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

A compound and unsubstituted technology, applied in the field of organic light-emitting display, can solve the problems of restricting the display function and development of OLED display devices, inability to balance efficiency and life, and low hole migration rate, achieving high bond energy, reducing driving voltage, The effect of improving luminous efficiency

Active Publication Date: 2020-11-24
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 migration rates, poor energy level matching with adjacent layers, and cannot take into account both efficiency and life, which seriously restricts the display of OLED display devices. function and development

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0185] The glass plate coated with indium tin oxide (ITO) transparent conductive layer is ultrasonically treated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in acetone-ethanol mixed solvent, and baked in a clean environment until completely removed Moisture, cleaned with UV light and ozone, and bombarded with a beam of low-energy cations;

[0186] 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:

[0187]

[0188] On the hole injection layer, the A2 material is vacuum evaporated as the hole transport layer, the evaporation rate is 0.1nm / s, and the evaporation film thickness is 80nm;

[0189] ...

Embodiment 2-10

[0196]Except that A7, A4, A6, A13, A16, A21, A24, A5, A17 in Synthesis Examples 2-10 were used instead of A2, the rest were the same as in Example 1.

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Abstract

The invention provides a compound shown as a general formula (I), which can be used for an organic electroluminescent device as a hole transport material. The compound has fluorene-substituted and arylamine and carbazole-substituted phenyl arylamine parent structures, is high in interatomic bond energy and high in thermal stability, facilitates intermolecular solid-state accumulation and is high in hole transition capacity. When the compound is applied to a hole transport layer, a proper energy level is formed between the compound and an adjacent layer, hole injection and migration are facilitated, and the driving voltage can be effectively reduced; meanwhile, the hole migration rate is relatively high, and the light-emitting efficiency of a device can be effectively improved. The invention also provides the hole transport material containing the compound shown in the general formula (I), an organic electroluminescent device and a display device.

Description

technical field [0001] The invention relates to the field of organic light-emitting display, 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 lighting and display, organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D491/048C07D209/86C07D487/04C07D209/80C07D405/12C07D409/12C07D401/12C07D209/88C07D209/94H01L51/50H01L51/54
CPCC07D491/048C07D209/86C07D487/04C07D209/80C07D405/12C07D409/12C07D401/12C07D209/88C07D209/94H10K85/622H10K85/626H10K85/615H10K85/6576H10K85/6574H10K85/6572H10K85/657H10K50/15
Inventor 邢其锋丰佩川韩岳胡灵峰陈跃陈雪波马艳
Owner YANTAI XIANHUA CHEM TECH CO LTD
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