Luminescent solar concentrator

摘要

A stacked luminescent solar concentrator includes two separate absorption/emission cells, each having a layer of luminophore-type material, wherein a top layer is a high band gap layer comprised of quantum dots in polymer, wherein the quantum dots are engineered so as to absorb a significant percentage of photons above bandgap. The bottom layer is a lower band gap layer comprised of quantum dots in polymer, wherein the quantum dots in the second layer are engineered so as to absorb photons not absorbed in the top layer, thus increasing total percentage of absorbed photons. Photovoltaic cells are located below the layers at the bottom of the cells or at the edges of the cells. The sides and lower surfaces of the cells may include reflective surfaces as discussed further herein. Reflection losses from the top surface thereof may be minimized using a broadband anti-reflective coating (AR) on the surface.

主权项

1. A luminescent solar collector system comprising:
a first surface for receiving solar radiation; a first film layer for absorbing a first wavelength range of the received solar radiation and emitting a first amount of luminescent photons in proportion thereto, the first film layer including:
(a) a first polymer base including a copolymer of hafnium carboxyethyl acrylate (HCA) and at least a second compound; and(b) first quantum dots; a second surface located opposite the first surface, wherein a top face of the second surface faces the first film layer and a bottom face of the second surface includes at least one first photovoltaic cell included thereon; and a first reflective surface located between the first and second surfaces for directing at least a portion of the first amount of luminescent photons to the at least one first photovoltaic cell.