Alizadekh M. X-ray-induced conductivity ZnSe single crystals as detectors of ionizing radiation

The thesis is devoted to the experimental and theoretical studies of the optical - electrical and spectral - luminescent properties of physical processes occurring in high-resistance wide-band gap (WBG) semiconductor single-crystal zinc selenide (ZnSe) under X-ray excitation and UV excitation. A wide range of experimental methods were used in the work: photo- (PL) and X-ray luminescence (XRL) studies, lux-luminescence characteristics (LLC) of luminescence, lux-ampere characteristics (LAC), and current-voltage characteristics (I – V) of conduction, current relaxation of conduction (RC), phosphorescence (P), thermally stimulated luminescence (TSL) and thermally stimulated conductivity (TSC), dose dependences of luminescence and conductivity at different X-ray intensity (X-) and UV excitation in the wide temperature range (8 – 430 K). Similarly, the nature of the obtained experimental data and interpretation of the research results, a theoretical and kinetic model of the dipole recombination center (Dipole - center) for the 630 nm band (1.92 eV) was proposed, which explains the possibility of implementing two recombination mechanisms at one complex luminescence center.