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Compound, electron transport material and organic electroluminescent device

A compound and hydrogen atom technology, applied in the field of organic electroluminescent devices, can solve the problems of OLED display device display function, low electron migration rate, and poor energy level matching that restrict OLED luminous efficiency, achieve excellent display effect and improve luminous efficiency , the effect of prolonging life

Pending Publication Date: 2020-12-25
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 electron transport materials currently used in OLEDs can achieve low electron 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, 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

[0192] 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;

[0193] 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, the hole injection layer is vacuum evaporated on the above-mentioned anode layer film, the material of the hole injection layer is HT-11 and a p-type dopant (p-1) with a mass ratio of 3%, wherein, the 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:

[0194]

[0195] Then, on the hole injection layer, the hole transport material HT-5 ...

Embodiment 2-9

[0204] Except that A1 is replaced by A8, A12, A17, A18, A23, A24, A25, A30 respectively, the rest is the same as that of Example 1. See Table 1 for details.

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PUM

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Abstract

The present application provides a compound as shown in a general formula (I), which can be used in electron transport materials. The compound has a parent structure of a duplex fluorene electric absorption fragment, is high in bond energy between atoms, has good thermal stability, is beneficial to solid accumulation between molecules, is high in electron transition capability, and can be used asan electron transport material to effectively reduce 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. The invention further provides an organic electroluminescent device containing the compound shown in the general formula (I) and a display apparatus.

Description

technical field [0001] The present application relates to the field of organic light-emitting display technology, in particular to an electron transport material and an organic electroluminescent device containing the electron 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, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D251/24C07D239/74C07D405/10C07D401/10C07D401/14C07D409/04C07D241/42C07D235/18H01L51/50H01L51/54
CPCC07D251/24C07D239/74C07D405/10C07D401/10C07D401/14C07D409/04C07D241/42C07D235/18H10K85/615H10K85/622H10K85/654H10K85/6572H10K85/6574H10K85/6576H10K50/16
Inventor 邢其锋丰佩川李玉彬胡灵峰陈跃陈雪波马艳
Owner YANTAI XIANHUA CHEM TECH CO LTD
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