Abstract
In the present work large area 156.75 mm by 156.75 mm crystalline silicon passivated emitter and rear contact (PERC) solar cells are examined at the cell level and at the module level as well. 21% efficient mono crystalline PERC cells are cross sectioned and observed under microscope for local back surface field (LBSF) formation and laser contact opened regions. Quantum efficiency testing was done to see the photo current generated for different wavelengths. Finally the moduling of 72 cells were done and the IV measurements of PERC module before sun soaking and after sun soaking was done to see the effect of light induced degradation (LID) in PERC modules.
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