ntvНаучно-технический вестник информационных технологий, механики и оптикиScientific and Technical Journal of Information Technologies, Mechanics and Optics2226-14942500-0373Университет ИТМО10.17586/2226-1494-2026-26-2-250-257ntv-586Research ArticleОПТИЧЕСКИЕ СИСТЕМЫ И ТЕХНОЛОГИИOPTICAL ENGINEERINGВлияние термообработки на рост и люминесцентные свойства квантовых точек CsPbI3 во фторофосфатном стеклеEffect of heat treatment on the growth and luminescence of quantum dots CsPbI3 in fluorophosphate glasshttps://orcid.org/0009-0002-3900-9443КапустинГ. А.KapustinG. A.

Капустин Григорий Александрович — студент

Санкт-Петербург, 197101  

Grigory A. Kapustin – Student 

Saint Petersburg, 197101 

grigory414@yandex.ruhttps://orcid.org/0000-0002-7213-8231КузьменкоН. К.KuzmenkoN. K.

Кузьменко Наталья Константиновна — младший научный сотрудник 

Санкт-Петербург, 197101 

sc 57216750549 

Nataliya K. Kuzmenko — Junior Researcher

Saint Petersburg, 197101

sc 57216750549   

nataliakuz01@yandex.ruhttps://orcid.org/0000-0002-0134-8434КолобковаЕ. В.KolobkovaE. V.

Колобкова Елена Вячеславовна — доктор химических наук, профессор, профессор; ведущий научный сотрудник 

Санкт-Петербург, 190013 

Санкт-Петербург, 197101 

sc 57604636700 

Elena V. Kolobkova — D.Sc. (Chemistry), Full Professor; Leading Researcher

Saint Petersburg, 197101

Saint Petersburg, 197101 

sc 57604636700 

kolobok106@rambler.ruУниверситет ИТМОРоссияITMO UniversityRussian FederationСанкт-Петербургский государственный технологический институт (технический университет); Университет ИТМОРоссияSaint Petersburg State Technological University (Technical University); ITMO UniversityRussian Federation202620042026262250257Copyright © Капустин Г.А., Кузьменко Н.К., Колобкова Е.В., 20262026Капустин Г.А., Кузьменко Н.К., Колобкова Е.В.Kapustin G.A., Kuzmenko N.K., Kolobkova E.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ntv.elpub.ru/jour/article/view/586

Введение. Рассмотрено влияние условий термообработки на размеры квантовых точек перовскитов (CsPbI3), сформированных во фторофосфатных стеклах, и изучены их спектральнолюминесцентные свойства. Метод. Фторофосфатные стекла с квантовыми точками CsPbI3 получены методом высокотемпературного синтеза из шихтных реактивов с последующей дополнительной термообработкой выше температуры стеклования Tg. Температура термообработки определялась на основании данных дифференциальной сканирующей калориметрии с применением термоанализатора STA 449F1 Jupiter NIETZSCHE. Исследование спектров поглощения проводилось с помощью двухлучевого спектрофотометра Perkin Elmer Lambda 650. Спектры фотолюминесценции были получены при использовании спектрофлуориметра Perkin Elmer LS50B. Абсолютный квантовый выход измерен с помощью системы измерения абсолютного квантового выхода фотолюминисценции PL (Hamamatsu) с блоком интегрирующей сферы. Основные результаты. Квантовые точки CsPbI3 были сформированы во фторофосфатном стекле. Рост квантовых точек в стекле контролировался термообработкой при температурах выше Tg путем вариации температуры и длительности. Данные оптических измерений подтвердили образование нанокристаллов CsPbI3 с размерами 6–15 нм. При этом фотолюминесценция квантовых точек CsPbI3 изменялась в диапазоне 625–705 нм. Наблюдается немонотонное изменение величины квантового выхода от температуры термообработки. Максимальный квантовый выход фотолюминесценции CsPbI3 составил 13 %. Показано, что квантовый выход фотолюминесценции CsPbI3 с размерами 10–15 нм слабо зависит от размера квантовых точек и изменяется в пределах 10–13 %. Обсуждение. Сделан вывод, что фторофосфатные стекла с квантовыми точками CsPbI3 перспективны в качестве красных люминофоров.

The paper examines the influence of heat treatment conditions on the size of quantum dots of CsPbI3 perovskites formed in fluorophosphate glasses and studies their luminescent properties. Fluorophosphate glasses with CsPbI3 quantum dots were obtained by high-temperature synthesis from blend reagents followed by additional heat treatment above the glass transition temperature. The heat treatment temperature was determined on the basis of differential scanning calorimetry data using STA 449F1 Jupiter Nietzsche. Absorption spectra were obtained using a Perkin Elmer Lambda 650 double beam spectrophotometer. Photoluminescence spectra were obtained using a Perkin Elmer LS50B spectrofluorimeter. The absolute quantum yield was measured using a PhotoLuminescence (PL) absolute quantum yield measurement system (Hamamatsu) with an integrating sphere unit. Quantum dots of CsPbI3 were formed in fluorophosphate glass. The growth of quantum dots in glass was controlled by heat treatment at temperatures above glass-transition temperature Tg by adjusting the temperature and duration. Optical measurement data confirmed the formation of CsPbI3 nanocrystals of 6–15 nm in size. The PL of CsPbI3 quantum dots varied in the range of 625–705 nm. There is a non-monotonic variation of the quantum yield value depending on the heat treatment temperature. The maximum quantum yield of luminescence of pure CsPbI3 was 13 %. It is shown that the quantum yield of PL of CsPbI3 quantum dots with sizes of 6–15 nm weakly depends on the size of quantum dots and varies in the range of 10–13 %. It is concluded that fluorophosphate glasses with CsPbI3 quantum dots can be used as red phosphors.

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