| Surface Light Extraction Mapping from Photonic Quasicrystal on Current Two-Dimensional Array of 12-Fold Injected GaN-Based LEDs |
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| 作者姓名： | 代涛 章蓓 张振生 刘丹 王笑 包魁 康香宁 徐军 俞大鹏 朱星 |
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| 作者单位： | School of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871 |
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| 基金项目： | Supported by the National Basic Research Programme of China under Grant No 2007CB307004, the National Nature Science Foundation of China under Grant Nos 60276034, 60577030 and 60607003, and the National High-Technology Programme of China under Grant No 2006AA03Al13. |
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| 摘 要： | A two-dimensional array of dodecagonal photonic quasicrystal （12PQC） is fabricated on the surface of current injected GaN-based LEDs to out-couple guided modes. The spatially-resolved surface light extraction mapping of 12PQC is observed and compared with that of triangular lattice photonic crystal （3PC） by microscopic electrical luminescence and scanning near-field microscopy. The higher enhancement factor of 12PQC is obtained to be larger than that of 3PC. It is shown that 12PQC is more favourable and efficient for light extraction of guided lights.
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| 关 键 词： | 表面光 反射 光学 数组 |
| 收稿时间： | 2006-10-16 |
| 修稿时间： | 2006-10-16 |
Surface Light Extraction Mapping from Two-Dimensional Array of 12-Fold Photonic Quasicrystal on Current Injected GaN-Based LEDs |
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| DAI Tao,ZHANG Bei,ZHANG Zhen-Sheng,LIU Dan,WANG Xiao,BAO Kui,KANGXiang-Ning,XU Jun,YU Da-Peng,ZHU Xing.Surface Light Extraction Mapping from Photonic Quasicrystal on Current Two-Dimensional Array of 12-Fold Injected GaN-Based LEDs[J].Chinese Physics Letters,2007,24(4):979-982. |
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| Authors: | DAI Tao ZHANG Bei ZHANG Zhen-Sheng LIU Dan WANG Xiao BAO Kui KANGXiang-Ning XU Jun YU Da-Peng ZHU Xing |
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| Institution: | School of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871 |
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| Abstract: | A two-dimensional array of dodecagonal photonic quasicrystal (12PQC) is fabricated on the surface of current injected GaN-based LEDs to out-couple guided modes. The spatially-resolved surface light extraction mapping of 12PQC is observed and compared with that of triangular lattice photonic crystal (3PC) by microscopic electrical luminescence and scanning near-field microscopy. The higher enhancement factor of 12PQC is obtained to be larger than that of 3PC. It is shown that 12PQC is more favourable and efficient for light extraction of guided lights. |
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| Keywords: | 42 70 Qs 07 79 Fc 85 60 Jb |
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