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Optical transition and luminescence properties of Sm 3+ ‐doped YNbO 4 powder phosphors
Author(s) -
Wang Xin,
Li Xiangping,
Shen Rensheng,
Xu Sai,
Zhang Xizhen,
Cheng Lihong,
Sun Jiashi,
Zhang Jinsu,
Chen Baojiu
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16717
Subject(s) - luminescence , phosphor , analytical chemistry (journal) , powder diffraction , arrhenius equation , doping , materials science , quenching (fluorescence) , photoluminescence , thermal stability , fluorescence , activation energy , chemistry , crystallography , optics , physics , optoelectronics , organic chemistry , chromatography
A series of YNbO 4 : Sm 3+ powder phosphors with different doping concentrations were synthesized by a traditional high‐temperature solid‐state reaction method. The crystal structure of the obtained samples was characterized by means of X‐ray diffraction. Concentration quenching, energy‐transfer mechanism, and luminescence thermal stability of YNbO 4 : Sm 3+ samples were studied through the fluorescence spectra and decays. It was concluded that electric dipole‐dipole interaction was the dominant energy‐transfer mechanism between Sm 3+ ions according to both Van Uitert's model and Dexter's model. Using the Arrhenius model, crossover process was proven to be responsible for the luminescence thermal quenching of Sm 3+ . Moreover, a novel approach for evaluating the optical transition properties of Sm 3+ ion in YNbO 4 powders using the diffuse‐diffraction spectrum and fluorescence decay was examined in the framework of Judd‐Ofelt (J‐O) theory. It was confirmed that the J‐O parameters Ω λ ( λ = 2, 4, 6) of Sm 3+ in YNbO 4 powder were reliable by comparing the radiation transition rate with the measured emission results.