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Enhanced UV Upconversion Emission Using Plasmonic Nanocavities

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Abstract

Strongly enhanced upconversion emission is experimentally demonstrated from an ensemble of β-NaYF4:Gd3+/Yb3+/Tm3+ @NaLuF4 core-shell nanoparticles trapped in judiciously designed plasmonic nanocavities. Using cross-shape silver nanocavities, 170-fold enhancement is obtained at UV band around 345 nm.

© 2016 Optical Society of America

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