Author/Authors :
Liang Wen، نويسنده , , Fushan Li، نويسنده , , Jiangxing Xie، نويسنده , , Chaoxing Wu، نويسنده , , Yong Zheng، نويسنده , , Dongling Chen، نويسنده , , Sheng Xu، نويسنده , , Tailiang Guo، نويسنده , , Bo Qu، نويسنده , , Zhijian Chen and Andrzej Przekwas ، نويسنده , , Qihuang Gong، نويسنده ,
Abstract :
White organic light-emitting diode (WOLED) with a structure of ITO/poly(N-vinylcarbazole) (PVK)/4,7-diphenyl-1, 10-phenanthroline (Bphen)/tris(8-hydroxyquinoline)aluminum (Alq3)/LiF/Al has been fabricated via the thermal evaporation technique. The electroluminescence (EL) spectrum of the as-fabricated WOLED covers from 380 to 700 nm of the visible light region with a wide blue emission from PVK and an interesting new red emission. The red emission at 613 nm in EL spectra of the WOLED was attributed to electroplex emission at PVK/Bphen interface since it was not observed in photoluminescence spectra. The WOLED showed a Commission International De lʹEclairage coordinate of (0.31, 0.32), which is very close to the standard white coordinate (0.33, 0.33).
Keywords :
EL spectra , WOLED , Electroplex emission , CIE coordinate
