A type of solar concentrator for photovoltaics utilizing light pipe trapping of luminescence is described. Total collector efficiencies of 3. 2% have been measured, and efficiencies of 10% appear theoretically possible. The photodegradation lifetime of the dyes presently used is about one year under optimal conditions.
J. S. Batchelder,
A. H. Zewail,
"Luminescent Solar Concentrators", Proc. SPIE 0248, Role of Electro-Optics in Photovoltaic Energy Conversion, (25 November 1980); doi: 10.1117/12.970592; https://doi.org/10.1117/12.970592