| An Electroluminescence Delay Time Model of Bilayer Organic Light-Emitting Diodes |
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| 作者姓名： | 李宏建 朱儒晖 李雪勇 杨兵初 |
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| 作者单位： | College of Physics Science and Technology, Central South University, Changsha 410083 |
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| 基金项目： | Supported by the Distinguished Youth Foundation of Hunan Province under Grant No 0333Y1008, the Science Foundation for Post doctorate of China under Grant No 2004035083, the Natural Science Foundation of Hunan Province under Grant No 063320034, and the Science Foundation of Central South University under Grant No 0601059. |
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| 摘 要： | Based on the mechanism of injection, transport and recombination of the charge carriers, we develop a model to calculate the delay time of electroluminescence （EL） from bilayer organic light emitting diodes. The effect of injection, transport and recombination processes on the EL delay time is discussed, and the relationship between the internal interface barrier and the recombination time is revealed. ＂]~he results show that the EL delay time is dominated by the recombination process at lower applied voltage and by the transport process at higher applied voltage. When the internal interface barrier varies from 0.15 eV to 0.3 eV, the recombination delay time increases rapidly~ while the internal interface barrier exceeds about 0.3eV~ the dependence of the recombination delay time on applied voltage is almost undiversified, which may serve as a guideline for designing of a high-speed EL response device.
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| 关 键 词： | 电致发光 时间模式 双分子层 光学 |
| 收稿时间： | 2006-12-1 |
| 修稿时间： | 2006-12-01 |
An Electroluminescence Delay Time Model of Bilayer Organic Light-Emitting Diodes |
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| LI Hong-Jian,ZHU Ru-Hui,LI Xue-Yong,YANG Bing-Chu.An Electroluminescence Delay Time Model of Bilayer Organic Light-Emitting Diodes[J].Chinese Physics Letters,2007,24(8):2394-2397. |
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| Authors: | LI Hong-Jian ZHU Ru-Hui LI Xue-Yong YANG Bing-Chu |
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| Affiliation: | College of Physics Science and Technology, Central South University, Changsha 410083 |
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| Abstract: | Based on the mechanism of injection, transport and recombination of the charge carriers, we develop a model to calculate the delay time of electroluminescence (EL) from bilayer organic light emitting diodes. The effect of injection, transport and recombination processes on the EL delay time is discussed, and the relationship between the internal interface barrier and the recombination time is revealed. The results show that the EL delay time is dominated by the recombination process at lower applied voltage and by the transport process at higher applied voltage. When the internal interface barrier varies from 0.15eV to 0.3eV, the recombination delay time increases rapidly, while the internal interface barrier exceeds about 0.3eV, the dependence of the recombination delay time on applied voltage is almostundiversified, which may serve as a guideline for designing of a high-speed EL response device. |
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| Keywords: | 78 60 Fi |
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