UV-Vis-NIR luminescence properties and energy transfer mechanism of LiSrPO4:Eu2+, Pr3+ suitable for solar spectral convertor
UV-Vis-NIR luminescence properties and energy transfer mechanism of LiSrPO4:Eu2+, Pr3+ suitable for solar spectral convertor
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适用于太阳光谱转换器的LiSrPO4:Eu2、Pr3的UV-Vis-NIR发光特性及能量传递机制
DOI：
10.1364/oe.21.003161
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发表时间：
2013-02-11
期刊：
影响因子：
3.8
通讯作者：
Su, Qiang
中科院分区：
文献类型：
--
作者：
Chen, Yan;Wang, Jing;Su, Qiang
采用固相反应法合成了一种高效的近红外（NIR）荧光粉LiSrPO 4：Eu 2+，Pr 3+，并对其进行了X射线衍射、漫反射光谱、室温和3 K下的光致发光光谱和衰减曲线的研究。在此基础上提出了紫外-可见-近红外能量传递机理。结果表明，Eu 2+可以是一种有效的敏化剂，用于捕获紫外光子，并通过高振子强度的Eu 2+的4f-5d吸收的有效能量馈送，大大增强Pr 3+在960和1060 nm之间的近红外发射。Eu ~（2+）/Pr ~（3+）可能是一种有效的太阳光谱转换剂。(C)2013年美国光学学会
An efficient near-infrared (NIR) phosphor LiSrPO4:Eu2+, Pr3+ is synthesized by solid-state reaction and systematically investigated using x-ray diffraction, diffuse reflection spectrum, photoluminescence spectra at room temperature and 3 K, and the decay curves. The UV-Vis-NIR energy transfer mechanism is proposed based on these results. The results demonstrate Eu2+ can be an efficient sensitizer for harvesting UV photon and greatly enhancing the NIR emission of Pr3+ between 960 and 1060 nm through efficient energy feeding by allowed 4f-5d absorption of Eu2+ with high oscillator strength. Eu2+/Pr3+ may be an efficient donor-acceptor pair as solar spectral converter for Si solar cells. (C) 2013 Optical Society of America