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Synthesis and photoluminescence properties of CdSe-Ag2Se and CdSe-Ag coaxial hetero-nanotube arrays

Published online by Cambridge University Press:  29 March 2012

J.-B. Li ,
Z.-K. Zhou ,
L. Zhou  and
Z.-H. Hao
J.-B. Li
Affiliation:
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P.R. China
Z.-K. Zhou
Affiliation:
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P.R. China
L. Zhou
Affiliation:
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P.R. China
Z.-H. Hao*
Affiliation:
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, P.R. China
*
ae-mail: zhhao@whu.edu.cn
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Abstract

We presented an easy-to-control non-galvanic method for synthesizing CdSe-Ag2Seand CdSe-Ag coaxial hetero-nanotube arrays in anodic aluminum oxide (AAO) template, and investigated their optical properties. Cation exchange method was used to convert the CdSe nanotube arrays into the CdSe-Ag2Se nanotube arrays. Compared with the CdSe nanotubes, the photoluminescence (PL) intensity of CdSe-Ag2Se decreased and the PL lifetime prolonged, which was attributed to the redistribution of the exciton relaxation and recombination processes. In contrast, the CdSe-Ag hetero-nanotube arrays displayed a short PL lifetime, which was mainly due to the interaction and energy transfer between the CdSe and Ag. Our findings may have potential applications in design of the optoelectronic devices.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 58 , Issue 1 , April 2012 , 10403
Copyright
© EDP Sciences, 2012

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