Efficient near-infrared quantum cutting in Tb3+,Yb3+ codoped LuPO4 phosphors
来源期刊：Journal of Rare Earths2017年第3期
论文作者：潘雨 李丽 常文轩 陈武阳 李陈 陈鹏 曾梓玉
文章页码：235 - 240
摘 要：Tb3+ and Yb3+ codoped LuPO4 phosphors were prepared by the reverse-strike co-precipitation method.The obtained LuPO4:Tb3+,Yb3+ phosphors were characterized by X-ray diffraction（XRD）,photoluminescence（PL） spectra and decay kinetics to understand the near-infrared quantum cutting（QC） phenomena.The XRD results showed that all the phosphors exhibited good crystallinity and had a pure tetragonal phase of LuPO4.The experimental results showed that the strong green emission around 545 nm from Tb3+（5D4→7F5） and near-infrared（NIR） emission at 1003 nm from Yb3+(2F5/2→2F7/2) of LuPO4:Tb3+,Yb3+phosphors were observed under 489 nm excitation,respectively.The Yb3+ concentration dependence on luminescent properties and lifetimes of both the visible and NIR emissions were also investigated.The quenching concentration of Yb3+ ions approached as high as 10 mol.%.The excellent luminescence properties of the LuPO4:Tb3+,Yb3+ indicated its potential application in improving the energy conversion efficiency of the silicon based solar cells by converting one blue photon to two NIR ones.
潘雨，李丽，常文轩，陈武阳，李陈，陈鹏，曾梓玉
College of Sciences,Chongqing University of Posts and Telecommunications
摘 要：Tb3+ and Yb3+ codoped LuPO4 phosphors were prepared by the reverse-strike co-precipitation method.The obtained LuPO4:Tb3+,Yb3+ phosphors were characterized by X-ray diffraction（XRD）,photoluminescence（PL） spectra and decay kinetics to understand the near-infrared quantum cutting（QC） phenomena.The XRD results showed that all the phosphors exhibited good crystallinity and had a pure tetragonal phase of LuPO4.The experimental results showed that the strong green emission around 545 nm from Tb3+（5D4→7F5） and near-infrared（NIR） emission at 1003 nm from Yb3+(2F5/2→2F7/2) of LuPO4:Tb3+,Yb3+phosphors were observed under 489 nm excitation,respectively.The Yb3+ concentration dependence on luminescent properties and lifetimes of both the visible and NIR emissions were also investigated.The quenching concentration of Yb3+ ions approached as high as 10 mol.%.The excellent luminescence properties of the LuPO4:Tb3+,Yb3+ indicated its potential application in improving the energy conversion efficiency of the silicon based solar cells by converting one blue photon to two NIR ones.
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