Efficient blue electroluminescence from 9,10-diphenylanthracene

초록

We report efficient blue electroluminescence(EL) devices fabricated using 9,10-diphenylanthracene(DPA) as an active emiting material. Although DPA exhibits fluorescence in the blue spectral region with high quantum efficiency, its EL efficiency has been previously reported poor. By doping DPA into a bathocuproine (BCP) layer that acts as hole- and exciton-blocking layer, we can successfully fabricate very efficient blue EL devices with the Commission Internationale de L'Eclairage(CIE)chromaticity coordinates of (0.145,0.195). The devices show a luminous efficiency of 2.9 cd/A at 200 cd/m^2 and macimum luminance of about 10344 cd/m^2 at 16.6V