Concentrator Optics for Photovoltaic Systems

Cost-effective solar concentrators based on red fluorescent Zn(ii)–salicylaldiminato complex

“…3,5 Solar power fields with passive concentrators made of parabolic mirrors and Fresnel lenses are already a reality since they take a large area of sunlight and direct it toward a specific spot by bending the rays of light and focusing them. 6 It has the advantages of working for all wavelengths, since it depends on reflection rather than refraction, and of not requiring any extreme materials properties. 7 While capable of achieving extremely high concentrations (several hundred suns), 8 the current technology suffers of some practical limitations: size limit (it is very long compared to its diameter), dependence on sunlight incidence angle, needs of large and heavy sun tracking systems and cooling apparatuses 9,10 These features have hindered the deployment of such technology in urban environments and, in the past decades, active luminescent solar concentrators (LSCs) have been proposed as a viable and convenient alternative to classic geometric concentrators.…”