Asymmetric anthracene hosts decorated with naphthobenzofurocarbazole for highly efficient deep-blue organic light-emitting diodes and low-efficiency roll-off

Abstract

OLED devices utilizing naphthobenzofurocarbazole emitters exhibited a maximum external quantum efficiency of 7.0%, a remarkably low-efficiency roll-off of 4.8% was achieved at 1000 cd m −2 , and the HLCT mechanism was identified.