The creation of the intrinsic emission spectrum and the formation of capture centers in K2SO4 and K2SO4 -Tl crystals

Abstract

In this work, the spectrum of creating intrinsic emission bands and the formation of electron-hole trapping centers
in K2SO4 and K2SO4 − Tl+ crystals are purposefully investigated by vacuum-ultraviolet and thermal activation spectroscopy methods. When excited by photons with energies from 4 eV to 12 eV at 15 ÷ 300 К, intrinsic emission bands were detected at 5.5- 5.0 eV, 4.2-4.0 eV, 3.7-3.8 eV and 3,64 eV arising from the recombination of electrons with no equivalently located holes and electron T0 and Tl+ SO−
4 - hole capture centers in K2SO4 − Tl+ .