nucВестник НЯЦ РКNNC RK Bulletin1729-75161729-7885Национальный ядерный центр Республики Казахстан10.52676/1729-7885-2025-1-96-103nuc-780Research ArticleСтатьиЛЮМИНЕСЦЕНЦИЯ И ОБРАЗОВАНИЕ ЭЛЕКТРОННО-ДЫРОЧНЫХ ЦЕНТРОВ ЗАХВАТА В ЛЮМИНОФОРЕ CaSO4–BiLUMINESCENCE AND THE FORMATION OF ELECTRON-HOLE TRAPPING CENTERS IN CaSO4–Bi PHOSPHORhttps://orcid.org/0009-0005-3754-0726ШамиеваР. К.ShamiyevaR. K.

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Astana

rasha_arman@bk.ruНурахметовТ. Н.NurakhmetovT. N.

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Astana

T.Nurakhmetov@yandex.kzСалиходжаЖ. М.SalikhodzhaZh. M.

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Astana

sali.zhm64@yandex.kzАлибайТ. Т.AlibayT. T.

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Astana

temirulanalibay@gmail.comСадыковаБ. М.SadykovaB. M.

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Astana

batsaiy_s@mail.ruКайнарбайА. Ж.KainarbayA. Zh.

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Astana

a.kainarbay@yandex.kzЖанылысовК. Б.ZhangylyssovK. B.

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Astana

keleshek92@yandex.ruНурпеисоА. С.NurpeissovA. S.

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Astana

lord_sukre@mail.ruЕвразийский национальный университет имени Л.Н.ГумилеваКазахстанL.N.Gumilyov Eurasian National UniversityKazakhstan2025010420250196103Copyright © Шамиева Р.К., Нурахметов Т.Н., Салиходжа Ж.М., Алибай Т.Т., Садыкова Б.М., Кайнарбай А.Ж., Жанылысов К.Б., Нурпеисо А.С., 20252025Шамиева Р.К., Нурахметов Т.Н., Салиходжа Ж.М., Алибай Т.Т., Садыкова Б.М., Кайнарбай А.Ж., Жанылысов К.Б., Нурпеисо А.С.Shamiyeva R.K., Nurakhmetov T.N., Salikhodzha Z.M., Alibay T.T., Sadykova B.M., Kainarbay A.Z., Zhangylyssov K.B., Nurpeissov A.S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journals.nnc.kz/jour/article/view/780

В люминофоре CaSO4 −Bi  исследованы механизмы создания нового комбинированного электронно-дырочного состояния при 2,95 эВ, 3,1 эВ, 2,6–2,7 эВ и 2,25–2,4 эВ, которое является предраспадным состоянием для передачи энергии от матрицы к излучателям.

По данным исследования спектроскопическими методами и методами термической активации комбинированные электронно-дырочные состояния формируются из собственных SO43− − SO4− и примесных Bi2+ −SO4− электронно-дырочных центров захвата. В свою очередь, собственные и примесные электронно-дырочные центры захвата создаются при возбуждении анионного комплекса SO24− в результате переноса заряда с матрицы на примеси (О2− − Bi3+ ) и соседние анионы (О2− − SO42− ).

Показано, что энергия, накопленная в собственной матрице при внешнем облучении в виде объединенного электронного излучательного состояния SO43− и Bi2+ , распадается в результате процесса рекомбинации и передается примесям.

The mechanisms of creation of a new combined electron-emissive state at 2.95 eV, 3.1 eV, 2.6–2.7 eV and 2.25–2.4 eV, which is a pre-decay state for energy transfer from the matrix to the emitters, were investigated in the CaSO4 −Bi  phosphor. Combined electron-emissive states are formed from intrinsic SO43− − SO4− and impurity Bi2+ −SO4− electronhole trapping centers according to studying via spectroscopic and thermal activation methods. In turn, the intrinsic and impurity electron-hole trapping centers are created during excitation of the anionic complex SO42− as a result of charge transfer from the matrix to impurities (О2− −Bi3+ ) and neighboring anions (О2− − SO42− ). It is shown that the energy accumulated in the intrinsic matrix during external irradiation in the form of a combined electron radiative state of SO43− and Bi2+ decays as a result of the recombination process and is transferred to impurities.

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The authors declare that there are no conflicts of interest present.