| 新型低压高效叠层有机白光器件 |
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| 引用本文： | 委福祥,方亮,蒋雪茵,张志林.新型低压高效叠层有机白光器件[J].半导体学报,2008,29(12):2417-2420. |
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| 作者姓名： | 委福祥 方亮 蒋雪茵 张志林 |
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| 作者单位： | 中国矿业大学材料科学与工程学院,徐州,221008;上海大学新型显示技术与应用集成教育部重点实验室,上海,201800 |
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| 摘 要： | 以Bphen:Li/WO3作为电荷产生层制备了低压、高效有机叠层白光器件. 实验中，首先在器件中引入高导电性的载流子注入和传输层，有效降低了器件的驱动电压，然后通过电荷产生层垂直堆叠两个低压白光器件，获得了低压、高效有机叠层白光器件. 叠层器件性能与单发光单元的器件相比较，其亮度及效率均有大幅提高，叠层器件的最大电流效率达到了17cd/A，在相同的电流密度下，叠层器件的效率约为传统器件的2.3倍，同时由于在叠层结构中引入了高导电性的载流子传输层，有效降低了器件的驱动电压，显著改善了白光器件的流明效率.叠层器件的流明效率相对于单发光单元器件提高了53%.
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| 关 键 词： | 有机电致发光 低压 叠层 白光EL器件 |
| 收稿时间： | 3/17/2008 6:43:05 PM |
| 修稿时间： | 8/12/2008 9:53:30 AM |
Low-Voltage and High Efficiency Tandem White Organic Light Emitting Diodes |
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| Wei Fuxiang,Fang Liang,Jiang Xueyin and Zhang Zhilin.Low-Voltage and High Efficiency Tandem White Organic Light Emitting Diodes[J].Chinese Journal of Semiconductors,2008,29(12):2417-2420. |
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| Authors: | Wei Fuxiang Fang Liang Jiang Xueyin and Zhang Zhilin |
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| Institution: | School of Materials Science & Engineering,China University of Mining and Technology,Xuzhou 221008,China;School of Materials Science & Engineering,China University of Mining and Technology,Xuzhou 221008,China;Key Laboratory of Advanced Display and System Application of the Ministry of Education,Shanghai University,Shanghai 201800,China;Key Laboratory of Advanced Display and System Application of the Ministry of Education,Shanghai University,Shanghai 201800,China |
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| Abstract: | We report a white tandem organic light-emitting device (TOLED) with high efficiency and low drive voltage using Bphen:Li/WO3 as the interconnecting layer.The TOLED have been fabricated by connecting two low-voltage driving white units with conductive transport layers.The tandem two-unit device produces two higher luminance efficiency than that expected of a single-unit device.A maximum efficiency of 17cd/A is achieved by the tandem device comprised of two white-fluorescent OLEDs.The power efficiency of tandem white organic light-emitting device is enhanced by 53% as compared to the control device. |
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| Keywords: | organic emitting diode low voltage tandem white EL devices |
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