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Luminescence and creation of electron-hole trapping centers in alkali metal sulfates activated by Pb2+ impurity

https://doi.org/10.32523/ejpfm.2024080104

Abstract

The nature of the impurity emission and the process of creating intrinsic and impurity electron-hole trapping centers were studied by spectroscopic and thermal activation methods in Na2SO4-Pb and K2SO4-Pb phosphors. The combined radiative electronic state is formed from intrinsic SO3−4 - SO4 and impurity Pb+-SO4 electron-hole trapping centers in UV-irradiated phosphors with a photon energy of 6.2 eV at 80 K. Emissions of 3.2 eV and 3.6 eV resulting from irradiation with photons with an energy of 6.2 eV are associated with intracenter transitions of 3p1 - 1s0 in Pb2+ located in nonequivalent positions of the Na2SO4 lattice.

About the Authors

T.N. Nurakhmetov
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



R.K. Shamieva
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



Zh.M. Salikhodzha
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



N.I. Temirkulova
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



T.T. Alibay
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



B.M. Sadykova
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



B.N. Yussupbekova
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



A.A. Kabdulkak
L.N. Gumilyov Eurasian National University
Kazakhstan

Astana



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Review

For citations:


Nurakhmetov T., Shamieva R., Salikhodzha Zh., Temirkulova N., Alibay T., Sadykova B., Yussupbekova B., Kabdulkak A. Luminescence and creation of electron-hole trapping centers in alkali metal sulfates activated by Pb2+ impurity. Eurasian Journal of Physics and Functional Materials. 2024;8(1):33-44. https://doi.org/10.32523/ejpfm.2024080104

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ISSN 2522-9869 (Print)
ISSN 2616-8537 (Online)