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Resonance-shifting luminescent solar concentrators

United States Patent

September 23, 2014
View the Complete Patent at the US Patent & Trademark Office
Increasing Solar Efficiency through Luminescent Solar Concentrators
An optical system and method to overcome luminescent solar concentrator inefficiencies by resonance-shifting, in which sharply directed emission from a bi-layer cavity into a glass substrate returns to interact with the cavity off-resonance at each subsequent reflection, significantly reducing reabsorption loss en route to the edges. In one embodiment, the system comprises a luminescent solar concentrator comprising a transparent substrate, a luminescent film having a variable thickness; and a low refractive index layer disposed between the transparent substrate and the luminescent film.
Giebink; Noel Christopher (Downers Grove, IL), Wiederrecht; Gary P. (Elmhurst, IL), Wasielewski; Michael R. (Glenview, IL)
Uchicago Argonne, LLC (Chicago, IL)
13/ 199,323
August 26, 2011
STATEMENT OF GOVERNMENT INTEREST The United States Government claims certain rights in this invention pursuant to Contract No. DE-AC02-06CH11357 between the U.S. Department of Energy and UChicago Argonne, LLC, representing Argonne National Laboratory.