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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-1804</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>СПЕКТРОСКОПИЯ ТВЕРДЫХ ТЕЛ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SPECTROSCOPY OF SOLIDS</subject></subj-group></article-categories><title-group><article-title>Кинетика фотолюминесценции кристаллов щелочноземельного тиогаллата CaGa2S4:Nd,Yb при комнатной температуре</article-title><trans-title-group xml:lang="en"><trans-title>Kinetics of Photoluminescence of CaGa2S4:Nd,Yb Crystals at Room Temperature</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Першукевич</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Pershukevich</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">p.persh@ifanbel.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тагиев</surname><given-names>О. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Tagiev</surname><given-names>O. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баку</p></bio><bio xml:lang="en"><p>Baku</p></bio><email xlink:type="simple">azhep@physics.ab.az</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Асадов</surname><given-names>Э. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Asadov</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баку</p></bio><bio xml:lang="en"><p>Baku</p></bio><email xlink:type="simple">azhep@physics.ab.az</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ибрагимова</surname><given-names>Т. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Ibragimova</surname><given-names>T. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баку</p></bio><bio xml:lang="en"><p>Baku</p></bio><email xlink:type="simple">azhep@physics.ab.az</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Казимова</surname><given-names>Ф. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kazimova</surname><given-names>F. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баку</p></bio><bio xml:lang="en"><p>Baku</p></bio><email xlink:type="simple">azhep@physics.ab.az</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бельков</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Belkov</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Луценко</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lutsenko</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мудрый</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Mudryi</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Павловский</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Pavlovskii</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яблонский</surname><given-names>Г. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Yablonskii</surname><given-names>G. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт физики Министерства науки и образования Азербайджана; Филиал Московского государственного университета им. М. В. Ломоносова в Баку</institution></aff><aff xml:lang="en"><institution>Institute of Physics of the Ministry of Science and Education of Azerbaijan; Branch of Moscow State University named after M. V. Lomonosov in Baku</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт физики Министерства науки и образования Азербайджана</institution></aff><aff xml:lang="en"><institution>Institute of Physics of the Ministry of Science and Education of Azerbaijan</institution></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Институт физики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Physics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Научно-практический центр НАН Беларуси по материаловедению</institution></aff><aff xml:lang="en"><institution>State Scientific and Practical Center of the National Academy of Sciences of Belarus for Materials Science</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>27</day><month>03</month><year>2025</year></pub-date><volume>92</volume><issue>2</issue><fpage>178</fpage><lpage>186</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Першукевич П.П., Тагиев О.Б., Асадов Э.Г., Ибрагимова Т.Ш., Казимова Ф.А., Бельков М.В., Луценко Е.В., Мудрый А.В., Павловский В.Н., Яблонский Г.П., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Першукевич П.П., Тагиев О.Б., Асадов Э.Г., Ибрагимова Т.Ш., Казимова Ф.А., Бельков М.В., Луценко Е.В., Мудрый А.В., Павловский В.Н., Яблонский Г.П.</copyright-holder><copyright-holder xml:lang="en">Pershukevich P.P., Tagiev O.B., Asadov E.G., Ibragimova T.S., Kazimova F.A., Belkov M.V., Lutsenko E.V., Mudryi A.V., Pavlovskii V.N., Yablonskii G.P.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://zhps.ejournal.by/jour/article/view/1804">https://zhps.ejournal.by/jour/article/view/1804</self-uri><abstract><p>Исследованы спектры фотолюминесценции (ФЛ), спектры возбуждения ФЛ (СВФЛ) и кинетика ФЛ микропорошков соединений CaGa2S4:3%Nd,5%Yb и CaGa2S4:3%Nd при комнатной температуре в широком диапазоне уровней непрерывного и импульсного оптического возбуждения. В спектрах ФЛ и СВФЛ идентифицированы полосы переходов ионов Nd3+ в интервале длин волн 300— 1500 нм. Установлено, что вследствие легирования кристаллов CaGa2S4:3%Nd ионами иттербия в СВФЛ появляется интенсивная фиолетово-зеленая полоса с максимумом около 488 нм. При возбуждении в пределах этой полосы интенсивности ФЛ инфракрасных полос неодима возрастают на два порядка, а вне этой полосы — на один порядок по сравнению с аналогичными интенсивностями ФЛ нелегированного кристалла. Наблюдается экспоненциальное затухание ФЛ при возбуждении в полосы поглощения Nd и ее разгорание с последующим экспоненциальным затуханием при возбуждении в широкую полосу, возникающую при легировании CaGa2S4:Nd иттербием. Основные закономерности кинетики затухания ФЛ в соединении CaGa2S4:3%Nd,5%Yb интерпретируются в рамках безызлучательного переноса энергии с применением математической модели.</p></abstract><trans-abstract xml:lang="en"><p>The photoluminescence (PL) spectra, PL excitation spectra (PLES) and kinetics of FL of micropowders of CaGa2S4:3%Nd,5%Yb and CaGa2S4:3%Nd compounds at room temperature were studied in a wide range of optical excitation levels. In the PL and PLES, the transition bands of Nd3+ ions in the wavelength range of 300–1500 nm were identified. It was found that due to doping of CaGa2S4:3%Nd crystals with ytterbium ions, an intense violet-green band with a maximum at about 488 nm appears in the PLES. When excited within this band, the PL intensities in the IR bands of neodymium increase by 2 orders of magnitude, and outside this band – by 1 order of magnitude compared to similar intensities of undoped crystal. In the PL kinetics, sections with increasing luminescence intensity over time were found, as well as sections with nonmonoexponential and monoexponential decay laws depending on the wavelength of the exciting light. The main observed regularities in the kinetics of PL decay of CaGa2S4:3%Nd,5%Yb are interpreted in the framework of nonradiative energy transfer (Förster Resonance Energy Transfer – FRET) using a mathematical model.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>соединение CaGa2S4:Nd</kwd><kwd>Yb</kwd><kwd>фотолюминесценция</kwd><kwd>спектр возбуждения</kwd><kwd>кинетика затухания фотолюминесценции</kwd><kwd>безызлучательный перенос энергии</kwd></kwd-group><kwd-group xml:lang="en"><kwd>CaGa2S4:Nd</kwd><kwd>Yb compound</kwd><kwd>photoluminescence</kwd><kwd>excitation spectrum</kwd><kwd>photoluminescence decay kinetics</kwd><kwd>nonradiative energy transfer</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при частичной финансовой поддержке ГПНИ Республики Беларусь “Фотоника и электроника для инноваций” (подпрограмма “Опто- и СВЧ-электроника”, задание 2.1 и подпрограмма “Фотоника и ее применение”, задание 1.5).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">A. 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