Two-photon excitation of asymmetric GaN/AlGaN quantum discs

被引：0
|
作者：
Lee, Kwan H. [1 ]
Na, Jong H. [1 ]
Birner, Stefan [2 ,3 ]
Yi, Sam N. [1 ]
Taylor, Robert A. [1 ]
Park, Young S. [4 ]
Park, Chang M. [4 ]
Kang, Tae W. [4 ]
机构：
[1] Univ Oxford, Dept Phys, Parks Rd, Oxford OX1 3PU, England
[2] Tech Univ Munich, Walter Schottky Inst, D-85748 Garching, Germany
[3] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
[4] Dongguk Univ, Quantum Funct Semicond Res, Seoul 100715, South Korea
来源：
PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷
关键词：
GaN; two-photon excitation; nanocolumns; quantum discs;
D O I：
暂无
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：
By using two-photon absorption spectroscopy we have performed time-integrated and time-resolved photolurninescence measurements on several coupled asymmetric GaN quantum discs, with embedded AlGaN barriers. We observe free-carrier screening, with an enhancement due to tunneling between the coupled quantum discs.
引用
收藏
页码：981 / +
页数：2
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