High-efficiency solar energy conversion with spectrum splitting prismatic lens (and other configurations)

Harry Apostoleris; Carlo Maragliano; Matteo Chiesa; Marco Stefancich

doi:10.1117/12.2237711

23 September 2016 High-efficiency solar energy conversion with spectrum splitting prismatic lens (and other configurations)

Harry Apostoleris, Carlo Maragliano, Matteo Chiesa, Marco Stefancich

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Proceedings Volume 9937, Next Generation Technologies for Solar Energy Conversion VII; 993705 (2016) https://doi.org/10.1117/12.2237711
Event: SPIE Optics + Photonics for Sustainable Energy, 2016, San Diego, California, United States

Abstract

Optical spectrum splitting systems that divide light between independent solar cells of different band gaps have received increasing attention in recent years as an alternative to expensive multijunction cells for high-efficiency PV. Most research, however, has focused on dichroic filters and other photonic structures that are expensive to manufacture. This has the effect of transferring the cost of the system from the PV cells to the optics. As a low-cost spectrum splitting approach we designed a prismatic lens that simultaneously splits and concentrates light and can be fabricated by injection molding. We present experimental results of a two-cell demonstration system, and calculations for low-cost configurations of commercial solar cells, enabled by the removal of lattice-matching requirements.

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Harry Apostoleris, Carlo Maragliano, Matteo Chiesa, and Marco Stefancich "High-efficiency solar energy conversion with spectrum splitting prismatic lens (and other configurations)", Proc. SPIE 9937, Next Generation Technologies for Solar Energy Conversion VII, 993705 (23 September 2016); https://doi.org/10.1117/12.2237711

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KEYWORDS

Solar cells

Silicon

Optics manufacturing

Solar energy

Optical filters

Receivers

External quantum efficiency

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