Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Specific Features of Formation of Electron and Hole Trapping Centers in Irradiated CaSO4-Mn and BaSO4-Mn

Turlybek Nurakhmetov
,
Temirulan Alibay
* ORCID logo ,
Keleshek Zhangylyssov
,
Dulat Daurenbekov
ORCID logo ,
Amangeldy Zhunusbekov
,
Aset Kainarbay
,
Batsaiy Sadykova
,
Doszhan Tolekov
,
Raushan Shamiyeva
Version 1 : Received: 26 May 2023 / Approved: 29 May 2023 / Online: 29 May 2023 (13:38:52 CEST)

A peer-reviewed article of this Preprint also exists.

Nurakhmetov, T.N.; Alibay, T.T.; Zhangylyssov, K.B.; Daurenbekov, D.H.; Zhunusbekov, A.M.; Kainarbay, A.Z.; Sadykova, B.M.; Tolekov, D.A.; Shamiyeva, R.K. Specific Features of Formation of Electron and Hole Trapping Centers in Irradiated CaSO4-Mn and BaSO4-Mn. Crystals 2023, 13, 1054. Nurakhmetov, T.N.; Alibay, T.T.; Zhangylyssov, K.B.; Daurenbekov, D.H.; Zhunusbekov, A.M.; Kainarbay, A.Z.; Sadykova, B.M.; Tolekov, D.A.; Shamiyeva, R.K. Specific Features of Formation of Electron and Hole Trapping Centers in Irradiated CaSO4-Mn and BaSO4-Mn. Crystals 2023, 13, 1054.

Abstract

Spectroscopic methods are used to study the processes of accumulation of electron and hole trapping centers and energy transfer of electronic excitations to impurities in CaSO4-Mn and BaSO4-Mn. It is shown that the transfer of energy from the host to impurities occurs at the moment of charge transfer from the excited anionic complex SO_4^(2-) to the hybrid radiative electronic states at 2.95–3.1 eV formed from the electronic states of the Mn^(+)-SO_4^(-) and SO_4^(3-)-SO_4^(-) trapping centers. It was found that, in sulfates, under irradiation, as a result of charge transfer from excited anionic complexes of the host to the excited states of impurities Tl^(+),Cu^(+),Mn^(2+), hybrid radiative states emerge at 2.95–3.15 eV, occupying the same energy levels as the intrinsic electronic trapping center SO_4^(3-) of the host at 2.95–3.1 eV.

Keywords

Intrinsic emission, recombination, electron-hole trap centers, sulfate, phosphor.

Subject

Physical Sciences, Condensed Matter Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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