Fused ring arylamine compound, application thereof and organic electroluminescent device containing compound
An organic electronic device, a technology of fused ring aromatic amine, applied in the field of organic electroluminescent devices, can solve the problems of affecting the efficiency and life of the device, affecting the stability of the device, and deteriorating the performance of the device, so as to improve the life of the device, improve the efficiency, guarantee the The effect of stability
Active Publication Date: 2021-07-13
ZHEJIANG HONGWU TECH CO LTD
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Problems solved by technology
In the common triarylamine structure, the substitution position of different groups is usually located at the para position of the aromatic amine. This kind of conjugated large planar molecule is particularly easy to stack, not only easy to block holes during evaporation, but also at different temperatures, such The performance of the device where the material is located will deteriorate, affecting the stability of the device, thereby affecting the efficiency and life of the device
Method used
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Embodiment 8～17
[0113] Examples 8-17: Fabrication of an organic electroluminescence device used as an electron blocking layer material
[0114] The device structures of Examples 8-17 and Comparative Examples 4-6 are as follows, the difference is that the EBL material is replaced:
[0115]The device structure of its OLED is specifically: ITO (130) / HATCN (15) / HTL (60) / EBL (5) / BH:BD (20, weight %) / HBL (10) / ETL:Liq (25, 50% by weight) / Liq(1) / Al(80), it should be noted that the numbers in parentheses represent the film thickness (unit: nm).
[0116] The device performances of the example molecules and comparative molecules of the present invention as EBL are summarized in the table.
[0117] Table 6
[0118]
[0119]
[0120] It can be seen from Table 6 that, compared with the prior art, using the material examples 8-17 of the present invention can improve the efficiency while keeping the driving voltage of the OLED basically unchanged. Compared with comparative example 4, CE1000 of devic...
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Abstract
The invention discloses a fused ring arylamine compound, application thereof and an organic electroluminescent device containing the compound. The fused ring arylamine compound is formed by combining a formula (1) and a formula (2). In the formulas, Z is independently selected from S or O; Y is independently selected from C or Si; and ring X is independently selected from the group consisting of a substituted or unsubstituted cycloalkyl group having 3-50 ring-forming carbon atoms and a substituted or unsubstituted divalent heterocyclic group having 4-50 ring-forming atoms. The compound provided by the invention is used as a main body material or an electron blocking material of an organic electroluminescent device, has a three-dimensional effect, and can effectively inhibit aggregation and ensure the stability of the device, so that the service life of the device is greatly prolonged; and O / S ortho-position substitution on dibenzofuran / dibenzothiophene can regulate the energy level and mobility of the material, so the device efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of organic electroluminescence, in particular to a novel organic compound and its application, and an organic electroluminescent device containing the compound. Background technique [0002] Organic Light Emitting Devices (OLED: Organic Light Emitting Devices) is a current-driven thin-film device similar to a sandwich structure, with a single or multiple organic functional material layers sandwiched between the anode and cathode. Under the action of an electric field in an OLED, the holes generated by the anode and the electrons generated by the cathode will move, inject into the hole transport layer and the electron transport layer respectively, and migrate to the light-emitting layer. When the two meet and recombine in the light-emitting layer, a Energy excitons, which excite light-emitting molecules and eventually produce visible light. OLED has the characteristics of self-illumination, wide viewing angl...
Claims
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IPC IPC(8): C07D307/94C07D333/78C07D405/04C07D405/12C07D405/14C07D409/12C07F7/08H01L51/54H01L51/50
CPCC07D405/12C07D405/04C07D405/14C07D409/12C07D307/94C07D333/78C07F7/0816H10K85/624H10K85/636H10K85/633H10K85/615H10K85/631H10K85/654H10K85/6576H10K85/6574H10K85/40H10K85/6572H10K50/18H10K50/11Y02E10/549
Inventor 王彦杰朱运会张其胜
Owner ZHEJIANG HONGWU TECH CO LTD