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Flexible organic and inorganic solar cells are increasingly becoming important as an alternative source of energy. Although solar cells are a proven concept / product, many challenges remain in the production process of these flexible thin-film solar cells. As part of the QCOALA project, flexible metal tabs or foils, made of aluminium or copper, were welded to the cells to form modules. This allowed an accurate, low heat input process within the solar cell, which is a very important aspect, since PV cells on
The super-capacitor battery comprised a ‘bank’ or ‘stack’ of batteries, which were interconnected using copper busbar terminals. Laser welding offered the advantage of high-speed, low heat input and low-distortion.