DEPENDENCE OF SPACE-CHARGE REGION CONDUCTIVITYOF NONIDEAL HETEROJUNCTION FROM PHOTOEXCITATIONI CONDITIONS
It is shown that nonideal CdS-Cu2S heterojunction illumination results in essential space-charge region width reduction andchange of a potential barrier form. It is established that this change is the most expressed near the heteroboundary and occurs even atvery small intensity of stimulating light. It is connected with the capture of nonequilibrium charge on local centers, presented in spacecharge region. Such change ofthe form of a potential barrier results in essential change of tunnel hopping conductivity of a spatial chargenonideal heterojunction.