期刊
JOURNAL OF RARE EARTHS
卷 27, 期 2, 页码 323-326出版社
ELSEVIER
DOI: 10.1016/S1002-0721(08)60243-4
关键词
Sr2SiO4:Eu2+; white light-emitting diodes (LED); rare earths
资金
- Natural Science Foundation of Zhejiang Province [Y406309]
- Research Program from Science and Technology Bureau of Jinhua City [2008-1-151]
Eu2+ and (or) Eu3+ doped Sr2SiO4 phosphors particles were synthesized by a conventional solid-state reaction technique, and their structural and optical properties were investigated. The X-ray diffraction (XRD) results showed that the obtained phosphors were composed of orthorhombic alpha'-Sr2SiO4 and monoclinic beta-Sr2SiO4 phase. When excited under 256 nm, Sr2SiO4:Eu3+ phosphors showed intense emission in the red region. Sr2SiO4:Eu3+ phosphors exhibited white emissions (x=0.30, y=0.40, T-C-6500 K) ranging from 425 to 650 nm when it was excited by near-ultraviolet (near-UV) light, indicating that Sr2SiO4:Eu2+ was a good light-conversion phosphor candidate for near-UV chip.
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