Dynamics of modulation spectrums of piezophotoconductivity of monopolar semiconductor

Abstract

Piezophotoconductivity is being analyzed - phenomenon stimulated by common action of light from spectrum region that corresponds to interband absorption and strain. The case of interband optical absorption of the system that is under the influence of adiabatic low frequency disturbance, caused by pressure, and high frequency disturbance, caused by light action, is considered. It is shown that absorption factor of a system, which is under an action of combined disturbance, is a periodic time function with the period determined by low frequency disturbance. The equation of dynamics of nonequilibrium current carriers' concentration in the conditions of acoustic-light excitation was obtained. The peculiarities of dynamics of spectrum of interband absorption of the strained semiconductor were considered.