Yb3+ site occupation and host sensitization luminescence of a novel near‐infrared emitting Sr2CaMoO6:Yb3+ phosphor
Yb3+ site occupation and host sensitization luminescence of a novel near‐infrared emitting Sr2CaMoO6:Yb3+ phosphor
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DOI：
10.1002/pssr.201308278
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发表时间：
2014-02
期刊：
影响因子：
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通讯作者：
Enyang Wang;Wenli Zhou;Chunmeng Liu;Jing Wang;Xiao-yan Kuang;Yanmei Ye;Jinke Tang;Q. Su
中科院分区：
文献类型：
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作者：
Enyang Wang;Wenli Zhou;Chunmeng Liu;Jing Wang;Xiao-yan Kuang;Yanmei Ye;Jinke Tang;Q. Su
采用固相反应法制备了宿主敏化近红外发光材料Sr2CaMoO6:Yb3+。结构精细化和拉曼光谱表明，Yb3+离子优先占据Ca2+位点。该荧光粉可以捕获紫外（UV）蓝色光子，并在1012 nm左右表现出强烈的近红外发射，全宽半宽最大值为1635 cm-1。此外，估计绝对近红外光致发光量子产率（PLQY）约为9%。Sr2CaMoO6:Yb3+荧光粉可能是一种有前途的发光降移材料，可以改善太阳能电池在紫外区的光谱响应。（©2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim）
The host sensitized near‐infrared (NIR) emitting phosphor Sr2CaMoO6:Yb3+ was fabricated by the solid state reaction method. The structural refinement and Raman spectra elucidate that Yb3+ ions preferentially occupy Ca2+ sites. The phosphor can harvest ultraviolet (UV)–blue photons and exhibits intense NIR emission at around 1012 nm with full‐width‐at‐half‐maximum of 1635 cm–1. Moreover, the absolute NIR photoluminesence quantum yield (PLQY) is estimated to be about 9%. The Sr2CaMoO6:Yb3+ phosphor may be a promising luminescence downshifting material for improving the spectral response of solar cells in the UV region. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)