標題: Characteristics of Polarized Light Emission in a-Plane GaN-Based Multiple Quantum Wells
作者: Chang, Chiao-Yun
Huang, Huei-Min
Lai, Chih Ming
Lu, Tien-Chang
光電工程學系
Department of Photonics
關鍵字: a-Plane;GaN;GaN/AlGaN multiple quantum wells;nonpolar;polarization
公開日期: 1-七月-2012
摘要: In this paper, we investigated polarized light emission properties on a series of a-plane GaN/AlGaN multiple quantum wells grown on r-plane sapphire substrates with various well widths by using the polarization-dependent photoluminescence measurement. To clarify reasons of polarization properties in light emission, we applied the 6 x 6 k.p model to simulate the E-K dispersion relationship and wave functions to obtain optical transitions of different polarized emissions. According to our results, the sub-bands of vertical bar Y>-like states are raised toward the top of the valence sub-band level with increasing the well width. And the optical matrix element of y-polarized light emission will dominate the optical transition, leading to the increase of degree of polarization in the thicker well.
URI: http://hdl.handle.net/11536/16260
ISSN: 0018-9197
期刊: IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume: 48
Issue: 7
結束頁: 867
顯示於類別:期刊論文


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  1. 000304093200005.pdf