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A key pathway to meeting the Department of Energy SunShot 2020 goals is to reduce financing costs by improving investor confidence through improved photovoltaic (PV) module reliability. A comprehensive approach to further understand and improve PV reliability includes characterization techniques and modeling from module to atomic scale. Imaging techniques, which include photoluminescence, electroluminescence,...
We report on light-induced degradation (LID) of multicrystalline solar cells made of upgraded metallurgical-grade (UMG) silicon. Cells made of wafers from various locations in an UMG ingot were subjected to LID study. We investigated the kinetics of the LID by measuring changes in the solar cell performance parameters with illumination time and under various illumination intensities; the LID occurred...
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