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Advances in Condensed Matter Physics
Volume 2014 (2014), Article ID 758572, 6 pages
http://dx.doi.org/10.1155/2014/758572
Research Article

Synthesis and Characterization of One-Dimensional Porous (Zn,Cd)S/SiO2 Composite Nanostructural Materials

1School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China
2School of Engineering and Technology, China University of Geosciences, Beijing 100083, China

Received 6 October 2013; Accepted 24 November 2013; Published 29 January 2014

Academic Editor: Jianye Li

Copyright © 2014 Xiuli Fu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

One-dimensional (1D) porous (Zn,Cd)S/SiO2 composite nanostructural materials were synthesized by thermal evaporation of ZnS and CdS mixture powder at 950°C. The nanomaterials were collected from silicon wafers which were coated with 10 nm thick gold and were set apart from the source about 10 cm away. The diameter of the as-prepared 1D porous composite nanostructures is in the range of 1–1.5  m and their lengths are up to tens to hundreds of micrometers. The photoluminescence spectra measured at different temperatures of the prepared nanostructures display a similar broadband signature, which can be fitted by Gaussian function into three emission peaks centered at 477, 536, and 588 nm and attributed to band edge emission, neutral oxygen vacancies, and antisymmetric stretching of Si–O–Si and nonstoichiometric SiOx ( ), respectively.