Calcination-assisted hydrothermal crystallization and comparative up-/down-conversion luminescence of RE3+ (RE=Ho, Er and Tm)-doped YbNbO4 and Yb3NbO7

被引：0
|
作者：
Yuan, Bingxin [1 ]
Li, Meiting [1 ]
Zhang, Chi [1 ]
机构：
[1] Liaoning Univ Technol, Sch Mat Sci & Engn, Jinzhou 121001, Liaoning, Peoples R China
来源：
MATERIALS TODAY COMMUNICATIONS | 2024年 / 41卷
关键词：
RE(3+)doped YbNbO4 and Yb3NbO7 (RE=Ho; Er and Tm); Lower symmetry; Yb3+-> RE3+ forward/backward energy transfer; Cross relaxation; TUNABLE LUMINESCENCE; ENERGY-TRANSFER; NANOPHOSPHORS; NANOPARTICLES; FLUORESCENCE; IONS; YB3+;
D O I：
10.1016/j.mtcomm.2024.110860
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The RE3+ doped YbNbO4 and Yb3NbO7 nanophosphors (RE=Ho, Er and Tm) were synthesized via a calcination assisted hydrothermal procedure. YbNbO4 intensified almost the whole up-conversion (UC)/down-conversion (DC) emissions of RE3+ by similar to 2 times when compared with Yb3NbO7 components, indicating that a lower symmetry environment in the former case is more favorable for photoluminescence. UC luminescence in each case was dominated by a green band at similar to 539 nm for Ho3+ and a NIR band at similar to 803 nm for Tm3+, while doping YbNbO4 and Yb3NbO7 with Er3+ separately yielded the slightly stronger green 556 nm and red 658 nm emissions. The UC/DC luminescence mechanisms were elaborated via Yb3+ -> RE3+ forward/backward energy transfer and cross relaxation.
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