| 提高发光二极管出光效率的新方法 |
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| 引用本文： | 邓琛,徐晨,徐丽华,邹德恕,蒋文静,戴天明,李晓波,沈光地.提高发光二极管出光效率的新方法[J].光电子．激光,2009,20(5). |
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| 作者姓名： | 邓琛 徐晨 徐丽华 邹德恕 蒋文静 戴天明 李晓波 沈光地 |
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| 作者单位： | 北京工业大学北京市光电子技术实验室,北京,100124
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| 基金项目： | 国家高技术研究发展计划(863计划)，北京市人才强教计划 |
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| 摘 要： | 利用高分子共混物的微相分离和自组装原理,制备出具有纳米微孔的PMMA薄膜,以此为掩膜对发光二极管(LED)表面进行湿法腐蚀,得到表面微结构,并研究了腐蚀时间对表面形貌的影响.测试结果表明,当微孔直径在500 nm左右、腐蚀深度约140 nm时,所得到的表面微结构能使LED在20 mA的注入电流下光功率平均提高18%.
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| 关 键 词： | 表面微结构 自组装 发光二极管(LED) 出光效率 |
A new approach to enhance the extraction efficiency of LED |
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| DENG Chen,XU Chen,XU Li-hu,ZOU De-shu,JIANG Wen-jing,DAI Tian-ming,LI Xiao-bo,SHEN Guang-di.A new approach to enhance the extraction efficiency of LED[J].Journal of Optoelectronics·laser,2009,20(5). |
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| Authors: | DENG Chen XU Chen XU Li-hu ZOU De-shu JIANG Wen-jing DAI Tian-ming LI Xiao-bo SHEN Guang-di |
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| Affiliation: | Beijing University of Technology;Beijing Optoelectronic Technology Laboratory;Beijing 100124;China |
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| Abstract: | Based on the micro-phase separation and self-assembly of polymer blends,a mask,in which many nano-holes distribute regularly,is developed from PS/PMMA blend film to fabricate microstructure on GaP surface by wet etching.By employing this method on LED surface,when the diameter of the nano-holes in mask is around 500nm and the etch depth is 140nm,the LED output power increases by 18% in average. |
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| Keywords: | microstructure self-assembly light emitting diode(LED) extraction efficiency |
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