An organic polymer, thin film, optoelectronic device and display device

Abstract

This application discloses an organic polymer, a thin film, an optoelectronic device, and a display device. The organic polymer of this application has the following structure: the organic polymer of this application has a metallic heteroaromatic dπ-pπ conjugated system, which can form ordered charge transfer, possessing the necessary conditions for electron transport, as well as high thermal stability and good energy level arrangement. N-type doping increases the conductivity of the organic polymer and improves its electron transport capability.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to an organic polymer, a thin film, an optoelectronic device, and a display apparatus. Background Technology

[0002] Optoelectronic devices such as organic light-emitting diodes (OLEDs) and quantum dot light-emitting diodes (QLEDs) are receiving increasingly widespread applications and attention. Currently, hole transport materials in these devices primarily utilize polymeric materials such as TPD, PVK, or PFB, while electron transport materials mainly employ inorganic materials like ZnO nanocrystals or their derivatives. However, the electron mobility of existing electron transport materials is significantly higher than that of polymeric hole transport materials. Electrons tend to accumulate at the hole transport layer / emitting layer interface, leading to carrier transport imbalance and non-radiative recombination, which negatively impacts carrier transport balance and device performance. Summary of the Invention

[0003] In view of this, this application provides an organic polymer, a thin film, an optoelectronic device, and a display device, aiming to provide a novel material.

[0004] This application provides an organic polymer having a structure as shown in general formula (I):

[0005]

[0006] Wherein, [Os] is OsAL2, OsA2L, or OsL3, A is selected from -H, halogen, -SCN, or -CN, and L is selected from at least one of phosphine ligands, carbonyl ligands, pyridine ligands, nitrogen-containing heterocyclic carbene ligands, nitrile ligands, and isocyanate two-electron ligands; each occurrence of R1 is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, or substituted or unsubstituted alkynyl; each occurrence of R2 is independently selected from O or CR5R6; R5 and R6 are independently selected from... R3 is selected from -H, substituted or unsubstituted alkyl, ester, amide, amino, carboxyl, alkenyl, alkynyl, or combinations thereof having 1-20 carbon atoms; R4 is selected from at least one aromatic group having 6-60 carbon atoms and an alkyl group having 2-20 carbon atoms; R4, each time it appears, is independently selected from CR7 or N; R7 is independently selected from -H, -D, or a straight-chain alkyl group having 1-20 carbon atoms, a straight-chain alkoxy group having 1-20 carbon atoms, or a group having 1-20 carbon atoms. 1-20 straight-chain thioalkoxy groups, or branched alkyl groups with 3-20 carbon atoms, or cyclic alkyl groups with 3-20 carbon atoms, or branched alkoxy groups with 3-20 carbon atoms, or cyclic alkoxy groups with 3-20 carbon atoms, or branched thioalkoxy groups with 3-20 carbon atoms, or cyclic thioalkoxy groups with 3-20 carbon atoms, or silyl groups, or ketone groups with 1-20 carbon atoms, or alkoxycarbonyl groups with 2-20 carbon atoms, or carbon atoms... The following groups are present in the range of 7-20: aryloxycarbonyl, cyano, carbamoyl, haloformyl, formyl, isocyano, isocyanate, thiocyanate, or isothiocyanate; hydroxyl, nitro; -CF3, -Cl, -Br, -F, -I; or substituted or unsubstituted aromatic groups having 6-60 ring atoms; or substituted or unsubstituted heteroaryl groups having 5-60 ring atoms; or substituted or unsubstituted aryloxy or heteroaryloxy groups having 5-60 ring atoms; or combinations of these groups; Z - The anion is selected from F. - Cl - ,Br - I - BF4 - H2PO4 - C2O4 2- SO4 2- CF3SO3 - CH3COO - (CF3SO2)2N - NO3 - ClO4 - PF6 - and BPh4 - At least one of the following; n is an integer from 3 to 300.

[0007] Optionally, in some embodiments of this application, the organic polymer structure is selected from one of general formulas (II-1) or (II-2):

[0008]

[0009] Optionally, in some embodiments of this application, L is selected from at least one of triphenylphosphine, trimethylphosphine, triethylphosphine, tripropylphosphine, triisopropylphosphine, tritert-butylphosphine, tricyclohexylphosphine, methylpyridine, ethylpyridine-1,4-bipyridine, 1,2-bis(4-pyridyl)ethylene, vinylpyridine, ethynylpyridine, pyridineboronic acid, aminopyridine, cyanopyridine, mercaptopyridine, dimethylaminopyridine, phenylpyridine, 1,2-bis(4-pyridyl)ethane, imidazole-type nitrogen heterocyclic carbene, imidazole-type nitrogen heterocyclic carbene, thiazole-type nitrogen heterocyclic carbene, triazole-type nitrogen heterocyclic carbene, acetonitrile, propionitrile, benzonitrile, cyclohexyl isocyanate, tert-butyl isocyanate, and phenyl isocyanate.

[0010] Optionally, in some embodiments of this application, [Os] is selected from at least one of OsCl(PPh3)2, OsH(PPh3)2, OsCl(PEt3)2, and OsCl(PMe3)2.

[0011] Optionally, in some embodiments of this application, R1 is selected from -H, phenyl, diphenyl, terphenyl, naphthyl, anthracene, phenanthrene, pyrene, thiophene, dithiophene, terthiophene, thiophene-ethylenethiophene, thiazolyl, thiadiazolyl, benzothiadiazolyl, benzotrithiaphene, furanyl, pyridyl, pyrroleyl, porphyrinyl, fluorenyl, difluorenyl, terfluorenyl, carbazole, dicarbazole, tercarbazole, benzothiadiazolyl, tetraphenylethylene. Hexabenzokeryl, pyrrolopyrrolidinyl, benzodithiopheneyl, indaheno-benzodithiopheneyl, silylfluorenyl, dithienocyclofluorendienyl, dithienothiopheneyl, dithienopyrrolidinyl, triphenylamino, pyrrolopyrrolidinyl, naphthodithiadiazolyl, naphthalenetetracarboxylic acid diimide, perylenetetracarboxylic acid diimide, isoindigoyl, thienopyrrolidinyl, benzopyrrolidinyl, benzotriazolyl, thiadiazo-benzotriazolyl, pyridinothiadiazolyl,

[0012] At least one of them; and / or

[0013] R2 is selected from O, CH2, C(COOMe)2; and / or R3 is selected from at least one of the following structures:

[0014] Where C 12 H 25 It is a straight-chain alkyl group.

[0015] Optionally, in some embodiments of this application, the organic polymer is selected from the following structures:

[0016]

[0017]

[0018] Accordingly, embodiments of this application also provide a thin film, the material of which comprises an organic polymer with a structure as shown in general formula (I):

[0019]

[0020] Wherein, [Os] is OsAL2, OsA2L, or OsL3, A is selected from -H, halogen, -SCN, or -CN, and L is selected from at least one of phosphine ligands, carbonyl ligands, pyridine ligands, nitrogen-containing heterocyclic carbene ligands, nitrile ligands, and isocyanate two-electron ligands; each occurrence of R1 is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, or substituted or unsubstituted alkynyl; each occurrence of R2 is independently selected from O or CR5R6; R5 and R6 are independently selected from... R3 is selected from -H, substituted or unsubstituted alkyl, ester, amide, amino, carboxyl, alkenyl, alkynyl, or combinations thereof having 1-20 carbon atoms; R4 is selected from at least one aromatic group having 6-60 carbon atoms and an alkyl group having 2-20 carbon atoms; R4, each time it appears, is independently selected from CR7 or N; R7 is independently selected from -H, -D, or a straight-chain alkyl group having 1-20 carbon atoms, a straight-chain alkoxy group having 1-20 carbon atoms, or a group having 1-20 carbon atoms. 1-20 straight-chain thioalkoxy groups, or branched alkyl groups with 3-20 carbon atoms, or cyclic alkyl groups with 3-20 carbon atoms, or branched alkoxy groups with 3-20 carbon atoms, or cyclic alkoxy groups with 3-20 carbon atoms, or branched thioalkoxy groups with 3-20 carbon atoms, or cyclic thioalkoxy groups with 3-20 carbon atoms, or silyl groups, or ketone groups with 1-20 carbon atoms, or alkoxycarbonyl groups with 2-20 carbon atoms, or carbon atoms... The following groups are present in the range of 7-20: aryloxycarbonyl, cyano, carbamoyl, haloformyl, formyl, isocyano, isocyanate, thiocyanate, or isothiocyanate; hydroxyl, nitro; -CF3, -Cl, -Br, -F, -I; or substituted or unsubstituted aromatic groups having 6-60 ring atoms; or substituted or unsubstituted heteroaryl groups having 5-60 ring atoms; or substituted or unsubstituted aryloxy or heteroaryloxy groups having 5-60 ring atoms; or combinations of these groups; Z - The anion is selected from F. - Cl - ,Br - I - BF4 - H2PO4- C2O4 2- SO4 2- CF3SO3 - CH3COO - (CF3SO2)2N - NO3 - ClO4 - PF6 - and BPh4 - At least one of the following; n is an integer from 3 to 300.

[0021] Optionally, in some embodiments of this application, the organic polymer structure is selected from one of general formulas (II-1) or (II-2):

[0022]

[0023] Optionally, in some embodiments of this application, L is selected from at least one of triphenylphosphine, trimethylphosphine, triethylphosphine, tripropylphosphine, triisopropylphosphine, tritert-butylphosphine, tricyclohexylphosphine, methylpyridine, ethylpyridine-1,4-bipyridine, 1,2-bis(4-pyridyl)ethylene, vinylpyridine, ethynylpyridine, pyridineboronic acid, aminopyridine, cyanopyridine, mercaptopyridine, dimethylaminopyridine, phenylpyridine, 1,2-bis(4-pyridyl)ethane, imidazole-type nitrogen heterocyclic carbene, imidazole-type nitrogen heterocyclic carbene, thiazole-type nitrogen heterocyclic carbene, triazole-type nitrogen heterocyclic carbene, acetonitrile, propionitrile, benzonitrile, cyclohexyl isocyanate, tert-butyl isocyanate, and phenyl isocyanate.

[0024] Optionally, in some embodiments of this application, [Os] is selected from at least one of OsCl(PPh3)2, OsH(PPh3)2, OsCl(PEt3)2, and OsCl(PMe3)2.

[0025] Optionally, in some embodiments of this application, R1 is selected from -H, phenyl, diphenyl, terphenyl, naphthyl, anthracene, phenanthrene, pyrene, thiophene, dithiophene, terthiophene, thiophene-ethylenethiophene, thiazolyl, thiadiazolyl, benzothiadiazolyl, benzotrithiaphene, furanyl, pyridyl, pyrroleyl, porphyrinyl, fluorenyl, difluorenyl, terfluorenyl, carbazole, dicarbazole, tercarbazole, benzothiadiazolyl, tetraphenylethylene. Hexabenzokeryl, pyrrolopyrrolidinyl, benzodithiopheneyl, indaheno-benzodithiopheneyl, silylfluorenyl, dithienocyclofluorendienyl, dithienothiopheneyl, dithienopyrrolidinyl, triphenylamino, pyrrolopyrrolidinyl, naphthodithiadiazolyl, naphthalenetetracarboxylic acid diimide, perylenetetracarboxylic acid diimide, isoindigoyl, thienopyrrolidinyl, benzopyrrolidinyl, benzotriazolyl, thiadiazo-benzotriazolyl, pyridinothiadiazolyl,

[0026] At least one of them; and / or

[0027] R2 is selected from O, CH2, C(COOMe)2; and / or R3 is selected from at least one of the following structures:

[0028] Where C 12 H 25 It is a straight-chain alkyl group.

[0029] Optionally, in some embodiments of this application, the organic polymer is selected from the following structures:

[0030]

[0031]

[0032] Accordingly, this application also provides an optoelectronic device, including an anode, a light-emitting layer, an electronic functional layer and a cathode stacked together, wherein the material of the electronic functional layer includes the above-mentioned organic polymer or the electronic functional layer is the above-mentioned thin film.

[0033] Optionally, in some embodiments of this application, the material of the light-emitting layer is an organic light-emitting material or a quantum dot light-emitting material. The organic light-emitting material is selected from at least one of diaromatic anthracene derivatives, stilbene aromatic derivatives, pyrene derivatives or fluorene derivatives, blue-emitting TBPe fluorescent materials, green-emitting TTPA fluorescent materials, orange-emitting TBRb fluorescent materials, and red-emitting DBP fluorescent materials. The quantum dot light-emitting material includes at least one of group II-VI compounds, group III-V compounds, and group I-III-VI compounds. The group II-VI compounds are selected from CdSe, CdS, CdTe, ZnSe, ... At least one of ZnS, CdTe, ZnTe, CdZnS, CdZnSe, CdZnTe, ZnSeS, ZnSeTe, ZnTeS, CdSeS, CdSeTe, CdTeS, CdZnSeS, CdZnSeTe, and CdZnSTe; the III-V compound is selected from InP, InAs, GaP, GaAs, GaSb, AlN, AlP, InAsP, InNP, InNSb, GaAlNP, and InAlNP; the I-III-VI compound is selected from at least one of CuInS2, CuInSe2, and AgInS2.

[0034] Accordingly, this application also provides a display device, which includes the above-mentioned optoelectronic device.

[0035] The organic polymer of this application possesses a metallic heteroaromatic dπ-pπ conjugated system, which can form ordered charge transfer, possessing the necessary conditions for electron transport, as well as high thermal stability and good energy level arrangement. N-type doping increases the conductivity of the organic polymer and improves its electron transport capability. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of an optoelectronic device provided in an embodiment of this application;

[0038] Figure 2 This is a schematic flowchart of a method for fabricating an optoelectronic device provided in an embodiment of this application;

[0039] Figure 3 This is a schematic diagram of another method for fabricating an optoelectronic device provided in the embodiments of this application. Detailed Implementation

[0040] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" specifically refer to the drawing directions in the accompanying drawings. In addition, in the description of this application, the term "including" means "including but not limited to". Various embodiments of this application may exist in the form of a range; it should be understood that the description in the form of a range is only for convenience and conciseness and should not be construed as a hard limitation on the scope of this application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values ​​within that range. For example, it should be assumed that the description of a range from 1 to 6 specifically discloses subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5, and 6, regardless of the range. Furthermore, whenever a numerical range is referred to herein, it means including any referenced number (fraction or integer) within the range referred to.

[0041] In this application, heteroaromatic groups, heteroaromatic families, and heteroaromatic ring systems have the same meaning and can be used interchangeably.

[0042] In this application, "substituted or unsubstituted" means that the defined group may or may not be substituted. When the defined group is substituted, it should be understood that the defined group may be substituted by one or more substituents.

[0043] In this application, "ring atom number" refers to the number of ring atoms constituting the ring itself in a cyclic compound (e.g., monocyclic, fused-ring, or polycyclic compound) formed by atomic bonds, i.e., the number of atoms forming the ring. When the ring is substituted by a substituent, the atoms contained in the substituent are not included in the ring atom count. The same applies to the "ring atom number" described below unless otherwise specified. For example, the benzene ring has 6 ring atoms, the naphthalene ring has 10 ring atoms, and the thiophene group has 5 ring atoms.

[0044] "Aryl or aromatic group" refers to an aromatic hydrocarbon group derived from an aromatic ring compound by removing at least one hydrogen atom. It can be a monocyclic aryl, a fused-ring aryl, or a polycyclic aryl; for polycyclic rings, at least one is an aromatic ring system. For example, "substituted or unsubstituted aryl group having 6 to 20 ring atoms" refers to an aryl group containing 6 to 20 ring atoms, and the aryl group may optionally be further substituted. Suitable examples include, but are not limited to: phenyl, biphenyl, terphenyl, naphthyl, anthracene, phenanthrene, fluoranyl, triphenylene, pyrene, perylene, tetraphenyl, fluorenyl, dinaphthylphenyl, acenaphthyl, and their derivatives.

[0045] "Heteroaryl or heteroaromatic group" refers to an aryl group in which at least one carbon atom is replaced by a non-carbon atom, which can be an N atom, O atom, S atom, etc. For example, "substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms" refers to a heteroaryl group having 5 to 20 ring atoms, and the heteroaryl group may optionally be further substituted; suitable examples include, but are not limited to: thiophene, furanyl, pyrrole, diazolyl, triazolyl, imidazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinel, pyrazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, phthalazine. alkyl, pyridopyrimidinyl, pyridopyrazinyl, benzothiopheneyl, benzofuranyl, indolyl, pyrroloimidazolyl, pyrrolopyrrolyl, thienopyrrolyl, thienopyrrolyl, furanopyrrolyl, furanofuranyl, thienofuranyl, benzoisoxazolyl, benzoisothiazolyl, benzoimidazolyl, o-diazanaphthyl, phenanthrynyl, primidyl, quinazolinoneyl, dibenzothiopheneyl, dibenzofuranyl, carbazoleyl and their derivatives.

[0046] In this application, "alkyl" includes both chain alkyl and cyclic alkyl, with chain alkyl including straight-chain and branched chains. Non-limiting examples of alkyl include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl, 3,3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, cyclopentyl, 1-methylpentyl, 3-methylpentyl, 2-ethylpentyl, 4-methyl-2-pentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 2-butylhexyl, cyclohexyl, adamantyl, etc.

[0047] "Halogen" refers to F, Cl, Br or I.

[0048] In this application, "alkoxy" refers to a group with the structure "-O-alkyl", that is, an alkyl group as defined above that is attached to another group via an oxygen atom. Suitable examples of phrases containing this term include, but are not limited to: methoxy (-O-CH3 or -OMe), ethoxy (-O-CH2CH3 or -OEt), and tert-butoxy (-OC(CH3)3 or -OtBu). "Aryloxy" refers to a group with the structure "-O-aromatic", that is, an aromatic group as defined above that is attached to another group via an oxygen atom. "Arylthio" refers to a group with the structure "-S-aromatic", that is, an aromatic group as defined above that is attached to another group via a sulfur atom. "Heteroaryloxy" refers to a group with the structure "-O-heteroaryl", that is, a heteroaryl group as defined above that is attached to another group via an oxygen atom. "Heteroarylthio" refers to a group with the structure "-S-heteroaryl", that is, a heteroaryl group as defined above that is attached to another group via a sulfur atom.

[0049] In this application, "amino group" refers to an amine derivative having the structural feature of the formula -N(X)2, wherein each "X" is independently selected from H, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclic group, etc. Non-limiting types of amino groups include -NH2, -N(alkyl)2, -NH(alkyl), -N(cycloalkyl)2, -NH(cycloalkyl), -N(heterocyclic)2, -NH(heterocyclic), -N(aryl)2, -NH(aryl), -N(alkyl)(aryl), -N(alkyl)(heterocyclic), -N(cycloalkyl)(heterocyclic), -N(aryl)(heteroaryl), -N(alkyl)(heteroaryl), etc.

[0050] In this application, unless otherwise defined, hydroxyl refers to -OH, carboxyl refers to -COOH, carbonyl refers to -C(=O)-, amino refers to -NH2, formyl refers to -C(=O)H, haloformyl refers to -C(=O)Z (where Z represents halogen), carbamoyl refers to -C(=O)NH2, isocyanate refers to -NCO, and isothiocyanate refers to -NCS.

[0051] This application provides an organic polymer having a structure as shown in general formula (I):

[0052]

[0053] Wherein, [Os] is OsAL2, OsA2L or OsL3, A is selected from -H, halogen, -SCN or -CN, and L is selected from at least one of phosphine ligands, carbonyl ligands, pyridine ligands, nitrogen heterocyclic carbene ligands, nitrile ligands and isocyanate two-electron ligands;

[0054] Each time R1 appears, it is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl;

[0055] Each occurrence of R2 is independently selected from O or CR5R6;

[0056] R5 and R6 are independently selected from -H, substituted or unsubstituted alkyl, ester, amide, amino, carboxyl, alkenyl, ynyl, or combinations thereof having 1 to 20 carbon atoms;

[0057] R3 is selected from at least one of aromatic groups having 6-60 carbon atoms and alkyl groups having 2-20 carbon atoms;

[0058] Each time R4 appears, it is independently selected from CR7 or N;

[0059] R7 is independently selected from -H, -D, or a straight-chain alkyl group having 1-20 carbon atoms, a straight-chain alkoxy group having 1-20 carbon atoms, a straight-chain thioalkoxy group having 1-20 carbon atoms, a branched alkyl group having 3-20 carbon atoms, a cyclic alkyl group having 3-20 carbon atoms, a branched alkoxy group having 3-20 carbon atoms, a cyclic alkoxy group having 3-20 carbon atoms, a branched thioalkoxy group having 3-20 carbon atoms, a cyclic thioalkoxy group having 3-20 carbon atoms, a silyl group, or a group having 1-20 carbon atoms. Ketoyl group, or alkoxycarbonyl group with 2-20 carbon atoms, or aryloxycarbonyl group with 7-20 carbon atoms, cyano, carbamoyl, halocarbamoyl, formyl, isocyano, isocyanate, thiocyanate or isothiocyanate, hydroxyl, nitro, -CF3, -Cl, -Br, -F, -I, or substituted or unsubstituted aromatic group with 6-60 ring atoms, or substituted or unsubstituted heteroaryl group with 5-60 ring atoms, or substituted or unsubstituted aryloxy or heteroaryloxy group with 5-60 ring atoms, or combinations of these groups;

[0060] Z - The anion is selected from F. - Cl - ,Br - I - BF4- H2PO4 - C2O4 2- SO4 2- CF3SO3 - CH3COO - (CF3SO2)2N - NO3 - ClO4 - PF6 - and BPh4 - At least one of them;

[0061] m is an integer from 3 to 300.

[0062] In one embodiment, the organic polymer structure is selected from one of general formulas (II-1) or (II-2):

[0063]

[0064] In one embodiment, L may further be selected from at least one of triphenylphosphine, trimethylphosphine, triethylphosphine, tripropylphosphine, triisopropylphosphine, tritert-butylphosphine, tricyclohexylphosphine, methylpyridine, ethylpyridine-1,4-bipyridine, 1,2-bis(4-pyridyl)ethylene, vinylpyridine, ethynylpyridine, pyridineboronic acid, aminopyridine, cyanopyridine, mercaptopyridine, dimethylaminopyridine, phenylpyridine, 1,2-bis(4-pyridyl)ethane, imidazole-type nitrogen heterocyclic carbene, imidazole-type nitrogen heterocyclic carbene, thiazole-type nitrogen heterocyclic carbene, triazole-type nitrogen heterocyclic carbene, acetonitrile, propionitrile, benzonitrile, cyclohexylisocyanate, tert-butylisocyanate, and phenylisocyanate.

[0065] In one embodiment, [Os] is selected from at least one of OsCl(PPh3)2, OsH(PPh3)2, OsCl(PEt3)2, and OsCl(PMe3)2.

[0066] In one embodiment, each occurrence of R1 is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, and substituted or unsubstituted alkynyl. The substituted or unsubstituted aryl group is selected from phenyl, diphenyl, terphenyl, naphthyl, anthracene, phenanthryl, pyrene, thienyl, dithienyl, terthienyl, thienylethenyl, thiazolyl, thiadiazolyl, denosylthiadiazolyl, denosyltrithienyl, furanyl, pyridyl, pyrroleyl, porphyrinyl, fluorenyl, difluorenyl, terfluorenyl, carbazole, dicarbazole, tercarbazole, benzothiadiazolyl, tetraphenylethylene, hexabenzomyryl, etc. At least one of the following: pyrrolopyrrolodione, benzodithiophene, indahenodithiophene, silanyl, dithienocyclofluorendienyl, dithienothiophene, dithienopyrrolo, triphenylamino, pyrrolopyrrolodione, naphthodithiadiazolyl, naphthalenetetracarboxylic acid diimide, perylenetetracarboxylic acid diimide, isoindigo, thienopyrrolodione, benzopyrrolodione, benzotriazolyl, thiadiazobenzotriazolyl, and pyridinothiadiazolyl. The substituted or unsubstituted alkenyl group is selected from the following structures:

[0067] The substituted or unsubstituted alkynyl group is selected from the following structures:

[0068]

[0069] R2 is selected from O, CH2 or C(COOMe)2.

[0070] R3 is selected from at least one of the following structures:

[0071]

[0072]

[0073] Where C 12 H 25 It is a straight-chain alkyl group.

[0074] In one embodiment, R4 is selected from CH, CD, or N.

[0075] The organic polymer is selected from the following structures:

[0076]

[0077]

[0078] The organic polymer of this application uses osmium transition metal-organic aromatic groups as side chains, possessing a metal-heteroaromatic dπ-pπ conjugated system. This system can form ordered charge transfer, fulfilling the necessary conditions for electron transport. The main chain is connected to the osmium transition metal-organic aromatic group side chains, which can adjust the potential barrier of the osmium transition metal-organic aromatic groups, modify the energy levels of the organic polymer, and improve electron mobility. This makes the energy levels of the organic polymer more compatible with inorganic light-emitting materials or cathode materials, improving electron injection performance. Nitrogen doping further enhances the conductivity and electron transport capability of the organic polymer. Through its chain structure, the organic polymer exhibits good cross-linking properties and excellent film-forming properties during film deposition. Applying the organic polymer as an electronic functional layer material in optoelectronic devices can avoid excessive charge accumulation at the interfaces between film layers, thereby preventing interface material degradation and promoting the stability of the optoelectronic device. In quantum dot optoelectronic devices, using this organic polymer as an electron transport material can avoid the use of inorganic metal oxides, thus eliminating the fluorescence quenching effect of inorganic metal oxides on quantum dots (QDs).

[0079] In one specific embodiment, the organic polymer of this application can be prepared by the following method: dissolving a metallopyne and a first polymer in an organic solvent, stirring the mixture to obtain the organic polymer. The molar ratio of the metallopyne to the first polymer can be 2:1-3:1. The solvent can be selected from at least one of diethyl ether hydrochloride and dichloromethane. The stirring reaction can be carried out at room temperature for 2-5 hours. Specifically, the room temperature range is 20-30 degrees Celsius. After the stirring reaction, the reaction mixture can be purified. For example, purification can be performed using solid-liquid separation, chromatographic purification, etc. The chromatographic method can include column chromatography, thin-layer chromatography, etc. The eluent used in the chromatographic method can be selected from at least one of methanol, dichloromethane, and n-hexane.

[0080] The structure of the metal heteropentatyne is shown in general formula (III):

[0081]

[0082] The structure of the first polymer is shown in general formula (IV):

[0083]

[0084] In the aforementioned organic polymers, on one hand, they can be obtained through the addition of metal-based heteropentalyne to the unsaturated bonds of the first polymer. Using the organic polymer as the electron transport layer material allows for good energy level matching between the electron transport layer and the quantum dot light-emitting and cathode layers, effectively improving the interfacial contact between them. This helps reduce steric hindrance or potential barriers, facilitating the migration of more charge carriers to the quantum dot light-emitting layer and thus improving device performance. On the other hand, the first polymer, as the backbone of the organic polymer, increases conductivity and promotes charge transport. Therefore, using the organic polymer as the electron transport layer material avoids the problem of excessive charge accumulation at the interface due to unbalanced charge carrier transport, which could lead to interface material degradation, further enhancing device performance.

[0085] This application also provides a thin film, the material of which includes an organic polymer such as general formula (I):

[0086]

[0087] Wherein, [Os] is OsAL2, OsA2L or OsL3, A is selected from -H, halogen, -SCN or -CN, and L is selected from at least one of phosphine ligands, carbonyl ligands, pyridine ligands, nitrogen heterocyclic carbene ligands, nitrile ligands and isocyanate two-electron ligands;

[0088] Each time R1 appears, it is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl;

[0089] Each occurrence of R2 is independently selected from O or CR5R6;

[0090] R5 and R6 are independently selected from -H, substituted or unsubstituted alkyl, ester, amide, amino, carboxyl, alkenyl, ynyl, or combinations thereof having 1 to 20 carbon atoms;

[0091] R3 is selected from at least one of aromatic groups having 6-60 carbon atoms and alkyl groups having 2-20 carbon atoms;

[0092] Each time R4 appears, it is independently selected from CR7 or N;

[0093] R7 is independently selected from -H, -D, or a straight-chain alkyl group having 1-20 carbon atoms, a straight-chain alkoxy group having 1-20 carbon atoms, a straight-chain thioalkoxy group having 1-20 carbon atoms, a branched alkyl group having 3-20 carbon atoms, a cyclic alkyl group having 3-20 carbon atoms, a branched alkoxy group having 3-20 carbon atoms, a cyclic alkoxy group having 3-20 carbon atoms, a branched thioalkoxy group having 3-20 carbon atoms, a cyclic thioalkoxy group having 3-20 carbon atoms, a silyl group, or a group having 1-20 carbon atoms. Ketoyl group, or alkoxycarbonyl group with 2-20 carbon atoms, or aryloxycarbonyl group with 7-20 carbon atoms, cyano, carbamoyl, halocarbamoyl, formyl, isocyano, isocyanate, thiocyanate or isothiocyanate, hydroxyl, nitro, -CF3, -Cl, -Br, -F, -I, or substituted or unsubstituted aromatic group with 6-60 ring atoms, or substituted or unsubstituted heteroaryl group with 5-60 ring atoms, or substituted or unsubstituted aryloxy or heteroaryloxy group with 5-60 ring atoms, or combinations of these groups;

[0094] Z - The anion is selected from F. - Cl - ,Br - I - BF4 - H2PO4 - C2O4 2- SO4 2- CF3SO3 - CH3COO - (CF3SO2)2N - NO3 - ClO4 - PF6 - and BPh4 - At least one of them;

[0095] n is an integer from 3 to 300.

[0096] In one embodiment, the organic polymer structure is selected from one of general formulas (II-1) or (II-2):

[0097]

[0098] In one embodiment, L may further be selected from at least one of triphenylphosphine, trimethylphosphine, triethylphosphine, tripropylphosphine, triisopropylphosphine, tritert-butylphosphine, tricyclohexylphosphine, methylpyridine, ethylpyridine-1,4-bipyridine, 1,2-bis(4-pyridyl)ethylene, vinylpyridine, ethynylpyridine, pyridineboronic acid, aminopyridine, cyanopyridine, mercaptopyridine, dimethylaminopyridine, phenylpyridine, 1,2-bis(4-pyridyl)ethane, imidazole-type nitrogen heterocyclic carbene, imidazole-type nitrogen heterocyclic carbene, thiazole-type nitrogen heterocyclic carbene, triazole-type nitrogen heterocyclic carbene, acetonitrile, propionitrile, benzonitrile, cyclohexylisocyanate, tert-butylisocyanate, and phenylisocyanate.

[0099] In one embodiment, [Os] is selected from at least one of OsCl(PPh3)2, OsH(PPh3)2, OsCl(PEt3)2, and OsCl(PMe3)2.

[0100] In one embodiment, each occurrence of R1 is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, and substituted or unsubstituted alkynyl. The substituted or unsubstituted aryl group is selected from phenyl, diphenyl, terphenyl, naphthyl, anthracene, phenanthryl, pyrene, thienyl, dithienyl, terthienyl, thienylethenyl, thiazolyl, thiadiazolyl, denosylthiadiazolyl, denosyltrithienyl, furanyl, pyridyl, pyrroleyl, porphyrinyl, fluorenyl, difluorenyl, terfluorenyl, carbazole, dicarbazole, tercarbazole, benzothiadiazolyl, tetraphenylethylene, hexabenzomyryl, etc. At least one of the following: pyrrolopyrrolodione, benzodithiophene, indahenodithiophene, silanyl, dithienocyclofluorendienyl, dithienothiophene, dithienopyrrolo, triphenylamino, pyrrolopyrrolodione, naphthodithiadiazolyl, naphthalenetetracarboxylic acid diimide, perylenetetracarboxylic acid diimide, isoindigo, thienopyrrolodione, benzopyrrolodione, benzotriazolyl, thiadiazobenzotriazolyl, and pyridinothiadiazolyl. The substituted or unsubstituted alkenyl group is selected from the following structures:

[0101] The substituted or unsubstituted alkynyl group is selected from the following structures:

[0102]

[0103] In one embodiment, R2 is selected from O, CH2 or C(COOMe)2.

[0104] R3 is selected from at least one of the following structures:

[0105]

[0106]

[0107] Where C 12H 25 It is a straight-chain alkyl group.

[0108] In one embodiment, R4 is selected from CH, CD, or N.

[0109] The organic polymer is selected from the following structures:

[0110]

[0111]

[0112] The thin film of this embodiment includes the organic polymer provided in this application. Osmium transition metal-organic aromatic groups serve as side chains of the organic polymer, possessing a metal-aromatic dπ-pπ conjugated system. This system can form ordered charge transfer, fulfilling the necessary conditions for electron transport. The main chain is connected to the osmium transition metal-organic aromatic group side chains, which can adjust the potential barrier of the osmium transition metal-organic aromatic groups, adjust the energy levels of the organic polymer, and improve electron mobility. This makes the energy levels of the organic polymer more compatible with inorganic light-emitting materials or cathode materials, improving electron injection performance. Nitrogen doping further enhances the conductivity and electron transport capability of the organic polymer. Through its chain structure, the organic polymer exhibits good crosslinking properties and excellent film-forming properties during film deposition. Applying the organic polymer as an electronic functional layer material in optoelectronic devices can avoid excessive charge accumulation at the interfaces between film layers, thereby preventing degradation of the interface material and promoting the stability of the optoelectronic device. In quantum dot optoelectronic devices, using this organic polymer as an electron transport material can avoid the use of inorganic metal oxides, thereby eliminating the fluorescence quenching effect of inorganic metal oxides on quantum dots (QDs).

[0113] The thin film of this application can be directly prepared onto a substrate using a solution method. This solution method includes, but is not limited to, spin coating, coating, inkjet printing, blade coating, dip-coating, immersion coating, spraying, roller coating, or casting.

[0114] This application also provides an optoelectronic device, see reference. Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the optoelectronic device provided in this application. The optoelectronic device 100 includes an anode 10, a light-emitting layer 20, an electronic functional layer 30, and a cathode 40 arranged sequentially; wherein, the electronic functional layer 30 is the aforementioned thin film.

[0115] In this embodiment, the thin film mentioned above in the electronic functional layer 30 can be referred to in the relevant description of the thin film above, and will not be repeated here. The electronic functional layer 30 can be an electron transport layer or an electron injection layer, or other electron-related functional layer. Furthermore, in addition to the organic polymers provided in this application, the material of the electronic functional layer 30 can also include other electronic functional materials, such as other electron transport materials or electron injection materials.

[0116] The electron transport material can be any material known in the art for use in electron transport layers. For example, it can be selected from, but is not limited to, one or more of inorganic nanocrystalline materials, doped inorganic nanocrystalline materials, and organic materials. Inorganic nanocrystalline materials can include, but are not limited to, one or more of zinc oxide, titanium dioxide, tin dioxide, aluminum oxide, calcium oxide, silicon dioxide, gallium oxide, and zirconium oxide. Doped inorganic nanocrystalline materials include, but are not limited to, one or more of zinc oxide dopant, titanium dioxide dopant, and tin dioxide dopant. The doped inorganic nanocrystalline material is an inorganic material doped with other elements, such as Mg, Ca, Li, Ga, Al, Co, Mn, etc. Organic materials can include, but are not limited to, one or two of polymethyl methacrylate and polyvinyl butyral. The electron injection material can be any material known in the art for use in electron injection layers, such as, but not limited to, at least one of Ga₂O₃, LiF / Yb, ZnO, Cs₂CO₃, RbBr, and Rb₂CO₃.

[0117] In this embodiment, the light-emitting layer 20 is an organic light-emitting layer or a quantum dot light-emitting layer. When the light-emitting layer 20 is an organic light-emitting layer, the optoelectronic device 100 can be an organic electroluminescent device. When the light-emitting layer 20 is a quantum dot light-emitting layer, the optoelectronic device 100 can be a quantum dot electroluminescent device.

[0118] The material of the organic light-emitting layer is a material known in the art for use in organic light-emitting layers. For example, it may be selected from, but is not limited to, at least one of diaromatic anthracene derivatives, stilbene aromatic derivatives, pyrene derivatives or fluorene derivatives, TBPe fluorescent material that emits blue light, TTPA fluorescent material that emits green light, TBRb fluorescent material that emits orange light, and DBP fluorescent material that emits red light.

[0119] The material of the quantum dot emitting layer is a quantum dot known in the art for use in quantum dot emitting layers, such as one of red quantum dots, green quantum dots, and blue quantum dots. The material of the quantum dot emitting layer is selected from at least one of single-structure quantum dots and core-shell structure quantum dots. The single-structure quantum dots are selected from at least one of group II-VI compounds, group III-V compounds, and group I-III-VI compounds. The group II-VI compounds are selected from at least one of CdSe, CdS, CdTe, ZnSe, ZnS, CdTe, ZnTe, CdZnS, CdZnSe, CdZnTe, ZnSeS, ZnSeTe, ZnTeS, CdSeS, CdSeTe, CdTeS, CdZnSeS, CdZnSeTe, and CdZnSTe. The group I-V compounds are selected from at least one of InP, InAs, GaP, GaAs, GaSb, AlN, AlP, InAsP, InNP, InNSb, GaAlNP, and InAlNP; the group I-III-VI compounds are selected from at least one of CuInS2, CuInSe2, and AgInS2; the core of the core-shell quantum dot is selected from any of the above-mentioned single-structure quantum dots; and the shell material of the core-shell quantum dot is selected from at least one of CdS, CdTe, CdSeTe, CdZnSe, CdZnS, CdSeS, ZnSe, ZnSeS, and ZnS. Specifically, the quantum dot can be one or more of silicon quantum dots, germanium quantum dots, cadmium sulfide quantum dots, cadmium selenide quantum dots, cadmium telluride quantum dots, zinc selenide quantum dots, lead sulfide quantum dots, lead selenide quantum dots, indium phosphide quantum dots, indium arsenide quantum dots, and gallium nitride quantum dots.

[0120] In one embodiment, the quantum dots may have ligands attached to their surfaces. The ligands can be selected from mercaptoacetic acid, mercaptopropionic acid, mercaptobutyric acid, and mercaptooleic acid. After the ligands coordinate with the atoms on the quantum dot surface, they modify the quantum dot surface with carboxylic acid groups. Furthermore, the positively charged amino groups at one end of the gelling agent can generate electrostatic forces with the negatively charged carboxylic acid groups on the quantum dot layer surface, achieving electrostatic self-assembly. This is beneficial for improving the film quality of the quantum dots, thereby enhancing the performance and stability of the QLED device.

[0121] In this embodiment, the anode 10 can be a composite electrode formed by one or more of the following: a metal electrode, a carbon electrode, and a doped or undoped metal oxide electrode; wherein, the material of the metal electrode is selected from at least one of Al, Ag, Cu, Mo, Au, Ba, Ca, and Mg; the material of the carbon electrode is selected from at least one of graphite, carbon nanotubes, graphene, and carbon fibers; the material of the doped or undoped metal oxide electrode is selected from at least one of ITO, FTO, ATO, AZO, GZO, IZO, MZO, and AMO; and the material of the composite electrode is selected from at least one of AZO / Ag / AZO, AZO / Al / AZO, ITO / Ag / ITO, ITO / Al / ITO, ZnO / Ag / ZnO, ZnO / Al / ZnO, TiO2 / Ag / TiO2, TiO2 / Al / TiO2, ZnS / Ag / ZnS, ZnS / Al / ZnS, TiO2 / Ag / TiO2, and TiO2 / Al / TiO2. The composite electrode AZO / Ag / AZO refers to a composite structure electrode formed by stacking AZO, Ag, and AZO layers. The thickness of the anode 10 can be a known anode thickness in the art, such as 10-1000 nm.

[0122] The cathode 40 can be a composite electrode formed by one or more of the following: a metal electrode, a carbon electrode, and a doped or undoped metal oxide electrode; wherein, the material of the metal electrode is selected from at least one of Al, Ag, Cu, Mo, Au, Ba, Ca, and Mg; the material of the carbon electrode is selected from at least one of graphite, carbon nanotubes, graphene, and carbon fibers; the material of the doped or undoped metal oxide electrode is selected from at least one of ITO, FTO, ATO, AZO, GZO, IZO, MZO, and AMO; and the material of the composite electrode is selected from at least one of AZO / Ag / AZO, AZO / Al / AZO, ITO / Ag / ITO, ITO / Al / ITO, ZnO / Ag / ZnO, ZnO / Al / ZnO, TiO2 / Ag / TiO2, TiO2 / Al / TiO2, ZnS / Ag / ZnS, ZnS / Al / ZnS, TiO2 / Ag / TiO2, and TiO2 / Al / TiO2.

[0123] In some embodiments of this application, the optoelectronic device 100 is a quantum dot light-emitting diode (LED). The optoelectronic device 100 can be a quantum dot LED with a positive structure or an inverted structure. The substrate of the quantum dot LED with a positive structure is connected to the anode 10, and the substrate of the quantum dot LED with an inverted structure is connected to the cathode 40.

[0124] In one embodiment, the optoelectronic device 100 may further include a hole transport layer 50, which is located between the anode 10 and the light-emitting layer 20. The material of the hole transport layer 50 may be selected from organic materials with hole transport capabilities, including but not limited to poly(9,9-dioctylfluorene-CO-N-(4-butylphenyl)diphenylamine) (TFB), polyvinylcarbazole (PVK), poly(N,N'-bis(4-butylphenyl)-N,N'-bis(phenyl)benzidine) (poly-TPD), poly(9,9-dioctylfluorene-co-bis-N,N-phenyl-1,4-phenylenediamine) (PFB), 4,4',4”-tris(carbazole-9-yl)triphenylamine (TCATA), 4,4'-bis(9-carbazole)biphenyl (CBP), and N,N'-diphenyl-N,N'-bis(3-methylphenyl) The hole transport layer 50 may be selected from one or more of the following: 1,1'-biphenyl-4,4'-diamine (TPD), N,N'-diphenyl-N,N'-(1-naphthyl)-1,1'-biphenyl-4,4'-diamine (NPB), poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonic acid) (PEDOT:PSS), Spiro-NPB, Spiro-TPD, doped graphene, undoped graphene, and C60. The hole transport layer 50 may also be selected from inorganic materials with hole transport capabilities, including but not limited to one or more of doped or undoped NiO, MoO3, WO3, V2O5, p-type gallium nitride, CrO3, and CuO.

[0125] In one embodiment, the optoelectronic device 100 may further include a hole injection layer 60, which is located between the anode 10 and the light-emitting layer 20. When the optoelectronic device 100 includes both a hole transport layer 50 and a hole injection layer 60, the hole injection layer 60 is located between the anode 10 and the hole transport layer 50. The material of the hole injection layer 60 may be one or more of the following materials known in the art to have hole injection capabilities: PEDOT:PSS, CuPc (polyester carbonate), TiOPc, m-MTDATA, 2-TNATA, and MoO3. PEDOT:PSS is a polymer, specifically poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid).

[0126] It is understandable that, in addition to the functional layers mentioned above, the optoelectronic device 100 may also have some conventional functional layers that help improve the performance of optoelectronic devices, such as electron blocking layers, hole blocking layers, and interface modification layers.

[0127] It is understandable that the materials of each layer of the optoelectronic device 100 can be adjusted according to the light emission requirements of the optoelectronic device 100.

[0128] The optoelectronic device 100 of this application has an electronic functional layer 30 made of the aforementioned thin film. The thin film material includes the organic polymer provided in this application. Osmium transition metal-organic aromatic groups serve as side chains of the organic polymer, possessing a metal-aromatic dπ-pπ conjugated system. This system can form ordered charge transfer, fulfilling the necessary conditions for electron transport. The main chain is connected to the osmium transition metal-organic aromatic group side chains, which can adjust the potential barrier of the osmium transition metal-organic aromatic groups, adjust the energy levels of the organic polymer, and improve electron mobility, making the energy levels of the organic polymer more compatible with inorganic light-emitting materials or cathode materials, thus improving electron injection performance. Nitrogen doping improves the conductivity and electron transport capability of the organic polymer, thereby enhancing the light-emitting performance of the optoelectronic device. The organic polymer, through its chain structure, has good cross-linking properties and exhibits excellent film-forming properties during film deposition. As the material of the electronic functional layer 30, the organic polymer can prevent excessive charge accumulation at the interfaces between film layers, thereby avoiding degradation of the interface materials and promoting the stability of the optoelectronic device. In quantum dot optoelectronic devices, using organic polymers as electronic functional materials avoids the use of inorganic metal oxides, thus eliminating the fluorescence quenching effect of inorganic metal oxides on quantum dots (QDs). Furthermore, compared to the traditional use of inorganic ZnO materials for the electron transport layer, organic polymers have a more matched energy level arrangement, which is beneficial for achieving good energy level matching with the quantum dot emitting layer and cathode, as well as good interfacial contact with the cathode. This facilitates electron injection, and the organic polymers also possess a better active layer morphology, promoting carrier transport while blocking carrier recombination. This effectively reduces the device's turn-on voltage, resulting in lower power consumption and superior performance.

[0129] This application also provides a display device, including the optoelectronic device provided in this application. The display device can be any electronic product with display function, including but not limited to smartphones, tablets, laptops, digital cameras, digital camcorders, smart wearable devices, smart weighing scales, in-vehicle displays, televisions, or e-book readers. Among them, smart wearable devices can be, for example, smart bracelets, smartwatches, virtual reality (VR) headsets, etc.

[0130] This application also provides a method for fabricating an optoelectronic device 100. Please refer to [link to relevant documentation]. Figure 2 , Figure 2 This is a schematic flowchart of a method for fabricating an optoelectronic device according to an embodiment of this application. In this embodiment, the optoelectronic device 100 is a positive quantum dot light-emitting diode, and the method specifically includes the following steps:

[0131] Step S11: Provide an anode 10 and form a light-emitting layer 20 on the anode 10.

[0132] Step S12: An electronic functional layer 30 is formed on the light-emitting layer 20. The material of the electronic functional layer 30 includes the organic polymer provided in this application.

[0133] Step S13: Form a cathode 40 on the electronic functional layer 30.

[0134] It is understood that when the optoelectronic device 100 further includes a hole transport layer 50, step S11 is: providing an anode 10, and sequentially forming a stacked hole transport layer 50 and a light-emitting layer 20 on the anode 10. Further, when the optoelectronic device 100 further includes a hole injection layer 60, step S11 is: providing an anode 10, and sequentially forming a stacked hole injection layer 60, a hole transport layer 50, and a light-emitting layer 20 on the anode 10.

[0135] Please see Figure 3 , Figure 3 This is a schematic flowchart of another method for fabricating an optoelectronic device provided in this application embodiment. The optoelectronic device 100 in this embodiment is an inverted quantum dot light-emitting diode, specifically including the following steps:

[0136] Step S21: Provide cathode 40.

[0137] Step S22: An electronic functional layer 30 is formed on the cathode 40. The material of the electronic functional layer 30 includes the organic polymer provided in this application.

[0138] Step S23: A light-emitting layer 20 and an anode 10 are sequentially formed on the electronic functional layer 30.

[0139] It is understood that when the optoelectronic device 100 further includes a hole transport layer 50, step S23 involves: sequentially forming a light-emitting layer 20, a hole transport layer 50, and an anode 10 on the electronic functional layer 30. Further, when the optoelectronic device 100 further includes a hole injection layer 60, step S21 involves: sequentially forming a light-emitting layer 20, a hole transport layer 50, a hole injection layer 60, and an anode 10 on the electronic functional layer 30.

[0140] It is understood that when the optoelectronic device 100 further includes other functional layers such as an electron blocking layer, a hole blocking layer, an electron injection layer, and / or an interface modification layer, the fabrication method of the optoelectronic device 100 may also include the step of forming each of the functional layers.

[0141] It should be noted that the anode 10, light-emitting layer 20, electronic functional layer 30, cathode 40, and other functional layers in this application can all be prepared using conventional techniques in the art, including but not limited to solution methods and deposition methods. Solution methods include, but are not limited to, spin coating, coating, inkjet printing, blade coating, dip-coating, immersion, spraying, roller coating, or casting. Deposition methods include chemical methods and physical methods. Chemical methods include, but are not limited to, chemical vapor deposition, continuous ion layer adsorption and reaction, anodic oxidation, electrolytic deposition, or co-precipitation. Physical methods include, but are not limited to, thermal evaporation coating, electron beam evaporation coating, magnetron sputtering, multi-arc ion plating, physical vapor deposition, atomic layer deposition, or pulsed laser deposition. When the anode 10, light-emitting layer 20, electronic functional layer 30, cathode 40, and other functional layers are prepared using solution methods, a drying process must be added.

[0142] It is understandable that the preparation method of optoelectronic device 100 may also include an encapsulation step. The encapsulation material may be acrylic resin or epoxy resin. The encapsulation may be machine encapsulation or manual encapsulation. Ultraviolet curing adhesive may be used. The concentrations of oxygen and water in the environment where the encapsulation step is performed are both below 0.1 ppm to ensure the stability of optoelectronic device 100.

[0143] The technical solutions and effects of this application will be described in detail below through specific embodiments and comparative examples. The following embodiments are only some embodiments of this application and are not intended to limit this application.

[0144] In the embodiments of this application, unless otherwise specified, all materials and reagents used are commercially available.

[0145] Synthesis of Organic Polymer 1:

[0146] Step 1: Synthesize intermediates 1-3

[0147]

[0148] Wherein, [Os] represents OsCl(PPh3)2, PPh3 represents triphenylphosphine, DCM represents dichloromethane, and Me represents methyl.

[0149] Synthetic steps of intermediates 1-3: Under a nitrogen atmosphere and with magnetic stirring, a solution of compound 1-2 (0.57 g, 2.19 mmol) in dichloromethane (2 mL) was added dropwise to a solution of OsCl2(PPh3)3 (1.40 g, 1.46 mmol) and PPh3 (1.91 g, 7.3 mmol) in dichloromethane (20 mL). After the addition was complete, the reaction was allowed to proceed at room temperature for 1 hour. The reaction solution was concentrated to 5 mL under vacuum and then washed with n-hexane (3 times, 50 mL each time) to obtain 1.23 g of solid intermediate 1-3.

[0150] Step 2: Synthesize intermediates 1-6

[0151]

[0152] The structural formulas of catalysts 1-5 are as follows:

[0153]

[0154] Synthesis steps of intermediates 1-6: Under nitrogen atmosphere, 0.17 mmol of intermediate 1-4 was dissolved in 4.2 mL of toluene solution, and then 5 μmol of catalyst 1-5 (concentration 3%) was added. The mixture was stirred at room temperature for 2 hours, followed by the addition of methanol to obtain the precipitate. The product was ultrasonically cleaned with methanol, n-hexane and chloroform, respectively, and then extracted with chlorobenzene. Finally, the product was dried under vacuum to obtain a separated red solid, which was intermediate 1-6.

[0155] Step 3: Organic Polymer 1

[0156]

[0157] The synthesis steps of organic polymer 1 were as follows: 3 mol of intermediate 1-3, 1 mol of intermediate 1-6, and 2 mL of HCl·Et₂O (hydrochloric acid-ether solution) were added to 10 mL of dichloromethane solution to obtain a mixed solution. The mixed solution was stirred at room temperature for 2 hours to obtain a blue solution. The blue solution was then placed in a vacuum environment and evaporated to obtain approximately 3 mL of evaporated solution. The evaporated solution was then washed with 50 mL of Et₂O (ether) to obtain a solid. Finally, the solid was purified by chromatography using eluent and dichloromethane to obtain the purified solid, i.e., organic polymer 1. The 1H NMR parameters of organic polymer 1 are as follows: 1 H NMR (600.1MHz, CD2Cl2): δ=6.81-7.78(br,70H),6.23(d,J=17.71Hz,2H),5.79(br,2H),3.62(br,6H)3.00(br,2H),2.08(br,2H),1.62(br,2H);

[0158] Nuclear magnetic resonance test 31 The P-spectral parameters are as follows: 31 P{ 1 H}-NMR (242.9MHz, CD2Cl2): δ=4.71(br,CPPh3)-0.12(br,OsPPh3).

[0159] Synthesis of Organic Polymer 2:

[0160] Step 1: Synthesize intermediates 2-3

[0161] Where [Os] is OsCl(PPh3)2.

[0162] Synthesis steps of intermediate 2-3: This step is similar to the first step of the synthesis of organic polymer 1, except that compound 1-2 is replaced with compound 2-2 to obtain solid intermediate 2-2 with a yield of 71%.

[0163] Step 2: Synthesize intermediates 2-5:

[0164]

[0165] Where C 12 H 25 It is a straight-chain alkyl group.

[0166] Synthesis steps of intermediate 2-5: Under nitrogen atmosphere, 0.05 mmol of compound 2-4 was dissolved in 600 μL of toluene, and then 2.5 μmol of catalyst 1-5 (concentration 3%) was added. The mixture was stirred at room temperature for 2 h, and then methanol was added to obtain the precipitate. The product was ultrasonically cleaned with methanol, n-hexane and chloroform respectively, and then extracted with chlorobenzene and dried under vacuum to obtain intermediate 2-5.

[0167] Step 3: Synthesize organic polymer 2:

[0168]

[0169] The synthesis steps of organic polymer 2 are as follows: 3 mol of intermediate 2-3, 1 mol of intermediate 2-5, and 2 mL of HCl·Et₂O (hydrochloric acid-ether solution) were added to 10 mL of dichloromethane to obtain a mixed solution. The mixed solution was stirred at room temperature for 2 hours to obtain a blue solution. The blue solution was placed in a vacuum environment and evaporated to obtain an evaporated solution of approximately 3 mL. The evaporated solution was then washed with 50 mL of Et₂O (ether) to obtain a solid. Finally, the solid was purified by chromatography using eluent and dichloromethane to obtain the purified solid, i.e., organic polymer 2. The 1H NMR parameters of organic polymer 2 are as follows:

[0170] 1 ¹H NMR (600.1MHz, CD₂Cl₂): δ=6.93-8.31(br, 64H), 5.84(d, J=16.54Hz, 1H), 5.17(br, 2H), 3.73(br, 2H), 0.70-1.40(br, 52H); NMR measurements 31 The P-spectral parameters are as follows: 31P{1H}-NMR (242.9MHz, CD2Cl2): δ = 4.49 (br, CPPh3), -1.58 (br, OsPPh3);

[0171] Synthesis of Organic Polymer 3:

[0172]

[0173] Step 1: Synthesize S1:

[0174] Synthesis of S1: In a dried flask containing 1,6-heptadiyne (CAS: 2396-63-6) (5.00 mL, 4.02 g, 43.6 mmol) and anhydrous tetrahydrofuran (CAS: 109-99-9) (100 mL), EtMgBr (ethyl magnesium bromide CAS: 2386-64-3) (43.6 mL, 1.0 M) was added dropwise at 0 °C for 1 hour. After stirring at room temperature for 1 hour, the reaction mixture was cooled to 0 °C, and 3-trimethylsilylpropynaldehyde (CAS: 2975-46-4) (6.44 mL, 43.6 mmol) was added in a single batch. The resulting mixture was stirred at 0 °C for 1 hour, and then at room temperature for 6 hours. The organic layer was separated, and the aqueous layer was extracted with Et2O (3 × 150 mL). The extract was washed with brine (2 × 50 mL), dried over magnesium sulfate, and then concentrated to dryness. S1 was obtained.

[0175] Step 2: S2 Synthesis

[0176] Synthesis steps of S2: S1 (5.00 g, 22.9 mmol) was added to anhydrous tetrahydrofuran (120 mL) solution, and 27.5 mmol of (n-Bu)4NF (tetra-n-butylammonium fluoride CAS: 429-41-4) tetrahydrofuran (27.5 mL) solution was added at 0 °C. The mixture was stirred at the same temperature until the starting material disappeared (30 min). The mixture was then poured into a saturated aqueous solution of ammonium chloride (50 mL), extracted with Et2O (3 × 150 mL), and washed with saturated brine (2 × 50 mL). The organic layer was dried over magnesium sulfate and concentrated to dryness to obtain S2.

[0177] Step 3: Synthesize compound 3-1:

[0178]

[0179] Synthetic steps of compound 3-1: A 5 mL solution of S2 (1.20 g, 4.58 mmol) in dichloromethane was slowly added to a 150 mL solution of OsCl2(CO)(PPh3)2 (CAS: 07499-57-8) (4.01 g, 3.83 mmol) and triphenylphosphine (5.02 g, 19.1 mmol) in dichloromethane. The reaction mixture was stirred at RT for 1 h to obtain a brown solution. The solution was evaporated to 15 mL under vacuum and then washed with Et2O (3 × 200 mL) to obtain a brown solid. The solid was purified by rapid silica gel chromatography (eluent: dichloromethane / methanol = 20 / 1) to obtain compound 3-1.

[0180] Step 4: Synthesize organic polymer 3:

[0181]

[0182] The synthesis steps of organic polymer 3 are as follows: 3 mol of intermediate 3-1, 1 mol of intermediate 2-5 and 2 mL of HCl·Et2O (hydrochloric acid ether solution) are added to 10 mL of dichloromethane solution to obtain a mixed solution. The mixed solution is stirred at room temperature for 2 hours to obtain a blue solution. The blue solution is then evaporated under vacuum to obtain an evaporated solution with a volume of about 3 mL. The evaporated solution is then washed with 50 mL of Et2O (diethyl ether) to obtain a solid. Finally, the solid is purified using an eluent and dichloromethane to obtain the purified solid, which is organic polymer 3.

[0183] Example 1

[0184] The fabrication method of quantum dot light-emitting diodes is as follows:

[0185] Step 1: Provide an ITO substrate as the anode with a thickness of 100nm.

[0186] Step 2: Deposit a layer of TFB on the substrate to form a hole transport layer with a thickness of 20nm.

[0187] Step 3: Deposit 20 mg / mL cadmium telluride red quantum dots on the hole transport layer to form a quantum dot luminescent layer.

[0188] Step 4: Deposit the organic polymer 1 formed in Example 1 on the quantum dot light-emitting layer to form an electron transport layer, wherein the thickness of the electron transport layer is 40 nm.

[0189] Step 5: Deposit a layer of metallic Ag on the electron transport layer to form a cathode, wherein the thickness of metallic Ag is 100 nm.

[0190] Example 2

[0191] This embodiment provides a quantum dot light-emitting diode and its preparation method. Compared with the quantum dot light-emitting diode of Embodiment 1, the only difference of the quantum dot light-emitting diode of this embodiment is that: in step 4, the organic polymer 2 formed in Embodiment 1 is deposited on the quantum dot light-emitting layer to form an electron transport layer.

[0192] Example 3

[0193] This embodiment provides a quantum dot light-emitting diode and its preparation method. Compared with the quantum dot light-emitting diode of Embodiment 1, the only difference of the quantum dot light-emitting diode of this embodiment is that: in step 4, the organic polymer 3 formed in Embodiment 1 is deposited on the quantum dot light-emitting layer to form an electron transport layer.

[0194] Comparative Example 1

[0195] The difference between the preparation method of the optoelectronic device in Comparative Example 1 and Example 1 is that the electron transport layer uses ZnO inorganic material and the thickness of the electron transport layer is 40 nm.

[0196] Comparative Example 2

[0197] The difference between the preparation method of the optoelectronic device in Comparative Example 2 and Example 1 is that the electron transport layer uses a metal heteropentadiene, with the structure referring to intermediates 1-3 of the synthesized organic polymer 1 in Example 1, and the thickness of the electron transport layer is 40 nm.

[0198] The quantum dot light-emitting diodes in Example 1, Comparative Example 1, and Comparative Example 2 were subjected to performance tests. The performance test results are detailed in Table 1 below, including the external quantum efficiency (EQE) and the turn-on voltage (V). The external quantum efficiency refers to the ratio of the number of collected electrons to the number of incident photons, which can also be simply understood as the luminous efficiency of the optoelectronic device. The turn-on voltage affects the working efficiency and lifespan of the optoelectronic device; the higher the turn-on voltage, the higher the working efficiency and the longer the lifespan of the optoelectronic device.

[0199] Table 1:

[0200]

[0201] As shown in Table 1 above, the optoelectronic devices of Examples 1 to 3 have a higher external quantum efficiency (EQE) compared to the optoelectronic device of Comparative Example 1. This indicates that using the organic polymers of Examples 1 to 3 as the electron transport layer can improve electron transport capability through the high conductivity of the first polymer, resulting in more balanced carrier transport, reducing non-radiative recombination, and effectively overcoming the problems of unbalanced carrier transport and non-radiative recombination in the traditional electron transport layer using ZnO inorganic materials, thus improving the luminous efficiency of the device. Furthermore, the optoelectronic devices of Examples 1 to 3 have a lower turn-on voltage compared to the optoelectronic device of Comparative Example 1. This indicates that the organic polymers of Examples 1 to 3 have a more matched energy level arrangement than the traditional electron transport layer using ZnO inorganic materials, which is beneficial for achieving good energy level matching with the quantum dot emitting layer and cathode, as well as good interfacial contact with the cathode, facilitating electron injection. They also have a better active layer morphology, which can promote carrier transport while blocking carrier recombination, thereby effectively reducing the turn-on voltage, lowering power consumption, and improving performance.

[0202] As shown in Table 1, the optoelectronic devices of Examples 1 to 3 exhibit higher external quantum efficiency (EQE) compared to the optoelectronic device of Comparative Example 2. This indicates that the organic polymer used as the electron transport layer in Examples 1 to 3, compared to the electron transport layer using a single metal heteropentalyne, provides a more balanced carrier transport, reduces non-radiative recombination, and improves the luminous efficiency of the device. Furthermore, the optoelectronic devices of Examples 1 to 3 show lower turn-on voltage compared to the optoelectronic device of Comparative Example 2. This demonstrates that the organic polymer obtained by crosslinking the first polymer with metal heteropentalyne facilitates electron injection, promotes carrier transport, and simultaneously blocks carrier recombination, thereby effectively reducing the turn-on voltage, resulting in lower power consumption and superior performance.

[0203] The organic polymers, thin films, optoelectronic devices, and display devices provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An organic polymer, characterized in that, It has a structure as shown in general formula (I): Wherein, [Os] is OsAL2, OsA2L or OsL3, A is selected from -H, halogen, -SCN or -CN, and L is selected from at least one of phosphine ligands, carbonyl ligands, pyridine ligands, nitrogen heterocyclic carbene ligands, nitrile ligands and isocyanate two-electron ligands; Each time R1 appears, it is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl; Each occurrence of R2 is independently selected from O or CR5R6; R5 and R6 are independently selected from -H, substituted or unsubstituted alkyl, ester, amide, amino, carboxyl, alkenyl, ynyl, or combinations thereof having 1 to 20 carbon atoms; R3 is selected from at least one of aromatic groups having 6-60 carbon atoms and alkyl groups having 2-20 carbon atoms; Each time R4 appears, it is independently selected from CR7 or N; R7 is independently selected from -H, -D, or a straight-chain alkyl group having 1-20 carbon atoms, a straight-chain alkoxy group having 1-20 carbon atoms, a straight-chain thioalkoxy group having 1-20 carbon atoms, a branched alkyl group having 3-20 carbon atoms, a cyclic alkyl group having 3-20 carbon atoms, a branched alkoxy group having 3-20 carbon atoms, a cyclic alkoxy group having 3-20 carbon atoms, a branched thioalkoxy group having 3-20 carbon atoms, a cyclic thioalkoxy group having 3-20 carbon atoms, a silyl group, or a group having 1-20 carbon atoms. Ketoyl group, or alkoxycarbonyl group with 2-20 carbon atoms, or aryloxycarbonyl group with 7-20 carbon atoms, cyano, carbamoyl, halocarbamoyl, formyl, isocyano, isocyanate, thiocyanate or isothiocyanate, hydroxyl, nitro, -CF3, -Cl, -Br, -F, -I, or substituted or unsubstituted aromatic group with 6-60 ring atoms, or substituted or unsubstituted heteroaryl group with 5-60 ring atoms, or substituted or unsubstituted aryloxy or heteroaryloxy group with 5-60 ring atoms, or combinations of these groups; Z - The anion is selected from F. - Cl - ,Br - I - BF4 - H2PO4 - C2O4 2- SO4 2- CF3SO3 - CH3COO - (CF3SO2)2N - NO3 - ClO4 - PF6 - and BPh4 - At least one of them; n is an integer from 3 to 300.

2. The organic polymer according to claim 1, characterized in that, The organic polymer is selected from one of general formulas (II-1) or (II-2): 。 3. The organic polymer according to claim 1 or 2, characterized in that, L is selected from at least one of triphenylphosphine, trimethylphosphine, triethylphosphine, tripropylphosphine, triisopropylphosphine, tritert-butylphosphine, tricyclohexylphosphine, methylpyridine, ethylpyridine, 1,4-bipyridine, 1,2-bis(4-pyridyl)ethylene, vinylpyridine, ethynylpyridine, pyridineboronic acid, aminopyridine, cyanopyridine, mercaptopyridine, dimethylaminopyridine, phenylpyridine, 1,2-bis(4-pyridyl)ethane, imidazole-type nitrogen heterocyclic carbene, imidazole-type nitrogen heterocyclic carbene, thiazole-type nitrogen heterocyclic carbene, triazole-type nitrogen heterocyclic carbene, acetonitrile, propionitrile, benzonitrile, cyclohexylisocyanate, tert-butylisocyanate, and phenylisocyanate.

4. The organic polymer according to claim 3, characterized in that, [Os] is selected from at least one of OsCl(PPh3)2, OsH(PPh3)2, OsCl(PEt3)2, and OsCl(PMe3)2.

5. The organic polymer according to claim 1 or 2, characterized in that, R1 is selected from -H, phenyl, bisphenyl, triphenyl, naphthyl, anthracene, phenanthryl, pyrenyl, thienyl, bisthienyl, trithienyl, thienylethenyl, thiazolyl, thiadiazolyl, anthiadiazolyl, anthiadiazolyl, furanyl, pyridyl, pyrroleyl, porphyrinyl, fluorenyl, bisfluorenyl, trifluorenyl, carbazoleyl, biscarbazoleyl, tricarbazoleyl, benzothiadiazolyl, tetraphenylethylene, hexabenzo[a]keratyl, pyridine ... Pyrrolopyrrolodione, benzodithiophene, indahedronodithiophene, silanyl, dithienocyclofluorendienyl, dithienothiophene, dithienopyrrolo, triphenylamino, pyrrolopyrrolodione, naphthodithiadiazolyl, naphthalenetetracarboxylic acid diimide, perylenetetracarboxylic acid diimide, isoindigo, thienopyrrolodione, benzopyrrolodione, benzotriazolyl, thiadiazobenzotriazolyl, pyridinothiadiazolyl, , , , , , , , At least one of them; and / or R2 is selected from O, CH2, or C(COOMe)2; and / or R3 is selected from at least one of the following structures: 、 、 、 、 、 、 、 ； Where C 12 H 25 It is a straight-chain alkyl group.

6. The organic polymer according to claim 1, characterized in that, The organic polymer is selected from the following structures: 。 7. A thin film, characterized in that, The material of the thin film includes an organic polymer with a structure as shown in general formula (I): Wherein, [Os] is OsAL2, OsA2L or OsL3, A is selected from -H, halogen, -SCN or -CN, and L is selected from at least one of phosphine ligands, carbonyl ligands, pyridine ligands, nitrogen heterocyclic carbene ligands, nitrile ligands and isocyanate two-electron ligands; Each time R1 appears, it is independently selected from -H, substituted or unsubstituted aryl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl; Each occurrence of R2 is independently selected from O or CR5R6; R5 and R6 are independently selected from -H, substituted or unsubstituted alkyl, ester, amide, amino, carboxyl, alkenyl, ynyl, or combinations thereof having 1 to 20 carbon atoms; R3 is selected from at least one of aromatic groups having 6-60 carbon atoms and alkyl groups having 2-20 carbon atoms; Each time R4 appears, it is independently selected from CR7 or N; R7 is independently selected from -H, -D, or a straight-chain alkyl group having 1-20 carbon atoms, a straight-chain alkoxy group having 1-20 carbon atoms, a straight-chain thioalkoxy group having 1-20 carbon atoms, a branched alkyl group having 3-20 carbon atoms, a cyclic alkyl group having 3-20 carbon atoms, a branched alkoxy group having 3-20 carbon atoms, a cyclic alkoxy group having 3-20 carbon atoms, a branched thioalkoxy group having 3-20 carbon atoms, a cyclic thioalkoxy group having 3-20 carbon atoms, a silyl group, or a group having 1-20 carbon atoms. Ketoyl group, or alkoxycarbonyl group with 2-20 carbon atoms, or aryloxycarbonyl group with 7-20 carbon atoms, cyano, carbamoyl, halocarbamoyl, formyl, isocyano, isocyanate, thiocyanate or isothiocyanate, hydroxyl, nitro, -CF3, -Cl, -Br, -F, -I, or substituted or unsubstituted aromatic group with 6-60 ring atoms, or substituted or unsubstituted heteroaryl group with 5-60 ring atoms, or substituted or unsubstituted aryloxy or heteroaryloxy group with 5-60 ring atoms, or combinations of these groups; Z - The anion is selected from F. - Cl - ,Br - I - BF4 - H2PO4 - C2O4 2- SO4 2- CF3SO3 - CH3COO - (CF3SO2)2N - NO3 - ClO4 - PF6 - and BPh4 - At least one of them; n is an integer from 3 to 300.

8. The thin film according to claim 7, characterized in that, The structure of the organic polymer is selected from one of general formulas (II-1) or (II-2): 。 9. The thin film according to claim 7 or 8, characterized in that, [Os] is selected from at least one of OsCl(PPh3)2, OsH(PPh3)2, OsCl(PEt3)2, and OsCl(PMe3)2; and / or R1 is selected from -H, phenyl, bisphenyl, triphenyl, naphthyl, anthracene, phenanthryl, pyrenyl, thienyl, bisthienyl, trithienyl, thienylethenyl, thiazolyl, thiadiazolyl, anthiadiazolyl, anthiadiazolyl, furanyl, pyridyl, pyrroleyl, porphyrinyl, fluorenyl, bisfluorenyl, trifluorenyl, carbazoleyl, biscarbazoleyl, tricarbazoleyl, benzothiadiazolyl, tetraphenylethylene, hexabenzo[a]keratyl, pyridine ... Pyrrolopyrrolodione, benzodithiophene, indahedronodithiophene, silanyl, dithienocyclofluorendienyl, dithienothiophene, dithienopyrrolo, triphenylamino, pyrrolopyrrolodione, naphthodithiadiazolyl, naphthalenetetracarboxylic acid diimide, perylenetetracarboxylic acid diimide, isoindigo, thienopyrrolodione, benzopyrrolodione, benzotriazolyl, thiadiazobenzotriazolyl, pyridinothiadiazolyl, , , , , , , , At least one of them; and / or R2 is selected from O, CH2, C(COOMe)2; and / or R3 is selected from at least one of the following structures: 、 、 、 、 、 、 、 ； Where C 12 H 25 It is a straight-chain alkyl group.

10. The thin film according to claim 7 or 8, characterized in that, The organic polymer is selected from the following structures: 。 11. An optoelectronic device, characterized in that, It includes an anode, a light-emitting layer, an electronic functional layer, and a cathode stacked together, wherein the material of the electronic functional layer includes the organic polymer described in any one of claims 1-6 or the electronic functional layer is a thin film described in any one of claims 7-10.

12. The optoelectronic device according to claim 11, characterized in that, The material of the light-emitting layer is an organic light-emitting material or a quantum dot light-emitting material. The organic light-emitting material is selected from at least one of diaromatic anthracene derivatives, stilbene aromatic derivatives, pyrene derivatives, fluorene derivatives, blue-emitting TBPe fluorescent materials, green-emitting TTPA fluorescent materials, orange-emitting TBRb fluorescent materials, and red-emitting DBP fluorescent materials. The quantum dot light-emitting material includes group II-VI compounds, group III-V compounds, and group I... III At least one of group VI compounds; the group II-VI compounds are selected from at least one of CdSe, CdS, CdTe, ZnSe, ZnS, CdTe, ZnTe, CdZnS, CdZnSe, CdZnTe, ZnSeS, ZnSeTe, ZnTeS, CdSeS, CdSeTe, CdTeS, CdZnSeS, CdZnSeTe, and CdZnSTe; the group III-V compounds are selected from InP, InAs, GaP, GaAs, GaSb, AlN, AlP, InAsP, InNP, InNSb, GaAlNP, and InAlNP; the group I III The group VI compounds are selected from at least one of CuInS2, CuInSe2 and AgInS2.

13. A display device, characterized in that, The display device includes the optoelectronic device as described in claim 11 or 12.

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