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Compound, hole transport material, organic light-emitting device and display device

A compound and independent technology, applied in the field of organic light-emitting display, can solve the problems of low hole migration rate, poor energy level matching, restricting the display function of OLED luminous efficiency OLED display device, etc., to improve luminous efficiency, prolong life, excellent show effect

Active Publication Date: 2021-01-05
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, organic light-emitting device and display device
  • Compound, hole transport material, organic light-emitting device and display device
  • Compound, hole transport material, organic light-emitting device and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] 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;

[0163] 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, HT-11 was vacuum-deposited on the above-mentioned anode layer film as a hole injection layer, the evaporation rate was 0.1nm / s, and the thickness of the evaporation film was 10nm. The material of the hole injection layer was shown in the following formula:

[0164]

[0165] Then, on the hole injection layer, the hole transport material A1 is vacuum evaporated as the hole transport layer, the evaporation rate is 0.1nm / ...

Embodiment 2-7

[0173] Except that A6, A12, A13, A15, A18, and A23 in Synthesis Examples 2-7 were used instead of A1, the rest were the same as in Example 1.

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PUM

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Abstract

The invention provides a compound of a general formula (I), which can be used in hole transport materials. The compound has a parent structure of asymmetric diarylamine substituted dibenzoheterocycle,has high bond energy between atoms, has good thermal stability, is beneficial to solid accumulation between molecules, and has strong hole transition capability. When the compound is used as a hole transport material, the compound can effectively reduce the driving voltage of an organic light-emitting device, improve the luminous efficiency and prolong the service life of the organic light-emitting device. The invention further provides an organic light-emitting device containing the compound shown in the general formula (I) and a display device .

Description

technical field [0001] The present application relates to the field of organic light-emitting display technology, in particular to a compound, a hole transport material, an organic electroluminescent device and a display device. 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 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 manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have very broad application prospects. With the continuous advancement of OLED technology in the two major fields of lighti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D307/91C07D333/76H01L51/54H01L51/50
CPCC07D307/91C07D333/76H10K85/624H10K85/626H10K85/636H10K85/633H10K85/615H10K85/6576H10K85/6574H10K50/15
Inventor 邢其锋丰佩川孙伟胡灵峰陈跃马艳
Owner YANTAI XIANHUA CHEM TECH CO LTD
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