Extending the limits
Silver pastes: A committee of the industry association Semiconductor Equipment and Materials International (SEMI) is looking at how to reduce the amount of silver used in photovoltaic cells. Stephan Raithel of the SEMI PV Group as well as Weiming Zhang and David P. McMullen of Heraeus Precious Metals report on the goals, the approaches, and the achievements.
PV manufacturing is primarily cost driven. Within the latest edition of the International Technology Roadmap for PV (www.ITRPV.net) a detailed analysis of the strongest cost drivers along the supply chain has been conducted. When looking at the individual process steps the main elements driving the overall costs are throughput, productivity, depreciation, floor space, materials/consumables, utilities, …
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