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International Journal of Photoenergy
Volume 2014 (2014), Article ID 158782, 8 pages
http://dx.doi.org/10.1155/2014/158782
Research Article

Optical, Electrical and Photocatalytic Properties of the Ternary Semiconductors , and

1Facultad de Química, Materiales Universidad Autónoma de Querétaro, 76010 Querétaro, QRO, Mexico
2Centro de Investigación en Materiales Avanzados S.C., Alianza Norte 202, 66600 Apodaca, NL, Mexico
3Escuela Nacional de Estudios Superiores, Unidad León, UNAM, León 36969, GTO, Mexico

Received 14 June 2014; Revised 12 July 2014; Accepted 13 July 2014; Published 3 August 2014

Academic Editor: Jiaguo Yu

Copyright © 2014 Sandra Andrea Mayén-Hernández 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

The effects of vacuum annealing at different temperatures on the optical, electrical and photocatalytic properties of polycrystalline and amorphous thin films of the ternary semiconductor alloys , and were investigated in stacks of binary semiconductors obtained by chemical bath deposition. The electrical properties were measured at room temperature using a four-contact probe in the Van der Pauw configuration. The energy band gap of the films varied from 2.30 to 2.85 eV. The photocatalytic activity of the semiconductor thin films was evaluated by the degradation of an aqueous methylene blue solution. The thin film of annealed under vacuum at 300°C exhibited the highest photocatalytic activity.