Higher reflectance of the rear-side dielectric stack, at the wavelength of the laser source used for ablation, reduces laser-induced damage and improves the open-circuit voltage of PERC silicon solar cells. The understanding of this correlation increases the working window of cost-effective nanosecond laser ablation of the rear-side dielectric for higher-efficiency industrial PERC-like solar cells.
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http://dx.doi.org/10.1364/OE.27.00A758 | DOI Listing |
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