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Gamma radiation induced changes in the optical properties of CdTe thin films for dosimetric purposes | ||
| Iraqi Journal of Physics | ||
| Article 1, Volume 10, Issue 17, 2012, Pages 71-76 | ||
| Author | ||
| Rana M. Yas | ||
| Abstract | ||
| The effect of 0.662MeV gamma radiation on the optical properties of the CdTe thin films was studied. 300nm thickness of CdTe samples were irradiated with doses (10, 20, 30,60krad) in room temperature. The absorption spectra for all the samples were recorded using UV- Visible spectrometer in order to calculate the energy gap, width of localized states and optical constants(refractive index, extinction coefficient, real and imaginary parts of dielectric constant). The optical energy gap was found to decrease from (1.53 to 1.48 eV), while the width of localized states increased from (1.34 to 1.49 eV) with the increasing of radiation dose. The behavior of energy gap with the irradiation dose makes the material a good candidate for dosimetry in industrial applications. | ||
| Keywords | ||
| CdTe thin films; Optical Properties; gamma radiation effect | ||
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