期刊
OPTICS EXPRESS
卷 20, 期 19, 页码 21656-21664出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.021656
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资金
- National Science Foundation for Distinguished Young Scholars [50925206]
Y3Al5O12:0.06Ce(3+), xMn(2+) (YAG:0.06Ce, xMn) phosphors have been synthesized and the effect of different charge compensators on the color adjustment has been investigated for the first time. The luminescence properties of Mn2+ singly doped and co-doped with Ce3+ into YAG host have been discussed. It is observed that in singly doped sample, Mn2+ ions not only occupy two kinds of Al3+ sites to generate a yellow and a deep red emission bands, but also occupy Y3+ sites to obtain a green emission band in YAG host. Considering Mn2+ substitution for Al3+, quadrivalence ions including Zr4+, Ge4+ and Si4+ ions are introduced to balance the charge difference. The results show that Si4+ as charge compensator exhibits the best tunable effect on controlling the Mn2+ emissions in YAG:0.06Ce, xMn. In Si4+-Mn2+ co-doped samples, the emission color can be tuned from greenish-yellow to red with increasing the content of Mn2+. The Commission International de L'Eclairage (CIE) chromaticity coordinates are also investigated. (C) 2012 Optical Society of America
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