najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-5-702-709najo-164Research ArticleCHEMISTRY AND MATERIAL SCIENCEХИМИЯ И МАТЕРИАЛОВЕДЕНИЕHighly dispersed anti-Stokes phosphors based on KGd2F7:Yb,Er single-phase solid solutionsВысокодисперсные антистоксовые люминофоры на основе однофазных твердых растворов KGd2F7:Yb,Erhttps://orcid.org/0000-0003-0976-5192ЗахароваА. С.ZakharovaAnna S.

Москва

Anna S. Zakharova

Moscow

AnyaZakharova2606@mail.ruhttps://orcid.org/0000-0002-7669-1106КузнецовС. В.KuznetsovSergey V.

Москва

Sergey V. Kuznetsov

Moscow

kouznetzovsv@gmail.comhttps://orcid.org/0000-0001-7874-7284АлександровА. А.AlexandrovAlexander A.

Москва

Alexander A. Alexandrov

Moscow

alexandrov1996@yandex.ruhttps://orcid.org/0000-0002-3634-8709ПоминоваД. В.PominovaDaria V.

Москва

Daria V. Pominova

Moscow

pominovadv@gmail.comhttps://orcid.org/0000-0001-5029-8560ВороновВ. В.VoronovValery V.

Москва

Valery V. Voronov

Moscow

voronov@lst.gpi.ruhttps://orcid.org/0000-0002-2918-3926ФёдоровП. П.FedorovPavel P.

Москва

Pavel P. Fedorov

Moscow

ppfedorov@yandex.ruhttps://orcid.org/0000-0003-2343-2140ИвановВ. К.IvanovVladimir K.

Москва

Vladimir K. Ivanov

Moscow

van@igic.ras.ruИнститут общей и неорганической химии им. Н.С. Курнакова Российской академии наук; Институт общей физики им. А.М. Прохорова Российской академии наук; Национальный исследовательский университет «Высшая школа экономики»Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Prokhorov General Physics Institute of the Russian Academy of Sciences; National Research University Higher School of EconomicsИнститут общей физики им. А.М. Прохорова Российской академии наукProkhorov General Physics Institute of the Russian Academy of SciencesИнститут общей и неорганической химии им. Н.С. Курнакова Российской академии наук; Институт общей физики им. А.М. Прохорова Российской академии наукKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Prokhorov General Physics Institute of the Russian Academy of SciencesИнститут общей и неорганической химии им. Н.С. Курнакова Российской академии наукKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences202403062025155702709Copyright © Zakharova A.S., Kuznetsov S.V., Alexandrov A.A., Pominova D.V., Voronov V.V., Fedorov P.P., Ivanov V.K., 20252025Захарова А.С., Кузнецов С.В., Александров А.А., Поминова Д.В., Воронов В.В., Фёдоров П.П., Иванов В.К.Zakharova A.S., Kuznetsov S.V., Alexandrov A.A., Pominova D.V., Voronov V.V., Fedorov P.P., Ivanov V.K.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/164

The possibility of doping the KGd2F7 matrix with ytterbium and erbium ions by introducing yttrium ions with a concentration of 25 mol.% was confirmed and the conditions were determined for the synthesis of anti-Stokes phosphors based on single-phase KGd2F7:Yb,Er solid solutions. The dependences were revealed of the sizes of coherent scattering regions, crystal lattice parameters, and energy yield of luminescence on the temperature and duration of heat treatment. Heat treatment conditions were determined to ensure the achievement of intense anti-Stokes luminescence. As a result, effective phosphors KGd2F7:Yb (20.0 mol.%),Er (4.0 mol.%) with an energy yield of up-conversion luminescence of 3.80 % were developed. Disordering of the crystal structure (transition from cubic to tetragonal modification) at a temperature of 600 ◦C was recorded, corresponding to the rule of Ostwald steps.

Подверждена возможность легирования матрицы KGd2F7 ионами иттербия и эрбия с помощью введения в неё ионов иттрия с концентрацией 25 мол.% и определены условия синтеза антистоксовых люминофоров на основе однофазных твёрдых растворов KGd2F7:Yb,Er. Выявлена зависимость размеров областей когерентного рассеяния, параметров кристаллической решетки и энергетического выхода люминесценции от температуры и длительности термообработки. Определены условия термообработки, обеспечивающие достижение интенсивной антистоксовой люминесценции. В результате разработаны эффективные люминофоры KGd2F7:Yb(20,0 мол.%),Er(4,0 мол.%) с энергетическим выходом ап-конверсионной люминесценции 3,80%. Зафиксировано разупорядочение кристаллической структуры (переход из кубической в тетрагональную модификацию) при температуре 600оС, соответствующее правилу ступеней Оствальда.

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