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Journal of Sensors
Volume 2016, Article ID 8296936, 5 pages
Research Article

Highly Responsive UV Light Sensors Using Mg-Doped ZnO Nanoparticles

1Center for Micro and Nano Devices (CMND), Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan
2Alamoudi Water Research Chair, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
3School of Chemical & Materials Engineering (SCME), National University of Sciences & Technology (NUST), Sector H-12, Islamabad 44000, Pakistan

Received 30 December 2015; Revised 4 February 2016; Accepted 28 February 2016

Academic Editor: Christos Riziotis

Copyright © 2016 Mirza Shirjeel Alam 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.


Different concentrations of Mg-doped ZnO nanoparticles (NPs) were synthesized by coprecipitation technique at 60°C. XRD data are used to study phase purity and crystal structure in different doping concentrations. The results indicated that increasing the doping from 0~7.5 wt.% caused a subsequent increase in FWHM in XRD and an associated systematic shift towards higher wavelength in the optical properties. Finally, the sensing of UV light is tested by observing the response of nanoparticles by exposing them to UV light and measuring the resistance in presence and absence of UV light.