Luminescent properties of organic thin film electroluminescent devices

Abstract

Organic thin film EL devices have been extensively investigated in recent year. We synthesized N, N'-diphenyl-N, N'-(3-methyl phenyl)1,1'biphenyl-4,4'-diamine (TPD) and two diamine derivatives synthesized in the same way, and exmined them thermal stabilities by measuring these glass transition temperature(Tg). We fabricated thin film double-layer structure utilizing these diamine derivatives as a hole transport layer and measured luminescent properteis and deterioration characteristics of these devices.