Growth and optical properties of ZnO/CdS heterostructures

DOI

10.2991/meic-14.2014.293How to use a DOI?

Keywords

ZnO nanorods; Heterostructures; CdS; SEM image; Raman

Abstract

In order to realize the growth of ZnO/CdS nanorod with high quality, ZnO nanorods were firstly fabricated on glass substrates,and then the synthesis of ZnO/ZnS and ZnO/CdS heterostructures were realized by a chemical conversion method.the field-emission scanning electron microscopy (SEM), X-ray diffraction (XRD) pattern and Raman spectra were used to analyze the morphologies and structure properties of the prepared samples. The prepared ZnO nanorods display perfectly hexagonal surface, which suggests that ZnO nanorods grow along (002) direction. SEM image and XRD pattern indicate the ZnO/CdS core shell structure can be prepared by anion-exchange method. Raman spectra further testify the translation process from ZnO nanorod to ZnO/CdS heterostructures. Photoluminescence (PL) spectra shows that the coverage of CdS leads to the decreasing ultraviolet peak intensity due to the lowing free exciton recombination. The present results prove a effective means in the synthesis of ZnO/CdS heterostructures, which can be used as the preparation of photoelectrode in solar cells.

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zihao Guo
AU  - Donghua Fan
AU  - Junzhi Zhang
PY  - 2014/11
DA  - 2014/11
TI  - Growth and optical properties of ZnO/CdS heterostructures
BT  - Proceedings of the 2014 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 1302
EP  - 1305
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-14.2014.293
DO  - 10.2991/meic-14.2014.293
ID  - Guo2014/11
ER  -