Regular Article

The nonmonotonicity of the photocurrent increase due to the barrier photoconductivity of nanocluster Cd_1−xZn_xS films

¹ Military Educational and Scientific Center of the Air Force “N.E. Zhukovsky and Yu.A. Gagarin Air Force Academy”, Starych Bol’schevikov st. 54a, 394064 Voronezh, Russia
² Department of Physics, Voronezh State University, Universitetskaya sq. 1, 394006 Voronezh, Russia

^a e-mail: mtl084@yandex.ru

Received: 5 April 2020
Received in final form: 21 June 2020
Published online: 1 September 2020

Abstract

The results of a study of the excitation kinetics of photoconductivity of pyrolytic CdZnS films with a nanostructured surface are presented in this paper. It is observed that the time dependences of the photoconductivity of the studied structures under their own excitation have a flash character. To explain the flash character of the time dependences of photoconductivity excitation, the model is proposed that takes into account the localization centers whose cross-section of charge carrier capture is functionally related to the optical modulation of the surface potential barrier.