PLECTRA · Plasmon Coupled Luminescent Solar Concentrators and their Application in Self-Supplied Electrochromic Windows

Plasmon Coupled Luminescent Solar Concentrators and their Application in Self-Supplied Electrochromic Windows

Luminescent solar concentrators (LSCs) present an innovative approach to constructing integrated photovoltaic systems, capable of capturing both direct and indirect sunlight through photoluminescence and channeling it into high-efficiency solar cells. The primary challenge hindering their commercial adoption is their low efficiency, attributed to the limited light absorption by the LSC's active materials and the inadequate harnessing of the solar spectrum's full range. Our work explores the enhancement of light absorption within LSCs by incorporating particles that scatter light, varying in size and shape. This method not only increase the optical pathlength within the concentrators, leading to better absorption but also broadens the spectrum of light directed towards the solar cells, thereby elevating their efficiency. Furthermore, we have examined how these concentrators scatter light at various angles and the consequent effects on the system's overall power conversion efficiency. The implications of our research are twofold, offering both foundational insights and practical applications. The particle scattering behavior we've analyzed can improve the performance of LSCs and has potential applications in other fields, such as in the development of sunscreens and solar cells. This study is vital for advancing our utilization of renewable energy sources like solar light, emphasizing the importance of maximizing solar energy capture. The LSC technology and scattering particles we've focused on are non-toxicity, cost-effectiveness, and versatility in color. Moreover, their application extends beyond buildings to greenhouses, where they can generate electricity and modify the light spectrum to enhance plant growth. Our research aims to deepen the understanding of how light interaction with scattering particles can boost both the optical absorption of the LSCs, and, power conversion efficiencies of solar cells. This knowledge could guide the selection of particle sizes and shapes that optimize LSC applications, contributing to the broader goal of improving renewable energy technologies.

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