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Formation and photoluminescent properties of embedded ZnO quantum dots in ZnO/ZnMgO multiple-quantum-well-structured nanorods

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4 Author(s)
Kim, Chinkyo ; Department of Physics, Kyunghee University, 1 Hoegi-dong Dongdaemoon-gu, Seoul 130-701, Korea and Research Institute of Basic Sciences, Kyunghee University, 1 Hoegi-dong Dongdaemoon-gu, Seoul 130-701, Korea ; Park, Won Il ; Gyu-Chul Yi ; Kim, Miyoung

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ZnO/Zn0.8Mg0.2O multiple-quantum-well (MQW) nanorods with a different number of periods and well widths were grown by catalyst-free metal-organic vapor phase epitaxy. Their optical and structural characteristics were investigated using photoluminescence, transmission electron microscopy, and field emission scanning electron microscopy. Unlike ZnO/ZnMgO MQW thin films, it was observed that embedded quantum dots played a more important role in the optical characteristics of ZnO/ZnMgO MQW nanorods than quantum confined Stark effect due to polarization field.

Published in:
Applied Physics Letters  (Volume:89 ,  Issue: 11 )

Date of Publication: Sep 2006

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