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Features of photoconductivity and luminescence of CdS thin films and Cd_1-xZn_xS solid solutions under laser excitation

Russian version

DOI: 10.21883/EOS.2022.10.54868.2983-22

Salmanov V. M.¹, Guseinov A. G.¹, Jafarov M. A.¹, Mamedov R. M.¹, Mamedova T. A.¹

¹Baku State University, Baku, Azerbaijan

Email: vagif_salmanov@yahoo.com

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Abstract
References
Статистика просмотров

The features of photoconductivity and luminescence of CdS thin films and Cd_1-xZn_xS solid solutions obtained by chemical pulverization with subsequent pyrolysis under laser excitation have been studied experimentally. Pulsed liquid (473-547 nm) and nitrogen (337 nm) lasers were used as a radiation source. An experimental study was made of the photoconductivity and photoluminescence spectra of Cd_1-xZn_xS thin films depending on the composition x at different excitation intensities and the relaxation curves of nonequilibrium photoconductivity. It is shown that the observed features in the photoconductivity and photoluminescence spectra of Cd_1-xZn_xS thin films are due to direct band-to-band transitions. Amplification of light is observed at high intensities of optical excitation in thin CdS films. Keywords: Thin films CdS, Cd_1-xZn_xS, laser, photoconductivity spectra, photoluminescence

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