Fluoranthene derivative-containing amine compound and organic electroluminescent device comprising same

Abstract

The invention discloses a fluoranthene derivative-containing amine compound and an organic electroluminescent device comprising the same. The chemical structure of the compound is shown in the specification, wherein Ar1 is substituted or unsubstituted aryl or heteroaryl with the carbon atom number of 6-30, alkylaryl substituted or unsubstituted amido with the carbon atom number of 6-30, or substituted or unsubstituted heterocyclic radical with the carbon atom number of 1-30, L1 and L2 are respectively and independently selected from a direct bond, substituted or unsubstituted arylene or heteroarylene, and R1-R14 are respectively and independently selected from hydrogen, deuterium, substituted or unsubstituted alkyl or alkoxy with the carbon atom number of 1-20, substituted or unsubstituted aryl or heteroaryl with the ring forming carbon atom number of 5-60, or substituted or unsubstituted rings formed by combining with adjacent groups. The fluoranthene derivative-containing amine compound provided by the invention has high refractive index and excellent crystallization resistance, and can improve the luminous efficiency and stability of an OLED as a covering layer material.

Description

technical field [0001] The invention belongs to the field of organic electroluminescent materials, in particular to amine compounds containing fluoranthene derivatives and organic electroluminescent devices containing the same. Background technique [0002] At present, organic electroluminescent devices (OLEDs) emit light from the TFT side (referred to as bottom emission) with low aperture ratio and low pixel density. In high-density OLED devices, light emission from the electrode opposite to the TFT (referred to as top emission) is often used. The top emission has small shielding and large aperture ratio, and is widely used in occasions requiring high pixel density. Generally, the electrode on the light-emitting side of the top-emitting device is made of translucent metal or metal compound. In order to reduce the total reflection of light at the metal interface and improve the luminous efficiency, a covering layer is often added on the electrode side away from the TFT. Howe...

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Problems solved by technology

Generally, the electrode on the light-emitting side of the top-emitting device is made of translucent metal or metal compound. In order to reduce the total reflection of light at the metal interface and improve the luminous efficiency, a covering layer is often added on the electrode side away from the TFT. However, traditional covering layers such as The refractive index of ALQ3, benzidine, etc. at 460nm is 1.8-1.9, and the effect is not ideal. Based on this, the present invention proposes an amine compound containing fluoranthene derivatives, specifically as follows

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