Compact and High Efficiency Micro-CPV Module with High Wafer Utilization Rate

Compact and high efficiency micro-CPV module with high wafer utilization rate Corentin Jouanneau1,2, Thomas Bidaud1,2, Maxime Darnon1,2, Gwenaelle Hamon1,2 1Institut Interdisciplinaire d'innovation Technologique (3iT), Sherbrooke, Québec, J1K0A5, Canada 2Laboratoire Nanotechnologies Nanosystèmes (LN2) - CNRS IRL-3463, Institut Interdisciplinaire d'Innovation Technologique(3iT), Sherbrooke, Québec, J1K 0A5, Canada Micro-CPV (μ-CPV) modules promise to overcome the limitations of CPV such as compactness. Miniaturization involves new challenges for micro-fabrication, packaging, and optics. In this paper, we fabricate sub-millimetric solar cells with high performances and low kerf losses (< 10%). A new interconnection method for these cells is also presented allowing to reduce the shading of the cells by 10 compared to the wire bondable cell. We propose the design of a 350× one-stage optics to fabricate modules with manufacturing tolerances on cell misalignment reaching ±50 μm.