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 - SO−4 and impurity Pb+-SO−4 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. NurakhmetovKazakhstan
Astana
R.K. Shamieva
Kazakhstan
Astana
Zh.M. Salikhodzha
Kazakhstan
Astana
N.I. Temirkulova
Kazakhstan
Astana
T.T. Alibay
Kazakhstan
Astana
B.M. Sadykova
Kazakhstan
Astana
B.N. Yussupbekova
Kazakhstan
Astana
A.A. Kabdulkak
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