Synthesis of NaYF4:Yb, Er up-conversion luminophore from nitrate flux

被引：1
作者：
Fedorov, P. P. [1 ]
Mayakova, M. N. [1 ]
Alexandrov, A. A. [1 ]
Voronov, V. V. [1 ]
Pominova, D., V [1 ]
Chernova, E., V [1 ]
Ivanov, V. K. [2 ]
机构：
[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow 119991, Russia
[2] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia
来源：
NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS | 2020年 / 11卷 / 04期
关键词：
sodium yttrium fluoride; fluorite crystal structure; gagarinite crystal structure; flux; sodium nitrate; MOLTEN-SALT SYNTHESIS; SIZE; NANOCRYSTALS; GROWTH; BLUE; TM; LN; LUMINESCENCE; FLUORESCENCE; MECHANISM;
D O I：
10.17586/2220-8054-2020-11-4-417-423
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 degrees 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.
引用
收藏
页码：417 / 423
页数：7
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