Author(s)

Tokhirbek Imomalievich Rakhmonov

Department of Physics, Ferghana Polytechnic Institute, Ferghana, Uzbekistan.

The results of a study of the energy spectra of the activation of intrinsic defects of a photosensitive film made from the CdSe_xS_1-x solid solution depending on the conditions of preparation and heat treatment in various media are presented. It is shown that at x = 0.8 cadmium vacancies create a deep level with an activation energy Е_v + (0.63 ± 0.02) eV, a complex of chlorine atom with a cadmium vacancy creates a level Е_v + (0.43 ± 0.02) eV, as well as the fast recombination center Еv + (0.92 ± 0.02) eV. The formation of selenium vacancies due to the introduction of chlorine and its combination with cadmium leads to the appearance of a sticking level Е_c - (0.19 ± 0.02) eV. CdSe_0.8S_0.2 films can be used to develop light emitting diodes, photo sensors, IR and visible lasers.

Thin Polycrystalline Film, Solid Solution, Photoconductivity, Activation Energy Spectrum, Substrate Temperature, Deep Impurity Centers

Rakhmonov, T. (2022) Photosensitivity Spectra of Thin Films from a CdSe_xS_1-x Solid Solution. Journal of Applied Mathematics and Physics, 10, 3676-3683. doi: 10.4236/jamp.2022.1012245.