White light-emitting organic electroluminescent devices using the poly( N -vinylcarbazole) emitter layer doped with three fluorescent dyes
1994; American Institute of Physics; Volume: 64; Issue: 7 Linguagem: Inglês
10.1063/1.111023
ISSN1520-8842
AutoresJunji Kido, Kenichi Hongawa, Kikuo Okuyama, Katsuhito Nagai,
Tópico(s)Conducting polymers and applications
ResumoWhite 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.
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