Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes
	Li, Yezhou 1; Wang ZF(王赵峰)2 ; Sun, Luyi 3,4; Wang, Zhilong 1; Wang, Shiqin 1; Liu, Xiong 1; Wang, Yuhua 5
刊名	Materials Research Bulletin
	2014
卷号	50 页码:36-41
关键词	Optical materials Defects Luminescence
ISSN号	0025-5408
通讯作者	王赵峰 ; Wang, Yuhua
英文摘要	Calcium tungstate (CaWO₄) nanophosphors with the particle sizes from 35 to 90 nm were synthesized by a hydrothermal process through exactly controlling the pre-treated conditions. The influence of particle size on oxygen vacancy and photoluminescence properties in CaWO₄ nanophosphors was investigated and discussed. The crystal structure of the CaWO₄ nanophosphors presented a certain level of distortion due to the high concentration of oxygen vacancy. Under 350 nm excitation, a clear green emission aroused by oxygen vacancy was observed. The possible luminescence processes for the matrix and oxygen vacancy were proposed. The luminescence spectra of the nanophosphors revealed that the emission and absorption intensity aroused by oxygen vacancy were both enhanced when the size is decreased. On the basis of the above results, the essential relationship between particle size and oxygen vacancy in CaWO₄ nanophosphors was concluded that the concentration of oxygen vacancy could be increased by reducing its size, which was further confirmed by decay lifetimes.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (No. 51205385);the National Science Foundation (Partnerships for Research and Education in Materials, DMR-1205670);the Air Force Offive of Scientific Research (No. FA9550-12-1-0159);the American Chemical Society Petroleum Research Fund (No. 51833-UN17)
语种	英语
WOS记录号	WOS:000331920500008
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/20285]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Gansu Univ Tradit Chinese Med, Dept Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 3.Univ Connecticut, Inst Mat Sci, Dept Chem & Biomol Engn, Storrs, CT 06269 USA 4.Univ Connecticut, Inst Mat Sci, Polymer Program, Storrs, CT 06269 USA 5.Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li, Yezhou,Wang ZF,Sun, Luyi,et al. Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes[J]. Materials Research Bulletin,2014,50:36-41.
APA	Li, Yezhou.,Wang ZF.,Sun, Luyi.,Wang, Zhilong.,Wang, Shiqin.,...&Wang, Yuhua.(2014).Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes.Materials Research Bulletin,50,36-41.
MLA	Li, Yezhou,et al."Investigation of oxygen vacancy and photoluminescence in calcium tungstate nanophosphors with different particle sizes".Materials Research Bulletin 50(2014):36-41.