Dependence of the X-Ray Dosimetric Parameters of AgGaS2xSe2–2x Single Crystals on Their Composition

Abstract

It is demonstrated that AgGaS_2xSe_2–2x single crystals grown by the chemical transport method are characterized by high X-ray conductivity and X-ray sensitivity coefficients at room temperature. The X-ray dosimetric parameters of crystals are compared. For example, the X-ray conductivity coefficient of AgGaS₂ samples varies within the range of 0.22–3.20 min/R at effective radiation hardness V_a = 25–50 keV and dose rate E = 0.75–78.05 R/min. Single-crystalline AgGaSe₂ samples have higher X-ray dosimetric coefficients than AgGaS₂-based samples. The X-ray conductivity coefficient of AgGaSe₂ varies within the range of 1.2–8.5 min/R at effective radiation hardness V_a = 25–50 keV and dose rate E = 0.75–31.3 R/min. The dose dependences of steady-state X-ray current in AgGaS_2xSe_2–2x are determined.