Electroluminescence Spikes of Pulsed Organic Light-Emitting Diodes at Switch-Off Using 1,4-Bis[2-[4-[N,N-di($ p$-tolyl)amino]phenyl]vinyl]benzene as a Light-Emitting Layer
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概要
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The electroluminescence (EL) spikes from low-molecular organic light-emitting diodes (OLEDs) at the switch-off of applied pulse voltage using 1,4-bis[2-[4-[N,N-di($ p$-tolyl)amino]phenyl]vinyl]benzene (DSB) as an emission layer were observed. The characteristics of EL spikes, such as their duration and magnitude, were studied by changing the device structure of the OLEDs and the conditions of the applied voltage. The duration of the EL spikes was found to depend on the species of electron transport layer but to be independent of the amplitude of the applied voltage. The magnitude of the EL spikes increased with the applied time up to a saturated state, which was significantly determined by the thickness of the emitting layer. The trapezoid pulse voltage was found to be an effective tool for predicting the charge accumulation in the interfacial layer.
- 2005-06-15
著者
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Ichikawa Musubu
Department Of Functional Polymer Science Faculty Of Textile Science And Technology Shinshu Universit
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Wei Bin
Department Of Functional Polymer Science Faculty Of Textile Science And Technology Shinshu Universit
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Taniguchi Yoshio
Department Of Functional Polymer Science Faculty Of Textile Science And Technology Shinshu Universit
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HORIBA Yashuhiro
Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu Univers
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Koyama Toshiki
Department Of Functional Polymer Science Faculty Of Textile Science And Technology Shinshu Universit
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Furukawa Kenji
Department Of Applied Life Science Faculty Of Engineering Sojo University
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Horiba Yashuhiro
Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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Taniguchi Yoshio
Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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Furukawa Kenji
Department of Functional Polymer Science, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
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