Kinetic model for degradation of light-emitting diodes

被引:99
作者
Chuang, SL [1 ]
Ishibashi, A [1 ]
Kijima, S [1 ]
Nakayama, N [1 ]
Ukita, M [1 ]
Taniguchi, S [1 ]
机构
[1] SONY CORP,RES CTR,HODOGAYA KU,YOKOHAMA,KANAGAWA 240,JAPAN
关键词
light-emitting diodes; quantum-well devices; semiconductor lasers;
D O I
10.1109/3.585485
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
We present a kinetic model for the optical output degradation of light-emitting diodes based on the carrier-recombination enhanced defect motion. Our model leads to analytical solutions and universal curves for the optical output power and the defect density as a function of the normalized aging time with the initial quantum efficiency as the determining parameter. The theoretical results explain very well the time dependence of the II-VI light-emitting diodes under constant current aging condition. The faster aging rate with increasing bias current or temperature is also investigated both experimentally and theoretically, resulting in a very good agreement. Our model provides a quantitative description of the light-emitting diode aging characteristics for compound semiconductors in the presence of electron-hole recombination-enhanced defect generation.
引用
收藏
页码:970 / 979
页数:10
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