期刊
MATERIALS RESEARCH BULLETIN
卷 44, 期 9, 页码 1863-1866出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2009.05.013
关键词
Optical materials; Chemical synthesis; Luminescence
资金
- Jiangxi University of Science and Technology
- Ganzhou City public services platform for technical innovation of nonferrous metal [PT08006]
Tb3+-doped SrWO4 phosphors with a scheelite structure have been prepared by hydrothermal reaction. X-ray powder diffraction, field-emission scanning electron microscopy, photoluminescence excitation and emission spectra and decay curve were used to characterize the resulting samples. Scanning electron microscopy image showed that the obtained SrWO4:Tb3+ phosphors appeared to be nearly spherical and their sizes ranged from 1 to 3 mu m. Photoluminescence spectra indicated the phosphors emitted strong green light centered at 545 nm under ultraviolet light excitation. Because 12 at.% SWO4:Tb3+ phosphor exhibits intensive green emission under 254 nm excitation in comparison with the commercial green fluorescent lamp phosphor (LaPO4:Ce,Tb), the excellent luminescence properties make it a new promising green phosphor for fluorescent lamps application. (C) 2009 Elsevier Ltd. All rights reserved.
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