| 基于载流子平衡的效率及亮度提高的有机蓝光器件 |
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| 引用本文： | 穆晓龄,曲加伟,郭永林,梁续旭,赵毅.基于载流子平衡的效率及亮度提高的有机蓝光器件[J].发光学报,2015,36(8):917-922. |
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| 作者姓名： | 穆晓龄 曲加伟 郭永林 梁续旭 赵毅 |
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| 作者单位： | 吉林大学电子科学与工程学院 集成光电子学国家重点联合实验室, 吉林 长春 130012 |
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| 摘 要： | 研究了在两空穴传输层之间插入Bphen中间层对有机蓝光器件(BOLEDs)效率的影响。结果表明,其对空穴的阻挡作用使得电子与空穴在发光区内达到相对平衡,减少了激子-极化子猝灭几率,从而提高了有机蓝光器件的效率和亮度。器件的最大电流效率从16.12 cd/A增加到20.52 cd/A,相对提高了27.30%;最大功率效率从14.23 lm/W增加到17.64 lm/W,相对提高了23.96%。文中对提高效率的物理机制进行了详细的阐述。
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| 关 键 词： | BOLEDs Bphen中间层 激子-极化子猝灭 载流子平衡 |
| 收稿时间： | 2015-04-25 |
Blue Organic Light-emitting Device with Improved Efficiency and Luminance Based on Carriers Balance |
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| MU Xiao-ling,QU Jia-wei,GUO Yong-lin,LIANG Xu-xu,ZHAO Yi.Blue Organic Light-emitting Device with Improved Efficiency and Luminance Based on Carriers Balance[J].Chinese Journal of Luminescence,2015,36(8):917-922. |
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| Authors: | MU Xiao-ling QU Jia-wei GUO Yong-lin LIANG Xu-xu ZHAO Yi |
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| Institution: | State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China |
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| Abstract: | Blue organic light-emitting device (BOLED) with a Bphen interlayer inserted between two hole transport layers was demonstrated. It utilized the hole blocking effect of Bphen interlayer to obtain more balance for electrons and holes in the recombination zone. It reduced the probability of exciton-polaron quenching, thereby improved efficiency and luminance of blue organic light-emitting device. The current efficiency improved about 27.30%, from 16.12 cd/A to 20.52 cd/A, and the power efficiency improved about 23.96% from 14.23 lm/W to 17.64 lm/W. The physical mechanisms on the improvement of efficiency were discussed in detail. |
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| Keywords: | BOLEDs Bphen interlayer exciton-polaron quenching carriers balance |
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