Improvement of self‐activated luminescence from introduced cation disorder in Sr6V2O11

Adjusting the elemental composition of a host is regarded to be an effective strategy to tune its luminescent properties such as peak energy, emission efficiency, and bandwidth. In this work, the cation substitution of (Ba2+ → Sr2+) in self‐activated Sr6V2O11 was conducted to investigate the lumines...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2018-07, Vol.101 (7), p.2987-2995
Main Authors: Mi, Longqing, Huang, Yanlin, Liu, Xuanxuan, Qin, Lin, Seo, Hyo Jin
Format: Article
Language:English
Subjects:
cation substitutions
Cations
Chemical synthesis
Energy measurement
Luminescence
optical materials
Optical properties
Phosphors
Sol-gel processes
Substitutes
vanadium compounds
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Summary:Adjusting the elemental composition of a host is regarded to be an effective strategy to tune its luminescent properties such as peak energy, emission efficiency, and bandwidth. In this work, the cation substitution of (Ba2+ → Sr2+) in self‐activated Sr6V2O11 was conducted to investigate the luminescence modification. All the phosphors of Sr6‐6xBa6xV2O11 (x = 0, 0.1, 0.2, 0.3, 0.4, 0.5) were synthesized by the traditional chemical sol‐gel method. The morphological properties were measured through scanning electron microscope and energy dispersive spectrum measurements. The cation substitution brings out the disorder in the structure, which exerts modifications on the luminescence properties of Sr6V2O11. The luminescence intensity and corresponding decay lifetime were enhanced with the cation disorder in the self‐activated phosphor. Cation disorder in a phosphor lattice could be one of the effective approaches to improve the luminescence efficiency.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.15448