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Quantum confinement effect in ZnO/Mg0.2Zn0.8O multishell nanorod heterostructures -: art. no. 023102
被引:48
作者:
Jang, ES
Bae, JY
Yoo, J
Park, WI
Kim, DW
Yi, GC
Yatsui, T
Ohtsu, M
机构:
[1] Pohang Univ Sci & Technol, Natl CRI Ctr Semicond Nanorods, Pohang 790784, Gyeongbuk, South Korea
[2] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, Gyeongbuk, South Korea
[3] Japan Sci & Technol Agcy, SORST, Machida, Tokyo 1940004, Japan
关键词:
D O I:
10.1063/1.2162695
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
We report on photoluminescence measurements of Mg0.2Zn0.8O/ZnO/Mg0.2Zn0.8O multishell layers on ZnO core nanorods. Dominant excitonic emissions in the photoluminescence spectra show a blueshift depending on the ZnO shell layer thickness attributed to the quantum confinement effect in the nanorod heterostructure radial direction. Furthermore, near-field scanning optical microscopy clearly shows sharp photoluminescence peaks from the individual nanorod quantum structures, corresponding to subband levels.
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页码:1 / 3
页数:3
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