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Sol-gel synthesis of thermoluminescent Cd-doped ZnTe nanoparticles
, Article Indian Journal of Pure and Applied Physics ; Volume 53, Issue 12 , 2015 , Pages 804-807 ; 00195596 (ISSN) ; Akhavan, O ; Hatami, H ; Hoseinkhani, P ; Sharif University of Technology
National Institute of Science Communication and Information Resources (NISCAIR)
2015
Abstract
The Cd (3 wt%)-doped ZnTe nanoparticles with average size of 5 nm and band gap energy of 3.15 eV were synthesized by sol-gel method. The optical properties (such as band gap energy) and the size distribution of the nanoparticles have been investigated by using UV-Vis spectroscopy and transmission electron microscopy, respectively. Then, thermoluminescence property of the nanoparticles exposed to various doses of gamma radiation of Cs137 has been studied. The thermoluminescence glow peak of the nanoparticles showed a displacement from 290 to 230°C by increasing the dose of gamma radiation from 7.5 to 67.5 mSv. The thermoluminescence intensity of the synthesized Cd-doped ZnTe nanoparticles...