DocumentCode :
1195002
Title :
Enhancement of Light Extraction Efficiency Using Lozenge-Shaped GaN-Based Light-Emitting Diodes
Author :
Jang, Dong-Hyun ; Shim, Jong-In ; Shin, Dong-Soo
Author_Institution :
Dept. of Electr. & Comput. Sci. Eng., Hanyang Univ., Ansan
Volume :
21
Issue :
12
fYear :
2009
fDate :
6/15/2009 12:00:00 AM
Firstpage :
760
Lastpage :
762
Abstract :
We have demonstrated both theoretically and experimentally that a lozenge-shaped light-emitting diode (LED) enhances light extraction efficiency compared with a conventional rectangular LED. The total light output power of the lozenge-shaped LED on a transmitter optical can (TO-can)-type package shows an increase of 12% at an injection current of 20 mA when compared with that of a rectangular LED. Moreover, the series resistance and the forward voltage of the lozenge-shaped LED slightly decrease compared with those of the rectangular LED. The far-field emission pattern shows that the light escaping from the lozenge-shaped LED along the horizontal direction is larger than that from the rectangular LED.
Keywords :
II-VI semiconductors; gallium compounds; light emitting diodes; wide band gap semiconductors; GaN; current 20 mA; far-field emission pattern; injection current; light extraction efficiency; light-emitting diodes; series resistance; transmitter optical can-type package; Extraction efficiency; GaN; light-emitting diodes (LEDs); lozenge; shaping;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2009.2017504
Filename :
4801722
Link To Document :
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