Table of Contents
ISRN Condensed Matter Physics
Volume 2013 (2013), Article ID 145205, 5 pages
http://dx.doi.org/10.1155/2013/145205
Research Article

Effect of pH on the Characteristics of Cu2ZnSnS4 Nanoparticles

Department of Physics, Sri Venkateswara University, Tirupati 517502, India

Received 17 April 2013; Accepted 14 May 2013

Academic Editors: H. D. Hochheimer, C. Homes, A. N. Kocharian, A. McGurn, and A. Oyamada

Copyright © 2013 R. Lydia and P. Sreedhara Reddy. 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

We have investigated the effect of pH on the structural and optical properties of chemical coprecipitated Cu2ZnSnS4 (CZTS) nanoparticles. The CZTS nanoparticles have been successfully synthesized at different pH values ranging from 6 to 9, keeping all other deposition parameters as constant. X-ray diffraction and Raman studies confirmed the Kesterite structure. The powders synthesized at a pH value of 8 exhibited preferred orientation along (112) and (220) with near stoichiometric ratio. The as synthesized nanoparticles exhibited direct band gap of 1.4 eV which is an optimum value for the absorber layer in the fabrication of photovoltaic cells.