Journal
CERAMICS INTERNATIONAL
Volume 39, Issue 1, Pages 857-860Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2012.05.106
Keywords
Powder: solid state reaction; Optical Properties; Phosphors
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Funding
- National Nature Science Foundation of China [51072190, 61166007]
- Fund of State Key Laboratory of Crystal Materials [KF1007]
- Zhejiang Province Science and Technology Program [2009C21020]
- Yunnan Province Science and Technology Program [2010CD095, 2009ZC137M]
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A Sr3-xAl2O6:xBi(3+) phosphor crystallized in space group Pa (3) over bar was prepared by high-temperature solid-state reaction. Two emission bands (lambda(em) = 440 nm and 400 nm) and two excitation bands (lambda(ex) = 330 nm and 295 nm) were observed, which can be attributed to Bi3+ in distinct crystallographic sites. The optimal intensity of 400 nm emission band was observed for the phosphor doped with 1 at% Bi3+ (x=0.01), while that of 440 nm emission band was found in the phosphor with 2 at% Bi3+ (x=0.02). The emission color varies from the greenish blue to blue and even violet blue as the excitation wavelength increases from 275 to 335 nm. The Sr3-xAl2O6:xBi(3+) is a potential blue phosphor for ultraviolet light-emitting diodes. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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