Optical Study of Bandedge Blue-Shift in AlGaN/GaN Double Quantum Wells
YANG Kai, SHEN Bo, ZHANG Rong, ZHOU Yu-gang, CHEN Zhi-zhong, CHEN Peng, ZHENG You-dou, HUANG Zhen-chun1
Department of Physics, Nanjing Universitx Nanjing 210093
1 NASA Goddard Space Flight Center, Code 718, Greenbelt, MD 20771, USA
Optical Study of Bandedge Blue-Shift in AlGaN/GaN Double Quantum Wells
YANG Kai;SHEN Bo;ZHANG Rong;ZHOU Yu-gang;CHEN Zhi-zhong;CHEN Peng;ZHENG You-dou;HUANG Zhen-chun1
Department of Physics, Nanjing Universitx Nanjing 210093
1 NASA Goddard Space Flight Center, Code 718, Greenbelt, MD 20771, USA
关键词 ：
78.66.Fd ,
78.40.Kc
Abstract ： Optical properties of AlGaN/GaN double quantum wells grown by metalorganic chemical vapor deposition are investigated. The wide-angle and small angle x-ray diffraction spectra show high crystalline quality of the sample. Optical transmission and cathodoluminescence spectra exhibit that there is a blue shift of the energy bandedge in the AlGaN/GaN double quantum wells comparing to that of bulk GaN. The experimental data are compared to theoretical calculation based on the finite square well model and a confined particle transitions are identified. The observed energy shift which differs from calculated values of ground state electron to heavy hole transition is attributed to strain in the AlGaN/GaN system.
Key words ：
78.66.Fd
78.40.Kc
出版日期: 1997-09-01
引用本文:
YANG Kai;SHEN Bo;ZHANG Rong;ZHOU Yu-gang;CHEN Zhi-zhong;CHEN Peng;ZHENG You-dou;HUANG Zhen-chun. Optical Study of Bandedge Blue-Shift in AlGaN/GaN Double Quantum Wells[J]. 中国物理快报, 1997, 14(9): 708-711.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1997/V14/I9/708
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