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Advantages of using dpss nanosecond laser with a gaussian beam shape for scribing thin film photovoltaic panels

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Advantages of using dpss nanosecond laser with a gaussian beam shape for scribing thin film photovoltaic panels

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  • Author: Ashwini Tamhankar, James Bovatsek, Gonzalo Guadano, Rajesh Patel
Two different experiments were conducted to characterize effect of laser beam shape (Gaussian Vs flattop) and laser beam quality (high Vs low M2 ) on process depth of focus. Electrically isolating scribes were machined in Molybdenum and SnO2 thin films deposited on a glass substrate at various defocus positions. Scribes quality and electrical resistance were characterized to determine acceptable process depth of focus.

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