The effect of microwave radiation on the luminescence properties of CdS and CdTe:Cl single crystals is studied. It is established that the exposure of these semiconductors to short term (≤30 s) microwave radiation substantially modifies their impurity and defect structure. The mechanisms of transformation of the defect subsystem of II-VI single crystals upon microwave treatment are discussed. It is shown that the exper imentally observed changes are defined by the nonthermal effects of microwave radiation at a power density of 7.5 W cm -2 ; at 90 W cm -2 , nonthermal effects are prevailing.
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