High-Color-Quality White Top-Emitting Organic Electroluminescent Devices Based on Both Exciton and Electroplex Emission
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概要
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A high-color-quality white top-emitting organic electroluminescent device (TOLED) with a simple structure was fabricated using both exciton and electroplex emission. White emission was achieved by combining the exciton emission of 4,4$'$-bis(2,2$'$-diphenylvinyl)-1,1$'$-biphenyl (DPVBi) and the broad band emission of electroplex generated between DPVBi and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP). The white emission spectra showed excellent stability at different bias voltages. By inserting a blend film of DPVBi:BCP and adjusting the ratio of DPVBi to BCP in the blend film, the CIE coordinates of the white emission can be tuned to $(0.30, 0.33)$ and the electroluminescence efficiency can also be enhanced.
- 2011-08-25
著者
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Gong Qihuang
State Key Laboratory For Mesoscopic Physics And Department Of Physics Peking University
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Qu Bo
State Key Laboratory For Mesoscopic Physics And Department Of Physics Peking University
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Xiao Lixin
State Key Laboratory For Mesoscopic Physics And Department Of Physics Peking University
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Zhang Mingxiao
State Key Laboratory For Mesoscopic Physics And Department Of Physics Peking University
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Chen Zhijian
State Key Laboratory For Mesoscopic Physics And Department Of Physics Peking University
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Gong Qihuang
State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China
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Zhang Mingxiao
State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China
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Qu Bo
State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, China
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