Synthesis of NaYF4:Yb, Er up-conversion luminophore from nitrate flux
https://doi.org/10.17586/2220-8054-2020-11-4-417-423
Abstract
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.
Keywords
sodium yttrium fluoride,
fluorite crystal structure,
gagarinite crystal structure,
flux,
sodium nitrate
Supporting agencies: The work was preformed under the RFBR grant 18-29-12050mk. The authors are grateful to Dr. A.E. Baranchikov for his assistance in conducting research and to Dr. S.V. Kuznetsov for helpful discussions. All experiments were performed on the equipment kindly provided by the Centre for Collective Use of Prokhorov General Physics Institute of the Russian Academy of Sciences and the Centre for Collective Use of Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences.
About the Authors
P. P. Fedorov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
M. N. Mayakova
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
A. A. Alexandrov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
V. V. Voronov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
D. V. Pominova
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
E. V. Chernov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
V. K. Ivanov
Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
119991, Moscow
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Review
For citations:
Fedorov P.P., Mayakova M.N., Alexandrov A.A., Voronov V.V., Pominova D.V., Chernov E.V., Ivanov V.K. Synthesis of NaYF4:Yb, Er up-conversion luminophore from nitrate flux. Nanosystems: Physics, Chemistry, Mathematics. 2020;11(4):417–423. https://doi.org/10.17586/2220-8054-2020-11-4-417-423
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