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Spectral Leverage: Enhancing the Photoluminescent Quantum Yield of Upconversion via Broadband Excitation

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Abstract

Upconversion is a promising concept for lowering transmission losses and overcoming the Shockley-Queisser limit, however efficiencies remain low under monochromatic characterisation. Broadband illumination, similar to the sun, not only enhances this process but is inherent to its application.

© 2012 Optical Society of America

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