Organic compound and organic electroluminescent device comprising the organic compound

Abstract

The invention provides an organic compound and an organic electroluminescent device comprising the organic compound. The chemical formula of the organic compound is shown in abstract appended drawings, wherein R <1>, R <2>, R <3>, R <4>, R <5>, R <6> and R <7> represent respectively same or different substituent groups such as hydrogen, C1-8 alkyl group, C1-8 alkoxy group, C1-8 alkylhalide group,aromatic group, heteroaryl group, cycloalkyl group, heterocyclic group and cycloaliphatic group, and Z independently represents one of groups shown in drawings of the description, wherein R <8> and R<9> represent respectively same or different substituent groups such as aromatic group, heteroaryl group, cycloalkyl group, heterocyclic group and cycloaliphatic group.

Description

Organic compound and organic electroluminescent device comprising same 【Technical field】 The present invention relates to an organic compound and an organic electroluminescent device comprising it, in particular to an organic compound as a host material and a phosphorescent organic electroluminescent device comprising it. 【Background technique】 An organic electroluminescent device, also known as an organic light-emitting diode (OLED), is a light-emitting diode (LED) that uses an organic layer as an active layer. Due to the advantages of low-voltage operation, high brightness, light weight, wide viewing angle, and high contrast value, organic electroluminescent devices have been gradually used in flat panel displays in recent years. Different from liquid crystal displays, organic light-emitting diode pixel arrays included in organic electroluminescent displays have the characteristic of self-illumination, so no external backlight is needed. Generally, an OLED device inclu...

AI Technical Summary

Problems solved by technology

However, these known materials have problems such as poor thermal stability or low current density when used in components

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