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Thin film solar cells processing

Laser Scribing Process Technology for Organic Photovoltaic Nanolayers

Organic Photovoltaics (OPVs) offer considerable advantages with respect to conventional silicon-based photovoltaic devices: OPVs are thin, flexible and lightweight, they can be made in custom shapes and sizes and they can be produced by low-cost, high-yield roll-to-roll (R2R) printing processes. Laser scribing of the OPV nanolayers allows for highly integrated modules with compact series interconnection of the OPV cells. To maximize production throughput, laser scribing can be integrated in R2R production lines, however this introduces new challenges: The interaction between the pulsed laser light and the printed nanolayers has to be investigated in order to optimize each scribing process (P1, P2, P3), while the scribing process dynamics (such as scribing speed and pulse overlap) have to be considered in relation to the R2R production environment. ELAS presents results of laser scribing on OPV nanolayers. These results will be used for the optimization of laser scribing systems integrated in R2R pilot production lines for the production of OPVs.

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