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Energy Sciences

Lawrence Berkeley National Laboratory

Tailoring dye-sensitized upconversion nanoparticle excitation bands towards excitation wavelength selective imaging

Published Web Location

https://doi.org/10.1039/c5nr05437k
Abstract

One of the key roadblocks in UCNP development is its extremely limited choices of excitation wavelengths. We report a generic design to program UCNPs to possess highly tunable dye characteristic excitation bands. Using such distinctive properties, we were able to develop a new excitation wavelength selective security imaging. This work unleashed the greater freedom of the excitation wavelengths of the upconversion nanoparticles and we believe it is a game-changer in the field and this method will enable numerous applications that are currently limited by existing UCNPs.

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