

[0139] According to one embodiment of the present invention, L, L1 and L2 are selected from a single bond or a phenylene group the same or different each time they appear.

[0140] According to one embodiment of the present invention, R w and R v Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted alkenyl having 2-20 carbon atoms, substituted or unsubstituted aryl having 6-20 carbon atoms, substituted or unsubstituted heteroaryl having 3-20 carbon atoms, cyano, and combinations thereof.

[0141] According to one embodiment of the present invention, R w and R vThe group consisting of hydrogen, deuterium, fluorine, substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted fluorenyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothiophenyl, cyano, and combinations thereof is selected at each occurrence, the same or different.

[0142] According to an embodiment of the present invention, at least one hydrogen in the first compound is replaced by deuterium.

[0143] According to one embodiment of the present invention, hydrogen in the first compound can be partially or completely replaced by deuterium.

[0144] According to an embodiment of the present invention, the deuterium substitution rate of the first compound is 5%-100%.

[0145] According to an embodiment of the present invention, the deuterium substitution rate of the first compound is 30%-100%.

[0146] According to an embodiment of the present invention, the deuterium substitution rate of the first compound is 50%-100%.

[0147] In this embodiment, the "deuteration rate of the compound" refers to the percentage of the number of deuterium in the compound structure to the total number of hydrogen and deuterium in the compound structure.

[0148] According to one embodiment of the present invention, the first compound is selected from the group consisting of the above-mentioned compounds 2-1 to 2-119, and the specific details of the compounds 2-1 to 2-119 are as shown in claim 9.

[0149] According to one embodiment of the present invention, the hydrogen in compounds 2-1 to 2-119 can be partially or completely replaced by deuterium.

[0150] According to one embodiment of the present invention, in the first metal complex, Cy appears each time in the same or different manner and is selected from any structure in the group consisting of:

[0151]

[0152] Each occurrence of R is the same or different, indicating mono-substitution, poly-substitution or no substitution; when multiple R are present in any structure, the R are the same or different;

[0153] R is selected, at each occurrence, identically or differently, from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0154] Adjacent substituents R can optionally be linked to form a ring;

[0155] Wherein, “#” indicates the position where Cy is connected to the metal M through G1;

[0156] “*” indicates the position where Cy is connected to any one of X1, X2, X3 or X4 in Formula 1.

[0157] According to one embodiment of the present invention, Cy is

[0158] According to one embodiment of the present invention, in the first metal complex, X1-X8 each time appears, the same or different is selected from C or CR x .

[0159] According to one embodiment of the present invention, in the first metal complex, at least one of X1-X4 is selected from CR x , the R x is deuterium, and / or at least one of R is deuterium.

[0160] According to one embodiment of the present invention, the organic electroluminescent device, wherein the ligand L a Having a structure represented by Formula 1a:

[0161]

[0162] in,

[0163] X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1 at each occurrence; when two R1s are present at the same time, the two R1s are the same or different;

[0164] Each occurrence of X3-X8 is the same or different selection from CR x or N;

[0165] R, when present at each occurrence, is identical or different and represents mono-substitution, poly-substitution, or no substitution;

[0166] R x , R and R1 are each identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted substituted or unsubstituted aryl groups having 6-30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3-20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6-20 carbon atoms, substituted or unsubstituted alkylgermanyl groups having 3-20 carbon atoms, substituted or unsubstituted arylgermanyl groups having 6-20 carbon atoms, substituted or unsubstituted amino groups having 0-20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, cyano groups, isocyano groups, hydroxyl groups, mercapto groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;

[0167] Adjacent substituent R x , R1, R can be optionally linked to form a ring.

[0168] In this context, “the adjacent substituent R x , R1, R can be optionally connected to form a ring", is intended to mean that adjacent substituent groups, for example, between two substituents R1, two substituents R x Between the substituents R1 and R x between two substituents R, between substituents R1 and R, between substituents R and R x Any one or more of these substituent groups may be connected to form a ring. Obviously, none of these substituent groups may be connected to form a ring.

[0169] According to one embodiment of the present invention, in the first metal complex, at least one of X3-X4 is selected from CR x , the R x It's deuterium.

[0170] According to one embodiment of the present invention, in the first metal complex, at least one R is deuterium.

[0171] According to one embodiment of the present invention, the first metal complex has M(L a ) m (L b ) n (L c ) q The general formula of

[0172] L a , L b and L c are the first, second and third ligands coordinated to the metal M, and L c and the L a or L b are the same or different; where L a , L b and L c can optionally be linked to form a multidentate ligand;

[0173] m is selected from 1, 2 or 3, n is selected from 0, 1 or 2, q is selected from 0, 1 or 2, m+n+q is equal to the oxidation state of metal M; when m is greater than or equal to 2, multiple L a The same or different; when n is equal to 2, the two L b The same or different; when q is equal to 2, the two L c Same or different;

[0174] L b and L c Each occurrence is identically or differently selected from any one of the following groups:

[0175]

[0176] in,

[0177] X b Each occurrence is identically or differently selected from the group consisting of: O, S, Se, NR N1 , CR C1 R C2 ;

[0178] R a and R b Each occurrence is the same or different and indicates mono-, poly-, or unsubstituted;

[0179] R a , R b , R c , R N1 , R C1 and R C2 The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0180] Adjacent substituent R a , R b , R c , R N1 , R C1 and R C2 Can optionally be linked to form a ring.

[0181] In this context, “the adjacent substituent R a , R b , R c , R N1 , R C1 and R C2 "can optionally be linked to form a ring" is intended to mean that adjacent groups of substituents, for example, two substituents R a Between the two substituents R b Between, the substituent R a and R b Between, the substituent R a and R c Between, the substituent R b and R c Between, the substituent R a and R N1 Between, the substituent Rb and R N1 Between, the substituent R a and R C1 Between, the substituent R a and R C2 Between, the substituent R b and R C1 Between, the substituent R b and R C2 Between, and R C1 and R C2 Any one or more of these substituent groups may be linked to form a ring.

[0182] For example, The adjacent substituent R a , R b can be optionally linked to form a ring, wherein when R a When optionally linked to form a ring, Can form but not limited to Obviously, these substituents may not be connected to form a ring.

[0183] According to one embodiment of the present invention, in the metal complex, the metal M is selected from the group consisting of Cu, Ag, Au, Ru, Rh, Pd, Os, Ir and Pt each time it appears, either identically or differently;

[0184] According to one embodiment of the present invention, in the metal complex, the metal M is selected from Pt or Ir the same or differently each time it appears.

[0185] According to one embodiment of the present invention, the first metal complex has Ir(L a ) m (L b ) 3-m The general structure of the formula 4 is:

[0186]

[0187] in,

[0188] m is selected from 1, 2 or 3; when m is selected from 1, two L b The same or different; when m is selected from 2 or 3, multiple L a Same or different;

[0189] X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1; when two R1s are present at the same time, the two R1s are the same or different;

[0190] U1-U8 are selected from CR in the same or different way each time they appear.u or N;

[0191] X3-X8 are selected from CR in the same or different way each time they appear x or N;

[0192] Y1-Y4 are selected from CR or N at each occurrence, the same or different;

[0193] R, R x , R1 and R u The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof;

[0194] At least one of X3-X8 is selected from CR x , and the R x is selected from cyano or fluorine;

[0195] Adjacent substituent R x , R1, R can be optionally connected to form a ring;

[0196] Adjacent substituent R u Can optionally be linked to form a ring.

[0197] In this context, “the adjacent substituent R x , R1, R can be optionally connected to form a ring", is intended to mean that adjacent substituent groups, for example, between two substituents R1, two substituents R x Between the substituents R1 and R x between two substituents R, between substituents R1 and R, between substituents R and R xAny one or more of these substituent groups may be connected to form a ring. Obviously, none of these substituent groups may be connected to form a ring.

[0198] In this context, “the adjacent substituent R u "can optionally be linked to form a ring" is intended to mean that adjacent groups of substituents, for example, substituents R u and the substituent R u Any one or more of these substituents may be connected to form a ring. Obviously, none of these substituents may be connected to form a ring.

[0199] According to one embodiment of the present invention, m is selected from 1.

[0200] According to one embodiment of the present invention, in the first metal complex, X is selected from O, S or Se the same or different each time it appears.

[0201] According to one embodiment of the present invention, X is selected from O or S.

[0202] According to one embodiment of the present invention, X is selected from O.

[0203] According to one embodiment of the present invention, in the first metal complex, at least one of Y1-Y4 is selected from CR, and each time R appears, it is the same or different and is selected from the group consisting of: deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, and combinations thereof.

[0204] According to one embodiment of the present invention, in the first metal complex, at least one of Y1-Y4 is selected from CR, and each time R appears, it is selected from the group consisting of: deuterium, fluorine, substituted or unsubstituted alkyl having 1-6 carbon atoms, substituted or unsubstituted cycloalkyl having 3-6 ring carbon atoms, substituted or unsubstituted aryl having 6-12 carbon atoms, substituted or unsubstituted heteroaryl having 6-18 carbon atoms, and combinations thereof.

[0205] According to one embodiment of the present invention, in the first metal complex, Y2 and / or Y3 are selected from CR, and each occurrence of R is identically or differently selected from the group consisting of: a substituted or unsubstituted alkyl group having 3-6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3-6 ring carbon atoms, and a combination thereof.

[0206] According to one embodiment of the present invention, in the first metal complex, X3-X8 each time appears, the same or different selected from CRx ; said R x Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl having 3 to 20 carbon atoms, cyano, and combinations thereof; and at least one of X3 to X8 is selected from CR x , the R x Selected from cyano or fluorine.

[0207] According to one embodiment of the present invention, in the first metal complex, at least two of X3-X8 are selected from CR x , and one of the R x is selected from cyano or fluorine; the other R x selected from the group consisting of deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1-20 carbon atoms, substituted or unsubstituted heterocyclyl having 3-20 ring atoms, substituted or unsubstituted aralkyl having 7-30 carbon atoms, substituted or unsubstituted alkoxy having 1-20 carbon atoms, substituted or unsubstituted aryloxy having 6-30 carbon atoms, substituted or unsubstituted alkenyl having 2-20 carbon atoms, substituted or unsubstituted cycloalkyl ... atom, an alkynyl group having 6 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and a combination thereof having 0 to 20 carbon atoms.

[0208] According to one embodiment of the present invention, in the first metal complex, at least two of X3-X8 are selected from CR x , and one of the R x is selected from cyano or fluorine; the other R xSelected from the group consisting of deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, and combinations thereof.

[0209] According to one embodiment of the present invention, in the first metal complex, at least two of X3-X8 are selected from CR x , and one of the R x is selected from cyano or fluorine; the other R x Selected from the group consisting of deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, and combinations thereof.

[0210] According to one embodiment of the present invention, in the first metal complex, at least two of X3-X8 are selected from CR x , and one of the R x is selected from cyano; another of said R x Selected from the group consisting of deuterium, halogen, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, and combinations thereof.

[0211] According to one embodiment of the present invention, in the first metal complex, X7 is selected from CR x , the R x is cyano or F; X8 is selected from CR x , the R x is selected from deuterium, halogen, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof.

[0212] According to one embodiment of the present invention, at least one of X5-X8 is CR x , and the R x Selected from cyano or fluorine.

[0213] According to one embodiment of the present invention, at least one of X7-X8 is CR x , and the R x Selected from cyano or fluorine.

[0214] According to one embodiment of the present invention, X7 is CR x , and the R x Selected from cyano.

[0215] According to one embodiment of the present invention, at least one of X3-X4 is selected from CR x , the Rx is deuterium; and / or at least one of Y1-Y4 is selected from CR, wherein R is deuterium.

[0216] According to one embodiment of the present invention, X4 is selected from CR x , the R x is deuterium; and / or at least one of Y1, Y4 is selected from CR, wherein R is deuterium.

[0217] According to one embodiment of the present invention, in the first metal complex, wherein U1-U8 each time appears, the same or different selected from CR u , and the R u Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl having 3-20 carbon atoms, substituted or unsubstituted alkylgermanyl having 3-20 carbon atoms, and combinations thereof.

[0218] According to one embodiment of the present invention, in the first metal complex, R u Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, fluorine, substituted or unsubstituted alkyl having 1 to 6 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 6 ring carbon atoms, substituted or unsubstituted aryl having 6 to 12 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 12 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 12 carbon atoms, substituted or unsubstituted alkylgermanyl having 3 to 12 carbon atoms, and combinations thereof.

[0219] According to one embodiment of the present invention, in the first metal complex, R u Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, fluorine, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, neopentyl, tert-butyl, cyclopentyl, cyclohexyl, deuterated methyl, deuterated ethyl, deuterated propyl, deuterated isopropyl, deuterated n-butyl, deuterated isobutyl, deuterated neopentyl, deuterated tert-butyl, deuterated cyclopentyl, deuterated cyclohexyl, phenyl, pyridyl, trimethylsilyl, trimethylgermanyl, and combinations thereof.

[0220] According to one embodiment of the present invention, in the first metal complex, at least one of U1-U8 is selected from CR u , and the R uEach occurrence is identically or differently selected from the group consisting of deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl having 3-20 carbon atoms, substituted or unsubstituted alkylgermanyl having 3-20 carbon atoms, and combinations thereof.

[0221] According to one embodiment of the present invention, in the first metal complex, at least one of U2, U3, U6, and U7 is selected from CR u , and the R u Each occurrence is identically or differently selected from the group consisting of deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, substituted or unsubstituted alkylsilyl having 3-20 carbon atoms, substituted or unsubstituted alkylgermanyl having 3-20 carbon atoms, and combinations thereof.

[0222] According to one embodiment of the present invention, the first metal complex is selected from the group consisting of metal complexes GD-1-1 to GD-1-100, GD-2-1 to GD-2-130, and GD-3-1 to GD-3-79, and the structures of GD-1-1 to GD-1-100, GD-2-1 to GD-2-130, and GD-3-1 to GD-3-79 are as shown in claim 17.

[0223] According to one embodiment of the present invention, the organic layer further comprises a second compound, which comprises at least one chemical group selected from the group consisting of benzene, pyridine, pyrimidine, triazine, carbazole, azacarbazole, indolecarbazole, dibenzothiophene, azadibenzothiophene, dibenzofuran, azadibenzofuran, dibenzoselenophene, triphenylene, azatriphenylene, fluorene, silafluorene, naphthalene, quinoline, isoquinoline, quinazoline, quinoxaline, phenanthrene, azaphenanthrene, and combinations thereof.

[0224] According to one embodiment of the present invention, the second compound has a structure represented by Formula 3:

[0225]

[0226] in,

[0227] Each occurrence of E1-E6 is selected from C, CR eor N, and at least two of E1-E6 are N, at least one of E1-E6 is C, and they are connected to formula B;

[0228]

[0229] in,

[0230] Q is the same or different each time it appears and is selected from O, S, Se, N, NR Q , CR Q R Q ,SiR Q R Q ,GeR Q R Q and R Q C=CR Q When there are two R Q When two R Q Can be the same or different;

[0231] p is 0 or 1; r is 0 or 1;

[0232] When Q is selected from N, p is 0 and r is 1;

[0233] When Q is selected from O, S, Se, NR Q , CR Q R Q ,SiR Q R Q ,GeR Q R Q and R Q C=CR Q When the group is composed, p is 1 and r is 0;

[0234] L3 is identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms, or a combination thereof;

[0235] Q1-Q8 are selected from C, CR in the same or different manner at each occurrence q or N;

[0236] R e , R Q and R qEach occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted Alkynyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylgermanyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amino groups having 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, cyano groups, isocyano groups, hydroxyl groups, mercapto groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;

[0237] “*” represents the connection position between Formula B and Formula 3;

[0238] Adjacent substituent R e , R Q , R q Can optionally be linked to form a ring.

[0239] In this context, “the adjacent substituent R e , R Q , R q "can optionally be linked to form a ring" is intended to mean that adjacent groups of substituents, for example, two substituents R e Between the two substituents R Q Between the two substituents R q Between, the substituent R e and R Q Between, the substituent R q and R Q Between, the substituent R q and R e Any one or more of these substituent groups may be connected to form a ring. Obviously, none of these substituent groups may be connected to form a ring.

[0240] According to one embodiment of the present invention, the second organic compound has a structure represented by Formula 3-1 or Formula 3-2:

[0241]

[0242] in,

[0243] Q is selected, at each occurrence, identically or differently, from the group consisting of O, S and Se;

[0244] In formula 3-1, Q1-Q8 are selected from C, CR q or N, and one of them is C and connected to L3;

[0245] L3 is identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms, or a combination thereof;

[0246] In Formula 3-2, Q1-Q8 are selected from CR q or N;

[0247] Each time T1-T5 appears, they are selected from C, CR T or N, and one of them is C, and the structure connected;

[0248] Ar3 and Ar4 are identically or differently selected at each occurrence from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, or combinations thereof;

[0249] R q and R TEach occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted Alkynyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylgermanyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amino groups having 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, cyano groups, isocyano groups, hydroxyl groups, mercapto groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof;

[0250] Adjacent substituent R T can be optionally linked into a ring;

[0251] Adjacent substituent R q Can optionally be linked to form a ring.

[0252] In this embodiment, "*" indicates the structure A location that connects to any of T1-T5.

[0253] In this context, “the adjacent substituent R T can be optionally connected to form a ring, "adjacent substituents R q "can optionally be linked to form a ring" is intended to mean that adjacent groups of substituents, for example, two substituents R T Between the two substituents R q Any one or more of these substituent groups may be connected to form a ring. Obviously, none of these substituent groups may be connected to form a ring.

[0254] According to one embodiment of the present invention, the second compound has a structure represented by Formula 3-2.

[0255] According to one embodiment of the present invention, in Formula 3-2, the T4 or T5 is selected from C and has a structure connected.

[0256] According to one embodiment of the present invention, at least one of T1-T5 is selected from CRT , the R T Each occurrence is identically or differently selected from the group consisting of substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, and combinations thereof.

[0257] According to one embodiment of the present invention, T3 is selected from CR T , the R T and is selected, identically or differently on each occurrence, from substituted or unsubstituted aryl having 6 to 30 carbon atoms.

[0258] According to one embodiment of the present invention, T3 is selected from CR T , the R T is selected from substituted or unsubstituted phenyl.

[0259] According to one embodiment of the present invention, the second compound is selected from the group consisting of compound H-1 to compound H-200, and the structures of compound H-1 to compound H-200 are as shown in claim 21.

[0260] According to one embodiment of the present invention, hydrogen in the compounds H-1 to H-200 can be partially or completely replaced by deuterium.

[0261] According to an embodiment of the present invention, the organic layer is a light-emitting layer.

[0262] According to one embodiment of the present invention, the organic electroluminescent device further comprises a hole injection layer, which may be a single material functional layer or a functional layer comprising multiple materials, wherein the multiple materials comprised are most commonly hole transport materials doped with a certain proportion of p-type conductive doping materials. Common p-type doping materials include:

[0263]

[0264] According to an embodiment of the present invention, the organic layer is a light-emitting layer, in which the first metal complex is doped in the first compound and the second compound, and the weight of the metal complex accounts for 1% to 30% of the total weight of the light-emitting layer.

[0265] According to another embodiment of the present invention, the weight of the first metal complex accounts for 3%-13% of the total weight of the light-emitting layer.

[0266] According to one embodiment of the present invention, the first compound is a first host compound.

[0267] According to one embodiment of the present invention, the second compound is a second host compound.

[0268] According to another embodiment of the present invention, a composition is further disclosed, which includes the first metal complex having the structure of Formula 1 and the first compound having the structure of Formula 2.

[0269] According to another embodiment of the present invention, a composition is also disclosed, which comprises at least a first metal complex, a first host compound and a second host compound having a structure of Formula 3, Formula 3-1 or Formula 3-2; the first metal complex, the first host compound and the second host compound are as described in any of the above embodiments. According to another embodiment of the present invention, an organic layer is also disclosed, which comprises the composition described in the above embodiments.

[0270] According to another embodiment of the present invention, a display component is also disclosed, which includes the organic electroluminescent device described in any of the above embodiments, or includes the organic layer described in the above embodiments.

[0271] According to another embodiment of the present invention, an electronic device is also disclosed, which includes the organic electroluminescent device described in any of the above embodiments, or includes the organic layer described in the above embodiments, or includes the display component described in the above embodiments.

[0272] Combination with other materials

[0273] The materials for specific layers in the organic light-emitting device described in the present invention can be used in combination with various other materials present in the device. The combination of these materials is described in detail in paragraphs 0132-0161 of U.S. Patent Application US2016 / 0359122A1, the entire contents of which are incorporated herein by reference. The materials described or mentioned therein are non-limiting examples of materials that can be used in combination with the compounds disclosed herein, and those skilled in the art can easily consult the literature to identify other materials that can be used in combination.

[0274] The materials described herein as specific layers that can be used in organic light-emitting devices can be used in combination with a variety of other materials present in the device. For example, the compounds disclosed herein can be used in combination with a variety of luminescent dopants, hosts, transport layers, barrier layers, injection layers, electrodes, and other layers that may be present. The combination of these materials is described in detail in paragraphs 0080-0101 of U.S. Patent Application US2015 / 0349273A1, the entire contents of which are incorporated herein by reference. The materials described or mentioned therein are non-limiting examples of materials that can be used in combination with the compounds disclosed herein, and those skilled in the art can easily consult the literature to identify other materials that can be used in combination.

[0275] The first metal complex, the first compound and the second compound used in the present invention can be easily obtained by referring to the preparation method in the prior art or the applicant's prior application. For example, the first metal complex of the present invention can be prepared by referring to US20230189629A1, the first compound of the present invention can be prepared by referring to CN103347857A, CN116134033A, CN117222638A, WO2023163381A1, WO2024128540A1, and the second compound of the present invention can be prepared by referring to CN114621199A, CN110540536A, CN117327056A, CN118772127A, WO2023200282A1, and the preparation method thereof will not be repeated here. The documents listed above are only exemplary, and those skilled in the art can easily obtain other documents.

[0276] The preparation method of the electroluminescent device is not limited. The preparation method of the following embodiment is only an example and should not be construed as limiting. A person skilled in the art can reasonably improve the preparation method of the following embodiment based on the prior art. For example, the ratio of various materials in the light-emitting layer is not particularly limited. A person skilled in the art can reasonably select within a certain range based on the prior art. For example, based on the total weight of the light-emitting layer material, the main material can account for 80%-99%, and the light-emitting material can account for 1%-20%; or the main material can account for 90%-99%, and the light-emitting material can account for 1%-10%; or the main material can account for 94%-99%, and the light-emitting material can account for 1%-6%. In addition, the main material can be one or two materials, and the ratio of the two main materials to the main material can be 99:1 to 1:99; or, the ratio can be 80:20 to 20:80; or, the ratio can be 60:40 to 40:60. In the embodiments of the device, the characteristics of the device are also tested using conventional equipment in the field (including but not limited to the vapor deposition machine produced by Angstrom Engineering, the optical testing system and life testing system produced by Suzhou Fusida, the ellipsometer produced by Beijing Liangtuo, etc.) using methods familiar to those skilled in the art.

[0277] Device Embodiment

[0278] Device Example 1

[0279] First, the glass substrate with an 80nm thick indium tin oxide (ITO) anode was cleaned and then treated with oxygen plasma and UV ozone. After treatment, the substrate was dried in a glove box to remove moisture. The substrate was then mounted on a substrate holder and loaded into a vacuum chamber. The organic layers specified below were placed in a vacuum of approximately 10 -8Compound HT and compound HT1 were co-deposited as a hole injection layer (HIL, weight ratio 97:3) with a thickness of Compound HT was used as a hole transport layer (HTL) with a thickness of Compound C-1 was used as an electron blocking layer (EBL) with a thickness of Then the metal complex GD-1-72 was doped in compound 2-1 and compound H-106, and co-evaporated to form an emitting layer (EML, weight ratio 6:66:28) with a thickness of Compound H-1 was used as the hole blocking layer (HBL) with a thickness of On the hole blocking layer, compound ET and 8-hydroxyquinoline-lithium (Liq) were co-evaporated as an electron transport layer (ETL, weight ratio 40:60) with a thickness of Finally, 1 nm thick 8-hydroxyquinoline-lithium (Liq) was evaporated as an electron injection layer, and 120 nm of aluminum was evaporated as a cathode. The device was then transferred back to the glove box and encapsulated with a glass lid to complete the device.

[0280] Device Example 2

[0281] The preparation of device example 2 was the same as that of device example 1, except that metal complex GD-1-65 was used instead of metal complex GD-1-72 in the emission layer (EML), and compound 2-1:compound H-106:GD-1-65=56:38:6.

[0282] Device Example 3

[0283] Device Example 3 was prepared in the same manner as Device Example 2, except that Compound 2-69 was used instead of Compound 2-1 in the emissive layer (EML).

[0284] Device Example 4

[0285] Device Example 4 was prepared the same as Device Example 2, except that Compound H-101 was used instead of Compound H-106 in the emissive layer (EML).

[0286] Device Comparison Example 1

[0287] The preparation of device Comparative Example 1 was the same as that of device Example 1, except that compound C-1 was used instead of compound 2-1 in the emission layer (EML).

[0288] Device Comparison Example 2

[0289] The preparation of device Comparative Example 2 was the same as that of device Example 1, except that the metal complex GD-A was used in the light emitting layer (EML) instead of the metal complex GD-1-72.

[0290] Device Comparison Example 3

[0291] The preparation of device Comparative Example 3 was the same as that of device Comparative Example 2, except that compound C-1 was used instead of compound 2-1 in the emission layer (EML).

[0292] The detailed device layer structure and thickness are shown in the table below. For layers using more than one material, different compounds are doped in the weight ratios recorded.

[0293] Table 1 Device structures of device embodiments 1 to 4 and comparative examples 1 to 3

[0294]

[0295]

[0296] The material structure used in the device is shown below:

[0297]

[0298]

[0299] Table 2 shows that at 15 mA / cm 2 CIE data, driving voltage (Voltage), external quantum efficiency (EQE), current efficiency (CE) measured under constant current density; and at 80mA / cm 2 The device lifetime (LT95) measured under constant current density, wherein the device lifetime (LT95) is normalized based on the data of Comparative Example 1.

[0300] Table 2 Device data of Examples 1 to 4 and Comparative Examples 1 to 3

[0301]

[0302] discuss:

[0303] Example 1 is a device comprising a specific compound combination of the present invention (the first metal complex GD-1-72 and the first compound 2-1), and Comparative Example 1 is a device comprising a specific compound combination not of the present invention (the first compound C-1 not of the present invention and the first metal complex GD-1-72 of the present invention). It can be seen from the device data in Table 2 that the driving voltages of Example 1 and Comparative Example 1 are substantially equivalent. When the device efficiency (EQE and CE) of Comparative Example 1 is already at a very high level, the device efficiency of Example 1 is still further improved. More importantly, the device life of Example 1 is greatly improved by 2.07 times. This group of data proves that compared with Comparative Example 1, which uses a compound combination of a first compound not of the present invention and a first metal complex of the present invention, the device comprising the first compound of the specific formula 2 structure and the first metal complex of the present invention has better comprehensive performance, especially in terms of life, which has been unexpectedly significantly improved.

[0304] Comparative Example 2 is another type of device comprising a specific compound combination not of the present invention (the first compound 2-1 of the present invention and the first metal complex GD-A not of the present invention). As can be seen from the data in Table 2, compared with Comparative Example 2, Example 1 not only achieved a reduction in driving voltage (reduced by 0.6V), but also further improved device efficiency (EQE increased by 7.2%, CE increased by 13.5%), especially, the life span was greatly improved by 44.8%. This group of data proves that compared with the device using a compound combination of a first metal complex not of the present invention and the first compound of the present invention, the first metal complex selected in the present invention comprising a specific ligand of formula 1, and the device combined with the first compound of formula 2 of the present invention show unique advantages and have better overall performance.

[0305] Comparative Example 3 is another type of device comprising a non-specific compound combination of the present invention (non-first compound C-1 of the present invention and non-first metal complex GD-A of the present invention). As can be seen from the data in Table 2, compared with Comparative Example 3, Example 1 exhibits better comprehensive performance, not only further reducing the device voltage (reduced by 0.5V), but also improving the device efficiency (EQE increased by 6.8%, CE increased by 13.2%), especially the lifespan has also been greatly improved by 27%.

[0306] The above data proves from multiple aspects that the performance of the first compound with a specific structure of formula 2 and the first metal complex containing a ligand with a specific structure of formula 1 selected in the present invention are more matched. Therefore, the compound combination formed by them can improve the device performance to a greater extent, especially the device can achieve a very long life, which proves the unique advantages of the combination of the first compound and the first metal complex selected in the present invention.

[0307] Further, in Examples 2 to 4, more different devices comprising a combination of a first compound having a structure of Formula 2 and a first metal complex having a ligand having a structure of Formula 1 are provided within the scope of the present invention. The data show that they all have a lower driving voltage, extremely high efficiency and an ultra-long life. In particular, in Example 3, when the first compound of the present invention having deuterium substitution is used in combination with the first metal complex, the device life shows a surprising breakthrough improvement, even reaching more than 10 times that of Comparative Example 1, and has a wide range of application prospects and value.

[0308] In summary, the combination of the first metal complex having a ligand of the specific formula 1 and the first compound having the specific formula 2 selected in the present invention can reduce the device driving voltage, improve the device efficiency (EQE and CE), and greatly improve the device life, and can obtain more excellent device performance, which has unexpected unique advantages. This provides the industry with an excellent material combination in the organic layer of the device.

[0309] It should be understood that the various embodiments described herein are only examples and are not intended to limit the scope of the present invention. Therefore, as will be apparent to those skilled in the art, the claimed invention may include variations of the specific embodiments and preferred embodiments described herein. Many of the materials and structures described herein may be replaced with other materials and structures without departing from the spirit of the present invention. It should be understood that the various theories about why the present invention works are not intended to be restrictive.

Claims

1. An organic electroluminescent device, comprising: anode, cathode, and an organic layer disposed between the anode and the cathode, the organic layer comprising at least a first metal complex and a first compound; Wherein, the first metal complex comprises a metal M and a ligand L coordinated with the metal M. a , L a Having a structure represented by Formula 1: in, The metal M is selected from metals with a relative atomic mass greater than 40; Cy is selected, at each occurrence, identically or differently, from substituted or unsubstituted aryl having 5 to 24 ring atoms, or substituted or unsubstituted heteroaryl having 5 to 24 ring atoms, or a combination thereof; The Cy is connected to the metal M via G1; G1 and G2 are identically or differently selected at each occurrence from a single bond, O or S; X1-X8 are selected from C, CR in the same or different manner at each occurrence x Or N; and at least one of X1-X4 is selected from C and connected to Cy; at least one of X1-X4 is selected from C or N and connected to the metal M through G2; X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1 at each occurrence; when two R1s are present at the same time, the two R1s are the same or different; R x and R1, at each occurrence, is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; At least one of X1-X8 is CR x , and the R x is selected from cyano or fluorine; Adjacent substituents R1, R x can optionally be linked to form a ring; Wherein, the first compound has a structure represented by Formula 2: in, W is selected from C, CR, w or N; Each time V1-V4 appears, they are selected from C, CR v or N, and one of V1-V4 is selected from C and connected to L2; V5-V 12 Each occurrence is the same or different selection from CR v or N; L, L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms, or a combination thereof; Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof; R w and R v The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; Adjacent substituent R w can optionally be linked into a ring; Adjacent substituent R v Can optionally be linked to form a ring.

2. The organic electroluminescent device according to claim 1, wherein: The first compound has a structure represented by Formula 2-1: in, W is selected from CR in the same or different way at each occurrence w or N; Each time V1-V4 appears, they are selected from C, CR v or N, and one of V1-V4 is selected from C and connected to L2; V5-V 12 Each occurrence is the same or different selection from CR v or N; L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms, or a combination thereof; Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof; R w and R v The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; Adjacent substituent R w can optionally be linked into a ring; Adjacent substituent R v Can optionally be linked to form a ring.

3. The organic electroluminescent device according to claim 2, wherein: W is selected from CR in the same or different way at each occurrence w ; and / or V1-V 12 Each occurrence is selected from C or CR, either identically or differently v .

4. The organic electroluminescent device according to claim 1 or 2, wherein: V2 is selected from C and connected to L2.

5. The organic electroluminescent device according to claim 1 or 2, wherein: Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 20 carbon atoms, or a combination thereof; Preferably, Ar1 is selected from the group consisting of substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted fluorenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothiophene, and combinations thereof at each occurrence, the same or different.

6. The organic electroluminescent device according to claim 1, wherein: L, L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms, or a combination thereof; Preferably, L, L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted phenylene, a substituted or unsubstituted biphenylene, a substituted or unsubstituted naphthylene, a substituted or unsubstituted pyridylene, or a combination thereof; More preferably, L, L1 and L2 are identically or differently selected at each occurrence from a single bond or a phenylene group.

7. The organic electroluminescent device according to claim 1 or 2, wherein: R w and R v each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted aryl having 6 to 20 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 20 carbon atoms, cyano, and combinations thereof; Preferably, R w and R v The group consisting of hydrogen, deuterium, fluorine, substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted triphenylene, substituted or unsubstituted fluorenyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted dibenzofuranyl, substituted or unsubstituted dibenzothiophenyl, cyano, and combinations thereof is selected at each occurrence, the same or different.

8. The organic electroluminescent device according to any one of claims 1 to 7, wherein: At least one hydrogen in the first compound is replaced by deuterium; preferably, the deuteration rate of the first compound is 5%-100%; more preferably, the deuteration rate of the first compound is 30%-100%; more preferably, the deuteration rate of the first compound is 50%-100%.

9. The organic electroluminescent device according to claim 1, wherein: The first compound is selected from the group consisting of Compound 2-1 to Compound 2-119, and the structures of Compound 2-1 to Compound 2-119 are shown below: Optionally, hydrogen in the above compounds 2-1 to 2-119 can be partially or completely replaced by deuterium.

10. The organic electroluminescent device according to claim 1, wherein: Each occurrence of Cy is identically or differently selected from any structure in the group consisting of: Each occurrence of R is the same or different, indicating mono-substitution, poly-substitution or no substitution; when multiple R are present in any structure, the R are the same or different; R is selected, at each occurrence, identically or differently, from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; Adjacent substituents R can optionally be linked to form a ring; Preferably, Cy is selected from Wherein, "#" indicates the position where Cy is connected to the metal M through G1; "*" indicates the position where Cy is connected to any one of X1, X2, X3 or X4 in Formula 1.

11. The organic electroluminescent device according to claim 1 or 10, wherein: The first metal complex has M(L a ) m (L b ) n (L c ) q wherein the metal M is selected from the group consisting of Cu, Ag, Au, Ru, Rh, Pd, Os, Ir and Pt at each occurrence; preferably, the metal M is selected from Pt or Ir at each occurrence at the same or different times; L a , L b and L c are the first, second and third ligands coordinated to the metal M, and L c and the L a or L b are the same or different; where L a , L b and L c can optionally be linked to form a multidentate ligand; m is selected from 1, 2 or 3, n is selected from 0, 1 or 2, q is selected from 0, 1 or 2, m+n+q is equal to the oxidation state of metal M; when m is greater than or equal to 2, multiple L a The same or different; when n is equal to 2, the two L b The same or different; when q is equal to 2, the two L c Same or different; L b and L c Each occurrence is identically or differently selected from any one of the following groups: in, X b Each occurrence is identically or differently selected from the group consisting of: O, S, Se, NR N1 , CR C1 R C2 ; R a and R b Each occurrence is identical or different and indicates mono-, poly-, or unsubstituted; R a , R b , R c , R N1 , R C1 and R C2 The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; Adjacent substituent R a , R b , R c , R N1 , R C1 and R C2 Can optionally be linked to form a ring.

12. The organic electroluminescent device according to claim 1, wherein: The first metal complex has Ir(L a ) m (L b ) 3-m The general structure of the formula 4 is: in, m is selected from 1, 2 or 3; when m is selected from 1, two L b The same or different; when m is selected from 2 or 3, multiple L a The same or different; preferably, m is selected from 1; X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1; when two R1s are present at the same time, the two R1s are the same or different; U1-U8 are selected from CR in the same or different way each time they appear. u or N; X3-X8 are selected from CR in the same or different way each time they appear x or N; Y1-Y4 are selected from CR or N at each occurrence, the same or different; R, R x , R1 and R u The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; At least one of X3-X8 is selected from CR x , and the R x is selected from cyano or fluorine; Adjacent substituent R x , R1, R can be optionally connected to form a ring; Adjacent substituent R u Can optionally be linked to form a ring.

13. The organic electroluminescent device according to claim 12, wherein: At least one of Y1-Y4 is selected from CR, wherein each occurrence of R is identically or differently selected from the group consisting of: deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, and combinations thereof; Preferably, at least one of Y1-Y4 is selected from CR, and each occurrence of R is identically or differently selected from the group consisting of: deuterium, fluorine, substituted or unsubstituted alkyl having 1-6 carbon atoms, substituted or unsubstituted cycloalkyl having 3-6 ring carbon atoms, substituted or unsubstituted aryl having 6-12 carbon atoms, substituted or unsubstituted heteroaryl having 6-18 carbon atoms, and combinations thereof; More preferably, Y2 and / or Y3 are selected from CR, wherein each occurrence of R is identically or differently selected from the group consisting of substituted or unsubstituted alkyl having 3-6 carbon atoms, substituted or unsubstituted cycloalkyl having 3-6 ring carbon atoms, and combinations thereof.

14. The organic electroluminescent device according to claim 1 or 12, wherein: X is selected from O, S or Se at each occurrence, the same or different; X3-X8 is selected from CR at each occurrence, the same or different x ; said R x Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl having 3 to 20 carbon atoms, cyano, and combinations thereof; and at least one of X3 to X8 is selected from CR x , the R x is selected from cyano or fluorine; Preferably, at least two of X3-X8 are selected from CR x , and one of the R x is selected from cyano or fluorine; the other R x Selected from the group consisting of deuterium, halogen, substituted or unsubstituted alkyl having 1-20 carbon atoms, substituted or unsubstituted cycloalkyl having 3-20 ring carbon atoms, substituted or unsubstituted aryl having 6-30 carbon atoms, substituted or unsubstituted heteroaryl having 3-30 carbon atoms, and combinations thereof; Preferably, at least two of X3-X8 are selected from CR x , and one of the R x is selected from cyano; another of said R x Selected from the group consisting of deuterium, halogen, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, and combinations thereof; Preferably, at least one of X5-X8 is selected from CR x , and the R x is selected from cyano or fluorine; More preferably, X7 is selected from CR x , and the R x It's cyano.

15. The organic electroluminescent device according to claim 12, wherein: At least one of X3-X4 is selected from CR x , the R x is deuterium; and / or at least one of Y1-Y4 is selected from CR, wherein R is deuterium; Preferably, X4 is selected from CR x , the R x is deuterium; and / or at least one of Y1 and Y4 is selected from CR, wherein R is deuterium.

16. The organic electroluminescent device according to claim 1 or 12, wherein: U1-U8 are selected from CR in the same or different way each time they appear. u , and the R u each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted aryl having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl having 3 to 20 carbon atoms, and its combination; Preferably, R u each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, fluorine, substituted or unsubstituted alkyl having 1 to 6 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 6 ring carbon atoms, substituted or unsubstituted aryl having 6 to 12 carbon atoms, substituted or unsubstituted heteroaryl having 3 to 12 carbon atoms, substituted or unsubstituted alkylsilyl having 3 to 12 carbon atoms, substituted or unsubstituted alkylgermanyl having 3 to 12 carbon atoms, and combinations thereof; More preferably, R u Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, fluorine, methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, neopentyl, tert-butyl, cyclopentyl, cyclohexyl, deuterated methyl, deuterated ethyl, deuterated propyl, deuterated isopropyl, deuterated n-butyl, deuterated isobutyl, deuterated neopentyl, deuterated tert-butyl, deuterated cyclopentyl, deuterated cyclohexyl, phenyl, pyridyl, trimethylsilyl, trimethylgermanyl, and combinations thereof.

17. The organic electroluminescent device according to claim 1, wherein: The first metal complex is selected from the group consisting of metal complexes GD-1-1 to GD-1-100, GD-2-1 to GD-2-130, and GD-3-1 to GD-3-79, and the structures of GD-1-1 to GD-1-100, GD-2-1 to GD-2-130, and GD-3-1 to GD-3-79 are shown below: Optionally, hydrogen in the metal complexes GD-1-1 to GD-1-100, GD-2-1 to GD-2-130, GD-3-1 to GD-3-79 can be partially or completely replaced by deuterium.

18. The organic electroluminescent device according to claim 1, wherein: The organic layer further comprises a second compound comprising at least one chemical group selected from the group consisting of benzene, pyridine, pyrimidine, triazine, carbazole, azacarbazole, indolecarbazole, dibenzothiophene, azadibenzothiophene, dibenzofuran, azadibenzofuran, dibenzoselenophene, triphenylene, azatriphenylene, fluorene, silylfluorene, naphthalene, quinoline, isoquinoline, quinazoline, quinoxaline, phenanthrene, azaphenanthrene, and its combination; Preferably, the organic layer is a light-emitting layer, the first compound is a first host compound, and the second compound is a second host compound.

19. The organic electroluminescent device according to claim 18, wherein: The second compound has a structure represented by Formula 3: in, Each occurrence of E1-E6 is selected from C, CR e or N, and at least two of E1-E6 are N, at least one of E1-E6 is C, and they are connected to formula B; in, Q is the same or different each time it appears and is selected from O, S, Se, N, NR Q , CR Q R Q ,SiR Q R Q ,GeR Q R Q and R Q C=CR Q When there are two R Q When two R Q Can be the same or different; p is 0 or 1; r is 0 or 1; When Q is selected from N, p is 0 and r is 1; When Q is selected from O, S, Se, NR Q , CR Q R Q ,SiR Q R Q ,GeR Q R Q and R Q C=CR Q When the group is composed, p is 1 and r is 0; L3 is identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms, or a combination thereof; Q1-Q8 are selected from C, CR in the same or different manner at each occurrence q or N; R e , R Q and R q Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted Alkynyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylgermanyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amino groups having 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, cyano groups, isocyano groups, hydroxyl groups, mercapto groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof; "*" represents the connection position between Formula B and Formula 3; Adjacent substituent R e , R Q , R q Can optionally be linked to form a ring.

20. The organic electroluminescent device according to claim 18 or 19, wherein: The second compound has a structure represented by Formula 3-1 or Formula 3-2: in, Q is selected, at each occurrence, identically or differently, from the group consisting of O, S and Se; In formula 3-1, Q1-Q8 are selected from C, CR q or N, and one of them is C and connected to L3; L3 is identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms, or a combination thereof; In Formula 3-2, Q1-Q8 are selected from CR q or N; Each time T1-T5 appears, they are selected from C, CR T or N, and one of them is C, and the structure connected; Ar3 and Ar4 are identically or differently selected at each occurrence from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, or combinations thereof; R q and R T Each occurrence is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted Alkynyl groups having 2 to 20 carbon atoms, substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, substituted or unsubstituted alkylsilyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylsilyl groups having 6 to 20 carbon atoms, substituted or unsubstituted alkylgermanyl groups having 3 to 20 carbon atoms, substituted or unsubstituted arylgermanyl groups having 6 to 20 carbon atoms, substituted or unsubstituted amino groups having 0 to 20 carbon atoms, acyl groups, carbonyl groups, carboxylic acid groups, ester groups, cyano groups, isocyano groups, hydroxyl groups, mercapto groups, sulfinyl groups, sulfonyl groups, phosphino groups, and combinations thereof; Adjacent substituent R T can optionally be linked into a ring; Adjacent substituent R q Can optionally be linked to form a ring.

21. The organic electroluminescent device according to claim 18, wherein: The second compound is selected from the group consisting of compound H-1 to compound H-200, and the structures of compound H-1 to compound H-200 are shown below: Optionally, part or all of the hydrogen in the above compounds H-1 to H-200 can be replaced by deuterium.

22. A composition comprising a first metal complex and a first compound, wherein: The first metal complex comprises a metal M and a ligand L coordinated with the metal M. a , L a Having a structure represented by Formula 1: in, The metal M is selected from metals with a relative atomic mass greater than 40; Cy is selected, at each occurrence, identically or differently, from substituted or unsubstituted aryl having 5 to 24 ring atoms, or substituted or unsubstituted heteroaryl having 5 to 24 ring atoms, or a combination thereof; The Cy is connected to the metal M via G1; G1 and G2 are identically or differently selected at each occurrence from a single bond, O or S; X1-X8 are selected from C, CR in the same or different manner at each occurrence x Or N; and at least one of X1-X4 is selected from C and connected to Cy; at least one of X1-X4 is selected from C or N and connected to the metal M through G2; X is selected from the group consisting of O, S, Se, NR1, CR1R1, SiR1R1 and GeR1R1 at each occurrence; when two R1s are present at the same time, the two R1s are the same or different; R x and R1, at each occurrence, is identically or differently selected from the group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; At least one of X1-X8 is CR x , and the R x is selected from cyano or fluorine; Adjacent substituents R1, R x can optionally be linked to form a ring; Wherein, the first compound has a structure represented by Formula 2: in, W is selected from C, CR, w or N; Each time V1-V4 appears, they are selected from C, CR v or N, and one of V1-V4 is selected from C and connected to L2; V5-V 12 Each occurrence is the same or different selection from CR v or N; L, L1 and L2 are identically or differently selected at each occurrence from a single bond, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms, or a combination thereof; Ar1 is selected, at each occurrence, identically or differently, from a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, or a combination thereof; R w and R v The group consisting of hydrogen, deuterium, halogen, substituted or unsubstituted alkyl having 1 to 20 carbon atoms, substituted or unsubstituted cycloalkyl having 3 to 20 ring carbon atoms, substituted or unsubstituted heteroalkyl having 1 to 20 carbon atoms, substituted or unsubstituted heterocyclyl having 3 to 20 ring atoms, substituted or unsubstituted aralkyl having 7 to 30 carbon atoms, substituted or unsubstituted alkoxy having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy having 6 to 30 carbon atoms, substituted or unsubstituted alkenyl having 2 to 20 carbon atoms, substituted or unsubstituted an alkynyl group having 2 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 20 carbon atoms, a substituted or unsubstituted alkylgermanyl group having 3 to 20 carbon atoms, a substituted or unsubstituted arylgermanyl group having 6 to 20 carbon atoms, a substituted or unsubstituted amino group having 0 to 20 carbon atoms, an acyl group, a carbonyl group, a carboxylic acid group, an ester group, a cyano group, an isocyano group, a hydroxyl group, a mercapto group, a sulfinyl group, a sulfonyl group, a phosphino group, and combinations thereof; Adjacent substituent R w can be optionally linked into a ring; Adjacent substituent R v Can optionally be linked to form a ring.

23. An organic layer comprising the composition of claim 22.

24. A display component comprising the organic electroluminescent device according to any one of claims 1 to 21, or the composition according to claim 22, or the organic layer according to claim 23.

25. An electronic device comprising the organic electroluminescent device according to any one of claims 1 to 21, or the composition according to claim 22, or the organic layer according to claim 23, or the display component according to claim 24.

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