SWIR Video Scanning of Solar Cell Panel
SWIR video scanning over the length of a commercial 36 cell panel while forward biased with 18 V.The SWIR camera sweeps across a panel composed of 3 rows of 12 cells, with the panel nominally rated as 18 V output. Applying that same voltage to the panel caused the cells to glow at different intensity levels (this was recorded during the day in a room with drawn mini-blinds). Careful viewing of the cells shows several with defects; zooming in to the cells to the left of center reveals that one of the cells is cracked, with some of the portions dead.
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