Journal
OPTIK
Volume 224, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2020.165537
Keywords
Hydrothermal synthesis route; Phosphor; Bi4Ti3O12; n-n type; Heterojunction
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Funding
- NPL, CAEP [2019DB02]
- Talent Introduction Project of Chongqing Three Gorges University [09924601]
- Major Cultivation Projects of Chongqing Three Gorges University [18ZDPY01]
- Research Project of Higher Education Teaching Reform of Chongqing Three Gorges University [JGZC1903]
- Chongqing Natural Science Foundation [cstc2019jcyj-msxmX0310, cstc2018jcyjAX0599]
- Science and Technology Research Program of Chongqing Education Commission of China [KJQN201901, KJZD-K202001202]
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A simple hydrothermal synthesis route was employed to construct n-n type double heterojunction Bi2S3/Bi4Ti3O12/Bi2MoO6 phosphors with enhanced photoluminescence properties. Structural analysis shows that the Bi2S3/Bi4Ti3O12/Bi2MoO6 phosphors contained no other impurities. Microstructural analysis showed that fine particles of Bi2S3 and Bi2MoO6 were interlaced with large Bi4Ti3O12 nanosheets. The color property analysis showed that the color of Bi2S3/Bi4Ti3O12/Bi2MoO6 phosphors was dark gray. The obtained n-n type double heterojunction Bi2S3/Bi4Ti3O12/Bi2MoO6 phosphors exhibited significantly enhanced emission intensity at 470 nm and narrower peak width compared with Bi4Ti3O12 and Bi2S3/Bi4Ti3O12 composites due to the high recombination rate of electron hole pairs. The analysis of band arrangement theory shows that the double I-type band arrangement structure is beneficial to enhance the photoluminescence property of the system.
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