中国物理B ›› 2014, Vol. 23 ›› Issue (7): 77802-077802.doi: 10.1088/1674-1056/23/7/077802
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
魏娜a b, 郭坤平a b, 周朋超a b, 于建宁b, 魏斌b, 张建华b
Wei Na (魏娜)a b, Guo Kun-Ping (郭坤平)a b, Zhou Peng-Chao (周朋超)a b, Yu Jian-Ning (于建宁)b, Wei Bin (魏斌)b, Zhang Jian-Hua (张建华)b
摘要: We characterized the 6,12-bis{[N-(3,4-dimethylphenyl)-N-(2,4,5-trimethylphenyl)]}amino chrysene (BmPAC), which has been proven to be a blue fluorescent emission with high EL efficiency. The blue fluorescent device exhibits good performance with an external quantum efficiency of 5.8% and current efficiency of 8.9 cd/A, respectively. Using BmPAC, we also demonstrate a hybrid phosphorescence/fluorescence white organic light-emitting device (WOLED) with high efficiency of 36.3 cd/A. In order to improve the relative intensity of blue light, we plus a blue light-emitting layer (BEML) in front of the orange light emitting layer (YEML) to take advantage of the excess singlet excitons. With the new emitting layer of BEML/YEML/BEML, we demonstrate the fluorescence/phosphorescence/fluorescence WOLED exhibits good performance with a current efficiency of 47 cd/A and an enhanced relative intensity of blue light.
中图分类号: (Electroluminescence)