Boron-nitrogen compound with multi-membered fused ring, organic electroluminescent device, composition and preparation containing same, and display apparatus

Abstract

A boron-nitrogen compound with a multi-membered fused ring, and an OLED containing the same, and an organic light-emitting apparatus are provided. By the cooperation of a fused heterocyclic structure with limiting groups such as a tert-butyl group and a cycloalkyl group, the boron-nitrogen compound may improve the thermal stability of the compound and have excellent light-emitting characteristics. By using the boron-nitrogen compound as a light-emitting layer material, it may be possible to effectively enable an organic light-emitting device to have a low driving voltage, maintain the voltage stability and have an improved light-emitting efficiency.

Dependencies are inferred from the claim text.