Browsing by Author "Chu, JI"

Now showing 1 - 1 of 1

Improvement of InGaN-GaN light-emitting diode performance with a nano-roughened p-GaN surface
(2005-05-01)
Huang, HW
;
Kao, CC
;
Chu, JI
;
Kuo, HC
;
Wang, SC
This investigation describes the development of InGaN-GaN light-emitting diode (LED) with a nano-roughened top p-GaN surface which uses Ni nano-mask and wet etching. The light output of the InGaN-GaN LED with a nano-roughened top p-GaN surface is 1.4 times that of a conventional LED, and wall-plug efficiency is 45% higher. The operating voltage of InGaN-GaN LED was reduced from 3.65 to 3.5 V at 20 mA and the series resistance was reduced by 20%. The light output is increased by the nano-roughening of the top p-GaN surface. The reduction in the series resistance can be attributed to the increase in the contact area of nano-roughened surface.