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High efficient white organic light-emitting diodes based on triplet multiple quantum well structure
Zhao B.; Su Z. S.; Li W. L.; Chu B.; Jin F. M.; Yan X. W.; Zhang F.; Fan D.; Zhang T. Y.; Gao Y.; Wang J. B.
2012
发表期刊Applied Physics Letters
ISSN0003-6951
卷号101期号:5
摘要We demonstrate the high efficient triplet multiple quantum well (MQW) structure white organic light-emitting diodes (WOLEDs) (MQW-WOLEDs) by introducing phosphorescent Ir-complex material. In the triplet MQW-WOLEDs, 1,3,5-tris(N-phenyl-benzimidazol-2-yl)benzene functions as the potential barrier layer; fluorescent dopant layer and Ir-complex phosphorescent dopant layer act as the blue-emitting and orange-emitting potential well layer, respectively. The maximum luminance, current efficiency, and power efficiency are 19 000 cd/m(2), 14.5 cd/A, and 5.41m/W, respectively; and the efficiency roll-off is especially improved by similar to 15% over reference device. The emission spectra almost do not change with the changing drive voltage; that is, Commission Internationale de I'Eclairage coordinates x and y vary only +/- 0.002 and +/- 0.008 from 8 to 14 V. The improvement of electroluminescence performances is attributed to the balanced electron-hole injection and transport, confinement of carriers and excitions within potential well; as well more detail of improvement mechanism is discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4742739]
收录类别SCI ; EI
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/34515
专题中科院长春光机所知识产出
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Zhao B.,Su Z. S.,Li W. L.,et al. High efficient white organic light-emitting diodes based on triplet multiple quantum well structure[J]. Applied Physics Letters,2012,101(5).
APA Zhao B..,Su Z. S..,Li W. L..,Chu B..,Jin F. M..,...&Wang J. B..(2012).High efficient white organic light-emitting diodes based on triplet multiple quantum well structure.Applied Physics Letters,101(5).
MLA Zhao B.,et al."High efficient white organic light-emitting diodes based on triplet multiple quantum well structure".Applied Physics Letters 101.5(2012).
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