Table of Contents
Journal of Materials
Volume 2015, Article ID 196545, 6 pages
http://dx.doi.org/10.1155/2015/196545
Research Article

Synthesis and Characterization of Vanadium Doped Zinc Oxide Thick Film for Chemical Sensor Application

1Department of Physics, Jamia Millia Islamia, New Delhi 110025, India
2CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi 110012, India
3Superconductivity Research Laboratory, Department of Physics, Barkatullah University, Bhopal 462026, India

Received 14 June 2015; Revised 22 September 2015; Accepted 7 October 2015

Academic Editor: Achim Trampert

Copyright © 2015 Rayees Ahmad Zargar 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

Zinc oxide and vanadium pentoxide nanoparticles derived by chemical coprecipitation route were used to cast Zn0.96V0.04O thick film by screen printing method. The structural, morphological, optical, and electrical properties of the film were characterized by powder XRD, SEM, Raman, UV-VIS, and DC conductivity techniques. XRD pattern, SEM image, and Raman spectrum of the film confirm the single phase formation of Wurtzite structure with preferential orientation along [] plane, minor variation in lattice parameters, and vanadium ions substitution at zinc sites. Zn0.96V0.04O pellet has been used for sensing ammonia vapor concentrations in 20–50°C temperature range which exhibits maximum responsiveness and sensitivity at 30°C. The minor variations in resistance are observed with ammonia vapor concentration. The adsorption of ammonia vapors through weak hydrogen bonding and its insertion into lattice by nitrogen lone pairs donation at vacant/defect sites in lattice caused by vanadium doping are considered to explain gas sensing mechanism.