Light extraction analysis of GaN-based light-emitting diodes with surface texture and/or patterned substrate

Tsung Xian Lee, Ko Fon Gao, Wei Ting Chien, Ching Cherng Sun

研究成果: 雜誌貢獻期刊論文同行評審

177 引文 斯高帕斯(Scopus)

摘要

Light extraction analysis of GaN-based light-emitting diodes (LEDs) with Monte Carlo ray tracing is presented. To obtain high light extraction efficiency, periodic structures introduced on the top surface and/or on the substrate of various types of LED are simulated, including wire bonding, flip chip and Thin GaN. Micro pyramid array with an apex angle from 20° to 70° is shown to effectively improve the light extraction efficiency. In addition, for an LED encapsulated within an epoxy lens, the patterned substrate with pyramid array is found to be a more effective way to increase light extraction efficiency than the surface texture.

原文???core.languages.en_GB???
頁(從 - 到)6670-6676
頁數7
期刊Optics Express
15
發行號11
DOIs
出版狀態已出版 - 28 5月 2007

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