UV-Vis-NIR luminescence properties and energy transfer mechanism of LiSrPO4:Eu2+, Pr3+ suitable for solar spectral convertor.

作者: Yan Chen , Jing Wang , Chunmeng Liu , Jinke Tang , Xiaojun Kuang

DOI: 10.1364/OE.21.003161

关键词:

摘要: 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 3 K, the decay curves. The UV-Vis-NIR energy transfer mechanism proposed based on these results. results demonstrate Eu2+ can be an sensitizer for harvesting UV photon greatly enhancing NIR emission of between 960 1060 nm through feeding allowed 4f-5d absorption with high oscillator strength. Eu2+/Pr3+ may donor-acceptor pair as solar spectral converter Si cells.

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