Physical properties of CuxAg1−xIn5S8 single crystals and related surface-barrier structures

The electrical properties and photoluminescence spectra of single crystals of the ternary compounds CuIn5S8, AgIn5S8 and their solid solutions have been investigated. We have determined the type of conductivity, the mobility, charge carrier concentrations and energies of the radiative transitions in these materials. We have fabricated surface-barrier structures from these single crystals and measured the voltaic photosensitivity.