volume 6, issue 62, P56963-56970 2016
DOI: 10.1039/c6ra09580a
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Abstract: Rare earth ions doped upconversion nanoparticles have broad applications ranging from biological imaging to solar energy conversion. However, the application of upconversion nanoparticles was limited due to their low upconversion efficiencies. In the paper, two kinds of Au films with tunable and broad surface plasmonic absorptions were used to enhance the upconversion emission of NaYF 4 : Yb 3+ , Er 3+ nanoparticles, respectively. The results demonstrated that the upconversion enhancement is highly dependent …

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