Science Journal of Physics
February 2012, Volume 2012, ISSN:2276-6367
© Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License.
The effect of gamma-Irradiation on the absorption spectra and optical energy gap of selenium dioxide thin films
Author: 1Riyadh. CH.Abul Hail, 1Hussein F. Hussein, 2Adil A.Al-Fregi
1University of Basrah, College of Education ,Department of physics,Basrah, Iraq.
2University of Basrah, College of Science ,Department of Chemistry,Basrah, Iraq.
Accepted 25 January; Available Online February 2012
Thin films of selenium dioxide (SeO2) were investigated for gamma-irradiation dosimetry purpose. Samples were fabricated using cast method .Thin films of SeO2 were exposed to a Cs-137 gamma-radiation source at a dose rate 0.56 Gy/min at room temperature .Absorption spectra for SeO2 films were recorder and the values of the optical band and energies of localized states for no irradiated and gamma-irradiated samples were calculated. it was found that the optical band gap values were decreased as the radiation dose was increased. The observed change in the optical properties suggest that SeO2 thin film may be considered as an effective material for room temperature real time gamma-radiation
Keyword:gamma-irradiation, optical energy gap, Selenium dioxide, thin film