Fabrication of patterned sapphire substrate and effect of light emission pattern on package efficiency

NCU Institutional Repository > 理學院 > 光電科學與工程學系 > 期刊論文 > Item 987654321/103411

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/103411

题名:	Fabrication of patterned sapphire substrate and effect of light emission pattern on package efficiency
作者:	孫慶成;Li, Xu-Fong;Huang, Shih-Wei;Lin, Hong-Yu;Lu, Chun-Yan;Yang, Shang-Fu;Sun, Ching-Cherng;Liu, Cheng-Yi
贡献者:	理學院光電科學與工程學系
关键词:	Chips;Extraction;Gallium nitrides;Light emission;Lithography;Packages;Sapphire;Silicones
日期:	2015-01-01
上传时间:	2026-04-23 11:29:58 (UTC+8)
出版者:	The Optical Society
摘要:	摘要： Pyramidal nature PSS (n-PSS) substrates were produced by a simple wet etching process without standard lithography and dry-etching processes. We found that the output power of the LED on the pyramidal n-PSS substrates is larger than the output power of the LED chip on the flat c-plane sapphire substrate by 46.4% to 51.5%. LED chip on the n-PSS(III) substrate with 73% pattern coverage has the highest output power among LED chips on all n-PSS substrates. The light emission patterns of LED bare chips on different n-PSS and r-PSS substrates were studied. The shape of the light emission pattern was qualitatively defined by the broadness angle, which is the angle at the maximum intensity of the light emission pattern away from the normal direction. The broadness angle is inversely proportional to the facet angle of pyramids created on the n-PSS substrates. In addition, we found that the light extraction efficiency at the GaN/silicone interface has a dependence on the light emission pattern of the bare chips on different n-PSS substrates. The broader light emission pattern (larger broadness angle) would result in higher light extraction efficiency at the GaN/silicone interface. 出版日期： 2015-08-01 出處： Optical materials express, 2015-08, Vol.5 (8), p.1784-1791 資源來源： Optica Publishing Group Journals 識別號： ISSN: 2159-3930 識別號： EISSN: 2159-3930 識別號： DOI: 10.1364/OME.5.001784
显示于类别:	[光電科學與工程學系] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	19	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....