Luminescence of an InGaN/GaN multiple quantum well light-emitting diode

被引:31
作者
Sheu, JK
Chi, GC [1 ]
Su, YK
Liu, CC
Chang, CM
Hung, WC
Jou, MJ
机构
[1] Natl Cent Univ, Dept Phys, Ctr Opt Sci, Chungli 32054, Taiwan
[2] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan
[3] Epistar Corp, Hsinchu 300, Taiwan
关键词
D O I
10.1016/S0038-1101(99)00319-6
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
In GaN/GaN multiple quantum wells (MQW) and blue MQW light-emitting diodes (LEDs) were grown by metalorganic vapor phase epitaxy (MOVPE). Band-gap narrowing of the PL spectra for the InGaN/GaN MQW LEDs can be observed at room temperature. In addition, the emission wavelength of EL and PL spectra for the MQW blue LEDs exhibit a blue-shift phenomenon while increasing the injection current and laser power, respectively. This luminescence behavior can tentatively be understood as a competition between a spectral red-shift mechanism of piezoelectricity-induced quantum-confined Stark effect (PQCSE) and a blue-shift mechanism of band-filling and charge screening effects. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1055 / 1058
页数:4
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