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Compound, hole transport material and organic electroluminescent device

A compound and chemical bond technology, applied in the field of organic electroluminescent devices, can solve the problems of OLED display device display function, low hole migration rate, poor energy level matching, etc., which restrict OLED luminous efficiency, achieve excellent display effect and improve luminous efficiency , the effect of prolonging life

Pending Publication Date: 2020-09-08
YANTAI XIANHUA CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hole transport materials currently used in OLEDs can achieve low hole mobility and poor energy level matching with adjacent layers, which seriously restricts the luminous efficiency of OLEDs and the display function of OLED display devices.

Method used

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  • Compound, hole transport material and organic electroluminescent device
  • Compound, hole transport material and organic electroluminescent device
  • Compound, hole transport material and organic electroluminescent device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] The glass plate coated with the ITO transparent conductive layer is ultrasonically treated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in acetone-ethanol mixed solvent, baked in a clean environment until the water is completely removed, and then cleaned with ultraviolet light. Light and ozone cleaning, and bombardment of the surface with a beam of low-energy cations;

[0154] Then, the above-mentioned glass substrate with the anode is placed in a vacuum chamber, and the vacuum is evacuated to less than 10 -5 Torr, on the above-mentioned anode layer film vacuum evaporation hole injection layer, hole injection layer material is HT-11 and the p-type dopant (p-dopant) that mass ratio is 3%, wherein, evaporation rate is 0.1 nm / s, the evaporated film thickness is 10nm, the material and p-type dopant of the hole injection layer are:

[0155]

[0156] Then, the hole transport material A1 material is vacuum-evaporated on the hole injec...

Embodiment 2-7

[0165] Except that A1 is replaced by A5, A12, A13, A14, A15, and A23 respectively, the rest is the same as in Example 1. See Table 1 for details.

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PUM

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Abstract

Embodiments of the present invention provide a compound of general formula (I), and can be used in hole transport materials. The compound has a diversified fused heterocyclic arylamine connected parent structure and is high in bond energy between atoms and has good thermal stability and is beneficial to intermolecular solid accumulation and is high in hole transition capability and can effectivelyreduce the driving voltage of an organic electroluminescent device, improve the current efficiency of the organic electroluminescent device and prolong the service life of the organic electroluminescent device when being used as a hole transport layer material. The invention further provides the organic electroluminescent device and a display device containing the compound shown in the general formula (I).

Description

technical field [0001] The invention relates to the field of organic light-emitting display technology, in particular to a hole transport material and an organic electroluminescent device containing the hole transport material. Background technique [0002] Electroluminescence (EL) refers to the phenomenon that luminescent materials emit light when excited by current and voltage under the action of an electric field. It is a luminescent process that directly converts electrical energy into light energy. 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 requires a backlight source, has a large viewing angle and low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturin...

Claims

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Application Information

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IPC IPC(8): C07D209/94C07D487/04C07D491/048C07D495/04C07D519/00H01L51/54H01L51/50
CPCC07D495/04C07D491/048C07D487/04C07D209/94C07D519/00H10K85/624H10K85/636H10K85/626H10K85/633H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/657H10K85/6572H10K50/15Y02E10/549
Inventor 邢其锋丰佩川单鸿斌孙伟胡灵峰陈跃
Owner YANTAI XIANHUA CHEM TECH CO LTD
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