White light-emitting organic electroluminescent devices using the poly(N-vinylcarbazole) emitter layer doped with three fluorescent dyes

✍ Scribed by J. Kido; K. Hongawa; K. Okuyama; K. Nagai

• Book ID: 126043291
• Publisher: American Institute of Physics
• Year: 1994
• Tongue: English
• Weight: 494 KB
• Volume: 64
• Category: Article
• ISSN: 0003-6951
• DOI: 10.1063/1.111023

✦ Synopsis

White light-emitting electroluminescent devices were fabricated using poly(N-vinylcarbazole) (PVK) as a hole-transporting emitter layer and a double layer of 1,2,4-triazole derivative (TAZ) and tris(8-quinolinolato)aluminum(III) complex (Alq) as an electron transport layer. The PVK layer was doped with fluorescent dyes such as blue-emitting 1,1,4,4-tetraphenyl-1,3-butadiene, green-emitting coumarin 6, and orange-emitting DCM 1. A cell structure of glass substrate/indium-tin-oxide/doped PVK/TAZ/Alq/Mg:Ag was employed. White emission covering a wide range of the visible region and a high luminance of 3400 cd/m2 were obtained at a drive voltage of 14 V.