Eurasian Journal of Physics and Functional Materials (Jun 2021)

Intrinsic emission and electron-hole trapping centers in crystals Li2SO4-Cu

  • T.N. Nurakhmetov,
  • Zh.M. Salikhodzha,
  • M.Y. Dolomatov,
  • B.N. Yussupbekova,
  • A.M. Zhunusbekov,
  • A.Zh. Kainarbay,
  • D.H. Daurenbekov,
  • B.M. Sadykova,
  • K.B. Zhangylyssov,
  • T.T. Alibay,
  • D.A. Tolekov

DOI
https://doi.org/10.32523/ejpfm.2021050207
Journal volume & issue
Vol. 5, no. 2
pp. 140 – 147

Abstract

Read online

In the present work, the emission and excitation spectra in Li2SO4-Cu crystals have been obtained by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. We have studied the nature of emission from a pressed and annealed sample of Li2SO4-Cu powders. It has been revealed that at low temperatures Cu0-SO−4 -centers are formed during the trap of electrons by Cu+ -centers and during localization of SO−4 -radicals in the form of localized hole centers.

Keywords