【摘 要】
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Upconversion of infrared radiation into visible region has been investigated for applications biological area.However,low conversion efficiency NaYF4:Yb,Er nanoparticles have prevented application of
【机 构】
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StateKey Laboratory of Luminescence and Applications,Changchun Institute of Optics,Fine Mechanics an
【出 处】
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首届国际微纳米体系发光及光电性质学术会议
论文部分内容阅读
Upconversion of infrared radiation into visible region has been investigated for applications biological area.However,low conversion efficiency NaYF4:Yb,Er nanoparticles have prevented application of upconversion photoluminescence(UPL)for bioapplications.Recently,the coupling of UC nanocrystals with metal nanoparticles(NPs)has been developed as a valuable strategy to enhance their luminescence.Herein,Silver nanoprisms were deployed as an internal plasmonic antenna to couple the emission of NaYF4:Yb,Er nanoparticles to the surface plasmon resonance(SPR)of the silver nanoprisms for enhanced photoluminescence.Enhancement factor for upconversion was greater than a factor of 3.This strong plasmonic enhancement effect on energy transfer can have important implications for other fluorescent too.
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