Wafer Integrated Micro-scale Concentrating Photovoltaics

TitleWafer Integrated Micro-scale Concentrating Photovoltaics
Publication TypeBook Chapter
Year of Publication2017
AuthorsGu, T, Li, D, Li, L, Jared, B, Keeler, G, Miller, B, Sweatt, W, Paap, S, Saavedra, M, Das, U, Hegedus, S, Tauke-Pedretti, A, Hu, J
EditorSiefer, G, Hinzer, K, ReyStolle, I
Book Title13th International Conference on Concentrator Photovoltaic Systems (cpv-13)
PaginationUNSP - 080004-1
PublisherAmer Inst Physics
ISBN Number978-0-7354-1561-4

Recent development of a novel micro-scale PV/CPV technology is presented. The Wafer Integrated Micro-scale PV approach (WPV) seamlessly integrates multijunction micro-cells with a multi-functional silicon platform that provides optical micro-concentration, hybrid photovoltaic, and mechanical micro-assembly. The wafer-embedded micro-concentrating elements is shown to considerably improve the concentration-acceptance-angle product, potentially leading to dramatically reduced module materials and fabrication costs, sufficient angular tolerance for low-cost trackers, and an ultra-compact optical architecture, which makes the WPV module compatible with commercial flat panel infrastructures. The PV/CPV hybrid architecture further allows the collection of both direct and diffuse sunlight, thus extending the geographic and market domains for cost-effective PV system deployment. The WPV approach can potentially benefits from both the high performance of multijunction cells and the low cost of flat plate Si PV systems.