期刊
CHEMICAL PHYSICS LETTERS
卷 495, 期 4-6, 页码 161-165出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2010.06.079
关键词
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资金
- Department of Energy - Energy Frontier Research Center at the University of Southern California [DE-SC0001011]
- Universal Display Corp.
Electroluminescence (EL) transient turn-on peaks with more than twice the brightness of the steady-state EL are observed in fluorescent organic light emitting diodes with a doped emission layer. By modeling both the singlet and triplet population dynamics, we identify the EL drop after the peak as due to singlet-triplet (ST) quenching. The peak recovery following a double voltage pulse sequence is explained in terms of triplet population relaxation through triplet-triplet quenching. A mechanism of using phosphors in the emission region is proposed for reducing ST quenching. (C) 2010 Elsevier B.V. All rights reserved.
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