Tb/Yb 共掺 NaLuF 单晶体中的近红外下转换和能量转移机制。
NIR Downconversion and Energy Transfer Mechanisms in Tb/Yb Codoped NaLuF Single Crystals.
机构信息
Key Laboratory of Photo-electronic Materials , Ningbo University , Ningbo , Zhejiang 315211 , China.
School of Physics and Astronomy , Queen Mary University of London , London E1 4NS , United Kingdom.
出版信息
Inorg Chem. 2018 Jul 2;57(13):7792-7796. doi: 10.1021/acs.inorgchem.8b00867. Epub 2018 Jun 13.
Tb/Yb codoped NaLuF single crystals with near-infrared (NIR) emission are achieved by an improved Bridgman approach. Energy transfer from Tb to Yb ions is affirmed by the photoluminescence (PL) emission spectra and decay curves characterization. On the basis of the analysis of energy transfer rate dependence on the Yb concentration, the interaction between Tb and Yb ions in NaLuF single crystals is confirmed through the one-to-one energy transfer process. Results demonstrate that the prepared NaLuF single crystals might be promising candidates to convert sunlight to improve the performance of the silicon solar cells.
采用改进的布里奇曼法制备了近红外（NIR）发射的 Tb/Yb 共掺杂 NaLuF 单晶。通过光致发光（PL）发射光谱和衰减曲线的表征证实了 Tb 离子到 Yb 离子的能量转移。基于对能量转移速率对 Yb 浓度的依赖性的分析，通过单分子能量转移过程确认了 NaLuF 单晶中 Tb 和 Yb 离子之间的相互作用。结果表明，所制备的 NaLuF 单晶可能是将太阳光转化为提高硅太阳能电池性能的有前途的候选材料。
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