Influence of Cu+ impurity on the efficiency of creation of electron hole trapping centers in irradiated Na2SO4-Cu crystals

Abstract

The mechanisms of creation of impurity and intrinsic electron-hole trapping centers in Na2SO4 − Cu crystals have been investigated by spectroscopic methods. It is shown that impurity and intrinsic electron-hole trapping centers in the crystal lattice Na2SO4 − Cu are created in the same energy distances approximately 3.87-4.0 eV and 4.43-4.5 eV. During the annealing of electron-hole trapping centers, the energy of the recombination processes is transferred to impurities.

Keywords

• alkali metal sulfates
• electron-hole pairs
• glow centers
• phosphorescence
• recombination emission
• impurity
• tsl