Spectrally selective panel for luminescent concentrator with a photovoltaic cell

摘要

A spectrally selective panel (100) comprising: A first material that is at least partially selective for light that has a wavelength in the visible wavelength range and that is arranged to guide adequate light, the spectrally selective panel comprising a luminescent material that is arranged such that a portion of the IR light is absorbed by the luminescent material resulting in an emission of light by photoluminescence, fluorescence or phosphorescence; a diffractive element (106) that is positioned within or in the first material; a reflective film (110) that is arranged to reflect the incident light within an IR wavelength band while being broadly transmitting for at least most of the light having a wavelength within the length band visible wave; and at least one photovoltaic cell (114) that is positioned at or near the side portion of the panel (100) spectrally selective to receive light that is directed towards a side portion; wherein the diffractive element (106) is arranged to predominantly deflect light that has a wavelength in the IR wavelength band and that has a plurality of slots (110) that are at least partially filled with a material (108) within which luminescent and / or dispersion materials are incorporated, wherein the first material is arranged and the diffractive element (106) is oriented such that at least a portion of the energy associated with the incident IR light from a transverse direction of the spectrally selective panel (100) is directed towards the lateral portion of the panel.