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An organic electroluminescent device

An electroluminescent device and a luminescent technology, applied in the field of new general formula compounds, can solve problems such as unsatisfactory performance

Active Publication Date: 2020-11-13
BEIJING ETERNAL MATERIAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The performance of the currently known electron transport materials is not ideal, and the industry still urgently needs to develop new electron transport materials

Method used

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  • An organic electroluminescent device
  • An organic electroluminescent device
  • An organic electroluminescent device

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Embodiment Construction

[0077] The following describes the preparation of representative compounds of the present invention with reference to the following examples. Since the compounds of the present invention have the same skeleton, those skilled in the art can easily synthesize other compounds of the present invention through known functional group conversion methods based on these preparation methods. Hereinafter, the preparation method and light-emitting property measurement of the light-emitting device including the compound are also provided.

[0078] The preparation process of the compound of the invention is simple and easy, the raw materials are easy to obtain, and it is suitable for mass production and scale-up.

[0079] Various chemicals used in the synthesis examples such as petroleum ether, ethyl acetate, n-hexane, toluene, tetrahydrofuran, dichloromethane, dioxane, ethanol, potassium phosphate, butyl lithium, N-bromobutane Basic chemical raw materials such as imide, tris(dibenzylidene...

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Abstract

The invention discloses an organic electroluminescent device, which comprises a first electrode, a second electrode and one or more organic layers located between the first electrode and the second electrode, and the organic layer includes at least a luminescent layer and an electron transport layer, the thickness of the electron transport layer is 5-100nm, and at least one compound represented by formula (I) is included in the electron transport layer: wherein L 1 and L 2 are independently selected from chemical bonds, C 6 ~C 12 Arylene or condensed aromatic hydrocarbon group, C 3 ~C 12 Heteroarylene or condensed heteroarene group; R 1 , R 2 , R 3 , R 4 , R 5 independently selected from hydrogen, halogen, cyano, nitro, C 1 ~C 10 Alkylene, C 6 ~C 30 Substituted or unsubstituted aryl or condensed aromatic hydrocarbon group, C 3 ~C 30 A substituted or unsubstituted heteroaryl or fused heteroaryl hydrocarbon group, R 2 with R 5 Can be connected to each other to form a ring structure; Ar 1 and Ar 2 are independently selected from C 6 ~C 30 Substituted or unsubstituted aryl or condensed aromatic hydrocarbon group, C 3 ~C 30 A substituted or unsubstituted heteroaryl or fused heteroaromatic hydrocarbon group. The organic electroluminescent device of the invention has the advantages of low operating voltage and high luminous efficiency.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, and more specifically, the invention relates to a novel organic electroluminescence device, which adopts a new type of general formula compound. Background technique [0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It needs a backlight source, has a large viewing angle, low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have broad application prospects. [0003] With the continuous advancement of OLED technology in the two major fields of lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D239/74C07D401/14C07D403/10C07D405/14C07D403/14C09K11/06H01L51/50H01L51/54
CPCC09K11/06C07D239/74C07D401/14C07D403/10C07D403/14C07D405/14C09K2211/1044C09K2211/1088C09K2211/1029C09K2211/1011C09K2211/1007H10K85/623H10K85/626H10K85/615H10K85/654H10K85/6574H10K85/6572H10K50/16
Inventor 邢其锋李之洋刘叔尧任雪艳
Owner BEIJING ETERNAL MATERIAL TECH