School of Photovoltaic and Renewable Energy Engineering, University of NSW

摘要

Due to the conductive properties, and device structure of polycrystalline silicon thin-film solar cells on glass, a robust, repeatable and cheap interconnection technique remains a key challenge. Wire-bonding as a means of tabbing individual cells, and for series interconnection to form modules is the subject of investigation in this paper. 'Dead' areas that neither contribute to current collection or current transport are identified as a key loss in current poly-Si thin-film solar cells utilizing laser scribing wire-bonding as a series cell interconnection technique. Two sample cell designs that incorporate wire-bond interconnection sites are presented in an attempt to overcome the losses sustained by large 'dead' areas in current devices. Such designs have the potential to increase efficiencies of poly-Si thin-film devices by up to 7%.