Abstract
The temperature dependence of the dc electrical conductivity (300-30°K) and the optical transmission (300-109°K) of plastically deformed CdS crystals have been measured for samples deformed up to 25%. The results yield further evidence for the existence of dislocation energy bands located at energies within 0.3 eV of the valence-band top. A simple band model is presented to describe the observed properties of this system.