najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2020-11-4-417-423najo-410Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХSynthesis of NaYF4:Yb, Er up-conversion luminophore from nitrate fluxFedorovP. P.

119991, Moscow

ppfedorov@yandex.ruMayakovaM. N.

119991, Moscow

AlexandrovA. A.

119991, Moscow

VoronovV. V.

119991, Moscow

PominovaD. V.

119991, Moscow

ChernovE. V.

119991, Moscow

IvanovV. K.

119991, Moscow

Prokhorov General Physics Institute of the Russian Academy of SciencesRussian FederationKurnakov Institute of General and Inorganic Chemistry of the Russian Academy of SciencesRussian Federation202029072025114417–423Copyright © Fedorov P.P., Mayakova M.N., Alexandrov A.A., Voronov V.V., Pominova D.V., Chernov E.V., Ivanov V.K., 20252025Fedorov P.P., Mayakova M.N., Alexandrov A.A., Voronov V.V., Pominova D.V., Chernov E.V., Ivanov V.K.Fedorov P.P., Mayakova M.N., Alexandrov A.A., Voronov V.V., Pominova D.V., Chernov E.V., 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/410

The behavior of nanoparticle ensembles was studied using of NaRF4 hexagonal phases. The evolution of particles in the process of rapid and productive synthesis from flux as a result of a chemical reaction was investigated. A low-temperature synthesis process in the medium of sodium nitrate was used. Synthesis of the samples of up-conversion phosphor NaY0.78Yb0.2Er0.02F4 was performed from rare-earth nitrates at 350 – 430 ◦C for 15 – 500 min. NaF was used as the fluorinating agent. Powder X-ray phase analysis and scanning electron microscopy revealed a rapid transformation of the cubic alpha modification into a hexagonal phase, followed by the transformation of nanoparticles into hexagonal prisms of micron sizes. The up-conversion luminescence energy yield increased as the reaction time increased.

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