Activation of impurities in ZnSe crystals, stimulated by a laser shock wave

The effect of a laser shock wave on the photoconductivity spectra and the t hermally stimulated conductivity spectra and also on the temperature depend ence of the photocurrent and dark current of ZnSe single crystals with diff erent residual impurity levels is investigated. It is shown that a temperat ure dependence of the dark currents after passage of a shock wave is observ ed at higher shock-wave pressures for the less defective crystals, while ac tivation of the photocurrent and dark current is due to the release of resi dual impurities from clusters during passage of the shock wave. (C) 1999 Am erican Institute of Physics. [S1063-7826(99)00611-0].