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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">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2022-22-5-896-902</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-72</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>НОВЫЕ МАТЕРИАЛЫ И НАНОТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIAL SCIENCE AND NANOTECHNOLOGIES</subject></subj-group></article-categories><title-group><article-title>Исследование спектрально-люминесцентных свойств квантовых точек CsPb(BrCl)3 во фторфосфатных стеклах</article-title><trans-title-group xml:lang="en"><trans-title>Investigation of spectral-luminescent properties of cesium CsPb(BrCl)3 quantum dots in fluorophosphate glasses</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8101-3134</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макурин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Makurin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Макурин Артем Александрович — студент</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Artem A. Makurin — Student</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">temkkaa1.8@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0134-8434</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колобкова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kolobkova</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Колобкова Елена Вячеславовна — доктор химических наук, профессор, профессор</p><p>Санкт-Петербург, 197101</p><p>sc 7004361788</p></bio><bio xml:lang="en"><p>Elena V. Kolobkova — D. Sc. (Chemistry), Full Professor</p><p>Saint Petersburg, 197101</p><p>sc 7004361788</p></bio><email xlink:type="simple">kolobok106@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет ИТМО</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ITMO University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>12</day><month>12</month><year>2024</year></pub-date><volume>22</volume><issue>5</issue><fpage>896</fpage><lpage>902</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Макурин А.А., Колобкова Е.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Макурин А.А., Колобкова Е.В.</copyright-holder><copyright-holder xml:lang="en">Makurin A.A., Kolobkova E.A.</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://ntv.elpub.ru/jour/article/view/72">https://ntv.elpub.ru/jour/article/view/72</self-uri><abstract><sec><title>Предмет исследования</title><p>Предмет исследования. В рамках научного проекта «Исследование спектрально-люминесцентных свойств квантовых точек CsPb(BrCl)3 во фторфосфатных стеклах» синтезированы и исследованы квантовые точки CsPbX3 (X = Br, Cl).</p></sec><sec><title>Методика исследования</title><p>Методика исследования. Исследование спектров поглощения выполнено с помощью двулучевого спектрофотометра Perkin Elmer lambda 650. Для получения спектров люминесценции использован спектрофлуориметр Perkin Elmer LS50B. Изучены температурные зависимости спектров люминесценции посредством оригинальной установки, включающей спектрофлуориметр, многомодовое оптическое волокно, криостат и температурную приставку. Возбуждающий свет от лампы спектрофлуориметра фокусировался на входной канал оптического волокна. После выхода из канала излучение собиралось линзой, в фокусе которой находился образец, закрепленный в термостате. Люминесценция образца собиралась в обратном направлении с выводом на приемник спектрофлуориметра, который соединен с компьютером. Термостат, в свою очередь, был подключен к криогенной приставке «Variable Temperature Cell», позволяющей регулировать температуру в пределах от 74 до 472 К.</p></sec><sec><title>Основные результаты</title><p>Основные результаты. Показано, что при увеличении времени термообработки образцов происходит рост квантовых точек, что приводит к уменьшению ширины запрещенной зоны вследствие квантово-размерного эффекта. При замене в CsPbBr3 брома на хлор были получены смешанные нанокристаллы CsPb(BrCl)3, что привело к сдвигу полос поглощения и люминесценции в коротковолновую область. Таким образом, выбирая различные лиганды для CsPbX3 (X = Br, Cl), изменяя их соотношение и условия термообработки, можно перестроить длину волны люминесценции в широкой области видимого диапазона. Исследование зависимости ширины запрещенной зоны от температуры наглядно показало влияние фазовых переходов. Определена последовательность фазовых переходов для различных химических составов, а именно, был обнаружен вклад введения хлора в изменение температурной зависимости ширины запрещенной зоны в диапазоне от 180 до 400 К. Предположено, что основными причинами тушения люминесценции выше 300 К являются фазовые переходы.</p></sec><sec><title>Практическая значимость</title><p>Практическая значимость. В результате доказано, что фторфосфатное стекло — химически устойчивая среда для защиты квантовых точек от внешних воздействий. В работе получена возможность создания стабильных люминофоров, новых лазерных сред и люминесцирующих покрытий как белого света, так и во всем видимом диапазоне.</p></sec></abstract><trans-abstract xml:lang="en"><p>Within the framework of the scientific project “Investigation of spectral-luminescent properties of CsPb(BrCl)3 quantum dots in fluorophosphate glasses” CsPbX3 (X = Br, Cl) quantum dots were synthesized and investigated. The absorption spectra were studied using a Perkin Elmer lambda 650 double beam spectrophotometer. A Perkin Elmer LS50B spectrofluorimeter was used to obtain luminescence spectra. The temperature dependences were studied by means of an original setup, including a spectrofluorimeter, a multimode optical fiber, a cryostat and a temperature stand. The exciting light from the spectrofluorimeter lamp was focused on the input channel of the optical fiber. After leaving the channel, the radiation was collected by a lens in the focus of which was a sample fixed in a thermostat. The luminescence of the sample was collected in the opposite direction with the output to the receiver of the spectrofluorimeter, which is connected to the computer. The thermostat, in turn, was connected to a cryogenic set-top box with variable temperature, which allows adjusting the temperature in the range from 74 to 472 K. It is shown that an increase in the heat treatment time leads to an increase in quantum dots and, accordingly, to a decrease in the band gap due to the quantum confinement effect. When replacing bromine in CsPbBr3 with chlorine, mixed CsPb(BrCl)3 nanocrystals were obtained which leads to a shift of the absorption and luminescence bands to the short-wavelength region. Thus, by choosing different ligands for CsPbX3 (X = Br, Cl), changing their ratio and heat treatment conditions, it is possible to adjust the wavelength of luminescence in a wide area of the visible range. The study of the dependence of the band gap width on temperature clearly showed the presence of phase transformations of the crystal structure. The sequence of phase transitions for various chemical compositions was determined, namely, the contribution of chlorine to the change in dependence in the range from 180 to 400 K. It is assumed that the main causes of luminescence quenching above 300 K are phase transitions. As a result, it is proved that fluorophosphate glass is a chemically stable medium for protecting quantum dots from external influences. The possibility of creating stable phosphors, new laser media and luminescent coatings of both white light and in the entire visible range has been obtained.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>квантовые точки</kwd><kwd>смешанные нанокристаллы</kwd><kwd>фторфосфатное стекло</kwd><kwd>анионное замещение</kwd><kwd>квантово-размерный эффект</kwd><kwd>температурный сдвиг запрещенной зоны</kwd><kwd>фазовые переходы в кристаллах</kwd></kwd-group><kwd-group xml:lang="en"><kwd>quantum dots</kwd><kwd>mixed nanocrystals</kwd><kwd>fluorophosphate glass</kwd><kwd>anion-exchange</kwd><kwd>quantum-dimensional effect</kwd><kwd>forbidden gap temperature shift</kwd><kwd>phase changes in crystals</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kolobkova E.V., Kuznetsova M.S., Nikonorov N.V. Perovskite CsPbX3 (X = Cl, Br, I) Nanocrystals in fluorophosphate glasses // Journal of Non-Crystalline Solids. 2021. V. 563. P. 120811 https://doi.org/10.1016/j.jnoncrysol.2021.120811</mixed-citation><mixed-citation xml:lang="en">Kolobkova E.V., Kuznetsova M.S., Nikonorov N.V. Perovskite CsPbX3 (X = Cl, Br, I) Nanocrystals in fluorophosphate glasses. Journal of Non-Crystalline Solids, 2021, vol. 563, pp. 120811 https://doi.org/10.1016/j.jnoncrysol.2021.120811</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Kovalenko M.V., Protesescu L., Bodnarchuk M.I. Properties and potential optoelectronic applications of lead halide perovskite nanocrystals // Science. 2017. V. 358. N 6364. P. 745–750. https://doi.org/10.1126/science.aam7093</mixed-citation><mixed-citation xml:lang="en">Kovalenko M.V., Protesescu L., Bodnarchuk M.I. Properties and potential optoelectronic applications of lead halide perovskite nanocrystals. Science, 2017, vol. 358, no. 6364, pp. 745–750. https://doi.org/10.1126/science.aam7093</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Yuan X., Ji S., De Siena M.C., Fei L., Zhao Z., Wang Y., Li H., Zhao J., Gamelin D.R. Photoluminescence temperature dependence, dynamics, and quantum efficiencies in Mn2+-doped CsPbCl3 perovskite nanocrystals with varied dopant concentration // Chemistry of Materials. 2017. V. 29. N 18. P. 8003–8011. https://doi.org/10.1021/acs.chemmater.7b03311</mixed-citation><mixed-citation xml:lang="en">Yuan X., Ji S., De Siena M.C., Fei L., Zhao Z., Wang Y., Li H., Zhao J., Gamelin D.R. Photoluminescence temperature dependence, dynamics, and quantum efficiencies in Mn2+-doped CsPbCl3 perovskite nanocrystals with varied dopant concentration. Chemistry of Materials, 2017, vol. 29, no. 18, pp. 8003–8011. https://doi.org/10.1021/acs.chemmater.7b03311</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Ai B., Liu C., Wang J., Xie J., Han J., Zhao X. Precipitation and optical properties of CsPbBr3 quantum dots in phosphate glasses // Journal of the American Ceramic Society. 2016. V. 99. N 9. P. 2975–2877. https://doi.org/10.1111/jace.14400</mixed-citation><mixed-citation xml:lang="en">Ai B., Liu C., Wang J., Xie J., Han J., Zhao X. Precipitation and optical properties of CsPbBr3 quantum dots in phosphate glasses. Journal of the American Ceramic Society, 2016, vol. 99, no. 9, pp. 2975–2877. https://doi.org/10.1111/jace.14400</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Di X., Hu Z., Jiang T., He M., Zhou L., Xiang W., Liang X. Use of long-term stable CsPbBr3 perovskite quantum dots in phospho-silicate glass for highly efficient white LEDs // Chemical Communications. 2017. V. 53. N 80. P. 11068–11071. https://doi.org/10.1039/C7CC06486A</mixed-citation><mixed-citation xml:lang="en">Di X., Hu Z., Jiang T., He M., Zhou L., Xiang W., Liang X. Use of long-term stable CsPbBr3 perovskite quantum dots in phospho-silicate glass for highly efficient white LEDs. Chemical Communications, 2017, vol. 53, no. 80, pp. 11068–11071. https://doi.org/10.1039/C7CC06486A</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Ye Y., Zhang W.C., Zhao Z.Y., Wang J., Liu C., Deng Z., Zhao X., Han J. Highly luminescent cesium lead halide perovskite nanocrystals stabilized in glasses for light-emitting applications // Advanced Optical Materials. 2019. V. 7. N 9. P. 1801663. https://doi.org/10.1002/adom.201801663</mixed-citation><mixed-citation xml:lang="en">Ye Y., Zhang W.C., Zhao Z.Y., Wang J., Liu C., Deng Z., Zhao X., Han J. Highly luminescent cesium lead halide perovskite nanocrystals stabilized in glasses for light-emitting applications. Advanced Optical Materials, 2019, vol. 7, no. 9, pp. 1801663. https://doi.org/10.1002/adom.201801663</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Shao G., Liu S., Ding L., Zhang Z., Xiang W., Liang X. KxCs1−xPbBr3 NCs glasses possessing super optical properties and stability for white light emitting diodes // Chemical Engineering Journal. 2019. V. 375. P. 122031. https://doi.org/10.1016/j.cej.2019.122031</mixed-citation><mixed-citation xml:lang="en">Shao G., Liu S., Ding L., Zhang Z., Xiang W., Liang X. KxCs1−xPbBr3 NCs glasses possessing super optical properties and stability for white light emitting diodes. Chemical Engineering Journal, 2019, vol. 375, pp. 122031. https://doi.org/10.1016/j.cej.2019.122031</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Fu Y., Zhu H., Stoumpos C.C., Ding Q., Wang J., Kanatzidis M.G., Zhu X., Jin S. Broad wavelength tunable robust lasing from singlecrystal nanowires of cesium lead halide perovskites (CsPbX3, X = Cl, Br, I) // ACS Nano. 2016. V. 10. N 8. P. 7963–7972. https://doi.org/10.1021/acsnano.6b03916</mixed-citation><mixed-citation xml:lang="en">Fu Y., Zhu H., Stoumpos C.C., Ding Q., Wang J., Kanatzidis M.G., Zhu X., Jin S. Broad wavelength tunable robust lasing from singlecrystal nanowires of cesium lead halide perovskites (CsPbX3, X = Cl, Br, I). ACS Nano, 2016, vol. 10, no. 8, pp. 7963–7972. https://doi.org/10.1021/acsnano.6b03916</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Wang D., Wu D., Dong D., Chen W., Hao J., Qin J., Xu B., Wang K., Suna X. Polarized emission from CsPbX3 perovskite quantum dots // Nanoscale. 2016. V. 8. N 22. P. 11565–11570. https://doi.org/10.1039/C6NR01915C</mixed-citation><mixed-citation xml:lang="en">Wang D., Wu D., Dong D., Chen W., Hao J., Qin J., Xu B., Wang K., Suna X. Polarized emission from CsPbX3 perovskite quantum dots. Nanoscale, 2016, vol. 8, no. 22, pp. 11565–11570. https://doi.org/10.1039/C6NR01915C</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Liu P., Chen W., Wang W., Xu B., Wu D., Hao J., Cao W., Fang F., Li Y., Zeng Y., Pan R., Chen S., Cao W., Sun X.W., Wang K. Haliderich synthesized cesium lead bromide perovskite nanocrystals for light-emitting diodes with improved performance // Chemistry of Materials. 2017. V. 29. N 12. P. 5168–5173. https://doi.org/10.1021/acs.chemmater.7b00692</mixed-citation><mixed-citation xml:lang="en">Liu P., Chen W., Wang W., Xu B., Wu D., Hao J., Cao W., Fang F., Li Y., Zeng Y., Pan R., Chen S., Cao W., Sun X.W., Wang K. Haliderich synthesized cesium lead bromide perovskite nanocrystals for light-emitting diodes with improved performance. Chemistry of Materials, 2017, vol. 29, no. 12, pp. 5168–5173. https://doi.org/10.1021/acs.chemmater.7b00692</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Mei A., Li X., Liu L., Ku Z., Liu T., Rong Y., Xu M., Hu M., Chen J., Yang Y., Grätzel M., Han H. A hole-conductor–free, fully printable mesoscopic perovskite solar cell with high stability // Science. 2014. V. 345. P. 295–298. https://www.science.org/doi/10.1126/science.1254763</mixed-citation><mixed-citation xml:lang="en">Mei A., Li X., Liu L., Ku Z., Liu T., Rong Y., Xu M., Hu M., Chen J., Yang Y., Grätzel M., Han H. A hole-conductor–free, fully printable mesoscopic perovskite solar cell with high stability. Science, 2014, vol. 345, pp. 295–298. https://www.science.org/doi/10.1126/science.1254763</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Lv L., Xu Y., Fang H., Luo W., Xu F., Liu L., Wang B., Zhang X., Yang D., Hu W., Dong A. Generalized colloidal synthesis of highquality, two-dimensional cesium lead halide perovskite nanosheets and their applications in photodetectors // Nanoscale. 2016. V. 8. N 28. P. 13589–13596. https://doi.org/10.1039/C6NR03428D</mixed-citation><mixed-citation xml:lang="en">Lv L., Xu Y., Fang H., Luo W., Xu F., Liu L., Wang B., Zhang X., Yang D., Hu W., Dong A. Generalized colloidal synthesis of highquality, two-dimensional cesium lead halide perovskite nanosheets and their applications in photodetectors. Nanoscale, 2016, vol. 8, no. 28, pp. 13589–13596. https://doi.org/10.1039/C6NR03428D</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Здобнова Т.А., Лебеденко Е.Н., Деев С.М. Квантовые точки для молекулярной диагностики опухолей // Acta Naturae. 2011. V. 3. N 1(8). P. 30–49.</mixed-citation><mixed-citation xml:lang="en">Zdobnova T.A., Lebedenko E.N., Deyev S.M. Qquantum dots for molecular diagnostics of tumors. Acta Naturae, 2011, vol. 3, no. 1, pp. 29–47. https://doi.org/10.32607/20758251-2011-3-1-29-47</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Ai B., Liu C., Deng Z., Wang J., Han J., Zhao X. Low temperature photoluminescence properties of CsPbBr3 quantum dots embedded in glasses // Physical Chemistry Chemical Physics. 2017. V. 19. N 26. P. 17349–17355. https://doi.org/10.1039/C7CP02482G</mixed-citation><mixed-citation xml:lang="en">Ai B., Liu C., Deng Z., Wang J., Han J., Zhao X. Low temperature photoluminescence properties of CsPbBr3 quantum dots embedded in glasses. Physical Chemistry Chemical Physics, 2017, vol. 19, no. 26, pp. 17349–17355. https://doi.org/10.1039/C7CP02482G</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Saran R., Heuer-Jungemann A., Kanaras A.G., Curry R.J. Giant bandgap renormalization and exciton–phonon scattering in perovskite nanocrystals // Advanced Optical Materials. 2017. V. 5. N 17. P. 1700231. https://doi.org/10.1002/adom.201700231</mixed-citation><mixed-citation xml:lang="en">Saran R., Heuer-Jungemann A., Kanaras A.G., Curry R.J. Giant bandgap renormalization and exciton–phonon scattering in perovskite nanocrystals. Advanced Optical Materials, 2017, vol. 5, no. 17, pp. 1700231. https://doi.org/10.1002/adom.201700231</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Nedelcu G., Protesescu L., Yakunin S., Bodnarchuk M.I., Grotevent M.J., Kovalenko M.V. Fast anion-exchange in highly luminescent nanocrystals of cesium lead halide perovskites (CsPbX3, X = Cl, Br, I) // Nano Letters. 2015. V. 15. N 8. P. 5635–5640. https:// doi.org/10.1021/acs.nanolett.5b02404</mixed-citation><mixed-citation xml:lang="en">Nedelcu G., Protesescu L., Yakunin S., Bodnarchuk M.I., Grotevent M.J., Kovalenko M.V. Fast anion-exchange in highly luminescent nanocrystals of cesium lead halide perovskites (CsPbX3, X = Cl, Br, I). Nano Letters, 2015, vol. 15, no. 8, pp. 5635–5640. https://doi.org/10.1021/acs.nanolett.5b02404</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Mannino G., Deretzis I., Smecca E., La Magna A., Alberti A., Ceratti D., Cahen D. Temperature-dependent optical band gap in CsPbBr3, MAPbBr3, and FAPbBr3 single crystals // Journal of Physical Chemistry Letters. 2020. V. 11. N 7. P. 2490–2496. https://doi.org/10.1021/acs.jpclett.0c00295</mixed-citation><mixed-citation xml:lang="en">Mannino G., Deretzis I., Smecca E., La Magna A., Alberti A., Ceratti D., Cahen D. Temperature-dependent optical band gap in CsPbBr3, MAPbBr3, and FAPbBr3 single crystals // Journal of Physical Chemistry Letters. 2020. V. 11. N 7. P. 2490–2496. https://doi.org/10.1021/acs.jpclett.0c00295</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Carabatos-Nédelec C., Oussaïd M., Nitsch K. Raman scattering investigation of cesium plumbochloride, CsPbCl3, phase transitions // Journal of Raman Spectroscopy. 2003. V. 34. N 5. P. 388–393. https://doi.org/10.1002/jrs.1005</mixed-citation><mixed-citation xml:lang="en">Carabatos-Nédelec C., Oussaïd M., Nitsch K. Raman scattering investigation of cesium plumbochloride, CsPbCl3, phase transitions // Journal of Raman Spectroscopy. 2003. V. 34. N 5. P. 388–393. https://doi.org/10.1002/jrs.1005</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
