TEMPERATURE DEPENDENCE OF PHOTOINDUCED ANISOTROPY IN THE PHOTOCONDUCTIVITY OF As2Se3 AND Sb2S3 THIN FILMS
Abstract
The temperature dependence of photoinduced anisotropy in the photoconductivity of As2Se3 and Sb2S3 thin films was investigated, in the interval between -50 and 70°C. Our results demonstrate that for both As2Se3 and Sb2S3 thin films, the anisotropy percentage falls with increasing temperature. We surmise that the aligning effect of the linearly polarized light was diluted with increasing temperature, because the latter induces similar mechanisms to those induced by polarized light, but in an isotropic fashion.