Electrical-optical analysis of a GaN/sapphire LED chip by considering the resistivity of the current-spreading layer

NCU Institutional Repository > 工學院 > 機械工程研究所 > 期刊論文 > Item 987654321/26854

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/26854

题名:	Electrical-optical analysis of a GaN/sapphire LED chip by considering the resistivity of the current-spreading layer
作者:	Chen,JC;Sheu,GJ;Hwu,FS;Chen,HI;Sheu,JK;Lee,TX;Sun,CC
贡献者:	機械工程研究所
关键词:	LIGHT-EMITTING-DIODES;EXTRACTION;DESIGN
日期:	2009
上传时间:	2010-06-29 18:01:46 (UTC+8)
出版者:	中央大學
摘要:	The effects of current distribution in LED chips on the electrical potential and optical light extraction efficiency are investigated by a numerical simulation. The results show that when the resistivity of the current-spreading layer is decreased there is current-crowding near the n-contact. On the other hand, when the resistivity in the current-spreading layer increases, there is current-crowding near the p-contact. When the current is crowded near the n-contact due to less resistivity of the current-spreading layer, the input power is lower because of the smaller series resistance in the chip, and the light extraction efficiency is higher since the shadowing effect of the p-contact can be avoided. For L (p) = 50 mu m in this study, the light extraction efficiency at rho (ITO) = 0.1 x 10(-3) Omega center dot cm is 1.4 times better than that when L (p) = 100 mu m, even though the driving voltage is raised 1.02 times.
關聯:	OPTICAL REVIEW
显示于类别:	[機械工程研究所] 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	526	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