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Improvement of self‐activated luminescence from introduced cation disorder in Sr 6 V 2 O 11
Author(s) -
Mi Longqing,
Huang Yanlin,
Liu Xuanxuan,
Qin Lin,
Seo Hyo Jin
Publication year - 2018
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.15448
Subject(s) - luminescence , phosphor , scanning electron microscope , persistent luminescence , materials science , analytical chemistry (journal) , chemistry , optoelectronics , thermoluminescence , chromatography , composite material
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 (Ba 2+ → Sr 2+ ) in self‐activated Sr 6 V 2 O 11 was conducted to investigate the luminescence modification. All the phosphors of Sr 6‐6 x Ba 6 x V 2 O 11 ( 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 Sr 6 V 2 O 11 . 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.