標題: | Enhanced Performance of LEDs Using Periodic Tent-Like Post Patterns on A-plane Sapphire Substrates |
作者: | Lin, Bo-Wen Chang, Chung-Cheng Hsieh, Cheng-Yu Wang, Bau-Ming Wu, YewChung Sermon Hsu, Wen-Ching 材料科學與工程學系 Department of Materials Science and Engineering |
關鍵字: | A-plane;light-emitting diode (LED);sapphire |
公開日期: | 1-十二月-2011 |
摘要: | Periodic tent-like post patterns on a-plane sapphire substrates were fabricated using a two-step etching process. They were denoted as a-plane dot pattern sapphire substrate (ADPSS). Compared with the GaN-based light-emitting diode (LED) grown on a-plane sapphire without any pattern (AFlat), the ADPSS-LED has higher output power, light extraction efficiency (LEE), and external quantum efficiency (EQE), and better crystal quality. The output power of ADPSS-LED was 9.6 mW, which was 68.4% larger than the AFlat-LED. In addition, the blue shift of ADPSS-LED was found to be less than that of AFlat-LED. |
URI: | http://dx.doi.org/10.1109/LPT.2011.2167677 http://hdl.handle.net/11536/14627 |
ISSN: | 1041-1135 |
DOI: | 10.1109/LPT.2011.2167677 |
期刊: | IEEE PHOTONICS TECHNOLOGY LETTERS |
Volume: | 23 |
Issue: | 23 |
起始頁: | 1772 |
結束頁: | 1774 |
顯示於類別: | 期刊論文 |