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


Number 2_Vol.5

AUTHORS: 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: 10.32523/ejpfm.2021050207

PAGES: 140 - 147

DATE: 2021-06-22


ABSTRACT

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-SO4--centers are formed during the trap of electrons by Cu+-centers and during localization of SO4--radicals in the form of localized hole centers.


KEYWORDS

electron, hole, trap centers, sulfates, crystals, luminescence


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