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Making the Invisible, Visible: Upconversion via Capped Er-doped NaGdF4 Nanoparticles for Harvesting Sub Bandgap Photons

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Abstract

Upconversion core/shell nanoparticles are prepared for harvesting near infra-red radiation. Power dependent enhancement, due to shell passivation, of photoluminescence is between a factor of 13-38 (green emission) and 160-176 (red emission).

© 2013 Optical Society of America

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