Observation of Considerable Upconversion Enhancement Induced by Cu2–xS Plasmon Nanoparticles
作者： Donglei Zhou , Dali Liu , Wen Xu , Ze Yin , Xu Chen
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摘要: Localized surface plasmon resonances (LSPRs) are achieved in heavily doped semiconductor nanoparticles (NPs) with appreciable free carrier concentrations. In this paper, we present the photonic, electric, and photoelectric properties of plasmonic Cu2–x S NPs/films and the utilization of LSPRs generated from semiconductor NPs as near-infrared antennas to enhance the upconversion luminescence (UCL) of NaYF4: Yb3+, Er3+ NPs. Our results suggest that the LSPRs in Cu2–x S NPs originate from ligand-confined carriers and …
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