By Martin A. Green
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A second laser grooving and doping step involving the other polarity follows. By aligning to the first step, series interconnection of the cells is also achieved in a very elegant process. Pacific Solar in Sydney is working on commercialising this process, although few details have yet been published (Pacific Solar, 1997). 8 Summary Although crystalline silicon devices have dominated the commercial marketplace for photovoltaics for more than two decades, there still remains scope for considerable improvement in both the performance and cost of these cells.
1997). This study involved representatives of seven major European photovoltaic manufacturers and research laboratories, and is valuable for the breadth of representation and the diversity of approaches explored. doc 04/24/01 30/49 hard-won political and technical consensus of those intimately involved with these issues. The key assumptions of the study were manufacturing volume of 500 MWp of solar cells per annum and the availability of silicon source material at US$25 per kg. A number of different technologies were compared.
A. (1984), ‘Limits on the open-circuit voltage and efficiency of silicon solar cells imposed by intrinsic Auger processes’, IEEE Trans. Electron Devices, ED– 31, 671–678. doc 04/24/01 44/49 Green M. A. (1987), High Efficiency Silicon Solar Cells, Trans Tech Publications, Aedermannsdorf, Switzerland. Green M. , Wang A. and Wenham S. R. (1992), ‘45% efficient silicon photovoltaic cell under monochromatic light’, IEEE Electron Devices Lett. 31, 317–318. Green M. A. and Wenham S. R. (1994), ‘Novel parallel multijunction solar cell’, Appl.