【摘 要】
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The near-infrared (NIR) quantum cutting(QC) phosphors of Yb3+ doped CaMoO4(CM) with charge compensation were synthesized by sol-gel methods.Two approaches t
【机 构】
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Department of Physics,University of Science and Technology of China,Hefei,Anhui,230026,China
【出 处】
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第12届全国发光学学术会议暨发光学相关产业研讨会
论文部分内容阅读
The near-infrared (NIR) quantum cutting(QC) phosphors of Yb3+ doped CaMoO4(CM) with charge compensation were synthesized by sol-gel methods.Two approaches to charge compensation, (a)2Ca2+→Yb3++ M+, where M+ is a monovalent cation like Li+, Na+ and K+ acting as a charge compensator; (b) 3Ca2+→2Yb3++ vacancy, have been studied in detail.In comparison with the phosphors without charge compensation, appropriate charge compensated phosphors show remarkable increase of the NIR emission around 1000nm.Upon the radiation of UV phonon, the visible emission due to the molybdates are much weaker than that of the phosphors without charge compensation, whereas the NIR emission of Yb3+ ions are greatly enhanced, implying more efficient energy transfer (ET) from the host to Yb3+ ions.
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