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Compound, electron transport material and organic electroluminescent device

A technology of compounds and hydrogen atoms, which is applied in the fields of compounds, electron transport materials and organic electroluminescent devices, can solve the problems of restricting the luminous efficiency of OLED display devices, poor matching of energy levels in adjacent layers, and low electron mobility. Achieve excellent display effect, prolong service life and improve luminous efficiency

Inactive Publication Date: 2021-08-17
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 current electron transport materials used in OLEDs can achieve low electron mobility, poor film formation, and poor energy level matching with adjacent layers, which seriously restricts the luminous efficiency of OLEDs and OLED display devices. The display function

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0160] 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;

[0161] 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, the hole injection layer material is a hole transport material HT-4 and a mass ratio of 3% p-type dopant (p-1), wherein, evaporation The plating rate is 0.1nm / s, the evaporated film thickness is 10nm, the hole transport material HT-4 and the p-type dopant (p-1) are as follows:

[0162]

[0163] Then, on the hole injection layer, the hole...

Embodiment 2-5

[0173] Except that A1 is replaced by A3, A6, A11 and A23 respectively, the others are the same as in Example 1. See Table 1 for details.

Embodiment 6

[0175] Except that compound GPH-44 was used instead of GHP-16 and compound GD04 was used instead of RPD-1, the rest was the same as in Example 1.

[0176] The organic electroluminescence device of this embodiment emits green light.

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Abstract

The present application provides a compound of general formula (I), which can be used in an electron transport material. The compound is high in bond energy among atoms, good in thermal stability, beneficial to solid-state accumulation among molecules, high in electron transition capacity and capable of effectively reducing the driving voltage of an organic electroluminescent device, improving the current efficiency of the organic electroluminescent device and prolonging the service life of the organic electroluminescent device when being used as the electron transport material. The invention also provides an organic electroluminescent device containing the compound of 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, an electron transport material and an organic electroluminescent device. Background technique [0002] Electroluminescence (EL) refers to the phenomenon that luminescent materials emit light under the action of an electric field and are excited by current and electric field. It is a luminescence 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 manufacturing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/22C07D401/14C07D405/14C07D213/57H01L51/50H01L51/54
CPCC07D213/22C07D401/14C07D405/14C07D213/57H10K85/615H10K85/654H10K85/6574H10K85/6572H10K50/16
Inventor 邢其锋丰佩川李玉彬马艳胡灵峰陈跃
Owner YANTAI XIANHUA CHEM TECH CO LTD
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