Improvement in the extraction efficiency of AlGaInP and GaN thin film LEDs via surface roughening

Y. J. Lee*, H. C. Kuo, T. C. Lu, H. W. Huang, S. C. Wang, C. F. Lin

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

摘要

In the first part of this paper, we present a LED structure adopting double diffused-surfaces on-top transmitted diffuse surface and another diffuse omnidirectional reflector surface on the bottom of LED chip. According to this design, guided light scattered by bottom diffuse omnidirectional reflectors can be again scattered toward to angles inside the escape cone by top diffuse transmittance surfaces. High light external efficiency (∼ 40%) was achieved on this novel structure. This high efficiency could be attributed to the strong scattering efficiency of using double diffuse surfaces, further reducing trapping of light within LED chips. In the second part, we present n-side-up AlGaInP-based LEDs with a triangle-like surface morphology using the adhesive layer bonding technique, followed by wet etching to roughen the surface. The novel AlGaInP LED design could not only reduce internal reflection between rear mirror systems and the semiconductor/air interface, but also to effectively scatter light outside LED devices. copyright The Electrochemical Society.

原文英語
主出版物標題State-of-the-Art Program on Compound Semiconductors 45 (SOTAPOCS 45) -and- Wide Bandgap Semiconductor Materials and Devices 7
發行者Electrochemical Society Inc.
頁面199-211
頁數13
版本5
ISBN(電子)1566775051
DOIs
出版狀態已發佈 - 2006
對外發佈
事件State-of-the-Art Program on Compound Semiconductors 45 (SOTAPOCS 45) -and- Wide Bandgap Semiconductor Materials and Devices 7 - 210th Electrochemical Society Meeting - Cancun, 墨西哥
持續時間: 2006 10月 292006 11月 3

出版系列

名字ECS Transactions
號碼5
3
ISSN(列印)1938-5862
ISSN(電子)1938-6737

會議

會議State-of-the-Art Program on Compound Semiconductors 45 (SOTAPOCS 45) -and- Wide Bandgap Semiconductor Materials and Devices 7 - 210th Electrochemical Society Meeting
國家/地區墨西哥
城市Cancun
期間2006/10/292006/11/03

ASJC Scopus subject areas

  • 工程 (全部)

指紋

深入研究「Improvement in the extraction efficiency of AlGaInP and GaN thin film LEDs via surface roughening」主題。共同形成了獨特的指紋。

引用此