Influece of poly (methylementacrylate) dopant on butadiene derivative electroluminescence

摘要

Organic electrolutinescent (EL) devices with one layer of 1,1-bis (p-diethyl- aminophenyl)-4,4-diphenyl-1,3-(DEAB) doped with different quantities of poly(methyl- methancrylate) (PMMA) (DEAB/PMMA) as the EL-emitting layer, sandwiched be- tween indum/tin-oxide (ITO) and aluminum electrodes, have been fabricated by spin coating onto ITO. We found that there is an optimum doping ratio of DEAB to PMMA in the emitting layer for enhancing the EL intensity and efficiency of DEAB/BMMA devices.