DC current-induced rollover of illumination efficiency of GaN-Based power LEDs

被引：7
作者：
Liao, Michael P. [1 ]
机构：
[1] DaYeh Univ, Dept Elect Engn, Changhua 515, Taiwan
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 21-24期
关键词：
current injection; illumination efficiency; junction temperature; light-emitting diode (LED);
D O I：
10.1109/LPT.2007.908353
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Pulse drive currents were utilized to investigate dc current-induced rollover of illumination efficiency of GaN-based power light-emitting diodes (LEDs). By using the pulse drive currents, we can separate the effects that junction temperature and current injection have on dc current-induced rollover of illumination efficiency of GaN-based power LEDs. Comparing the measurement results obtained from pulse and dc drive currents, we verified that junction temperature and current injection were the major causes of dc current-induced rollover of illumination efficiency of power LEDs.
引用
收藏
页码：2000 / 2002
页数：3
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