期刊
APPLIED PHYSICS LETTERS
卷 94, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3097028
关键词
dyes; organic light emitting diodes; phosphorescence
资金
- Hundreds Talents program of Chinese Academy of Sciences
- National Science Fund for Distinguished Young Scholars of China [50325312]
- Foundation of Jilin Research Council [20050517, 20080337]
- Foundation of Changchun Research Council [2007GH06]
- NSFC [50633040, 20621401]
- Ministry of Science and Technology of China [2006AA03A161, 2009CB930603, 2009CB623604]
By codoping blue and orange phosphorescent dyes into a single host material, a highly efficient white organic light-emitting diode (WOLED) with Commission Internationale de L'Eclairage coordinates of (0.38, 0.43) at 12 V is demonstrated. Remarkably, this WOLED achieves reduced current efficiency roll-off, which slightly decreases from its maximum value of 37.3-31.0 cd/A at 1000 cd/m(2). The device operational mechanism is subsequently investigated in order to unveil the origin of the high performance.
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