Photoconductivity and photoluminescence features of γ-irradiated GaS₀.₇₅Se₀.₂₅‹Er› single crystals

Abstract

The effect of γ-radiation with Е = 1.3 MeV energy and Dγ = 10…200 krad dose on photoconductivity and photoluminescence features of GaS₀.₇₅Se₀.₂₅‹Er› single crystals was studied. When analyzing the experimental data it was established that after doping with the rare-earth element erbium N = 10¹⁸ cm⁻³ and γ-radiation the photoconductivity value and the intensity of photoluminescence radiation increased in the investigated samples. A defect-formation model explaining the observed characteristics was proposed.