Ferro debuts silver conductor pastes for cost/W savings in solar PV Si module assembly

Ferro Electronic Materials is introducing two new rear silver conductor pastes at Intersolar North America. The products were developed to lower cost/Watt with commercially viable levels of adhesion, solderability, and field reliability.

July 12, 2011 — Ferro Electronic Materials is introducing two new rear silver conductor pastes at Intersolar North America this week in San Francisco, CA. The products were developed to lower solar photovoltaics cost/Watt with commercially viable levels of adhesion, solderability, and field reliability.

PS 2130 and PS 2131 rear silver pastes have pure silver metallurgy and enable printing at more than 200mm/sec. They can be used with Ferro?s back surface aluminum pastes and co-fired in a wide processing window. PS 2130 and PS 2131 silver pastes are RoHS- and REACH-compliant, free of lead, cadmium, and phthalates. PS 2130 and PS 2131 are designed for target fired thicknesses of 5-7 and 4-6µm, respectively.

Adhesion to silicon, mechanical stability, and in field reliability are comparable to more expensive products. In Ferro’s analysis, the pastes offer a solar module fab savings up to $5million/year over Ferro?s current lead-free thrifted silver conductor paste. The analysis is based on silver costs and a fab producing 500MW of Si solar cells/year. Cost savings are achieved by both reducing precious metal content and paste laydown, said Todd Williams, business manager for Ferro Electronic Materials

Ferro Corporation makes technology-based performance materials for electronics, industrial and energy manufacturers. Learn more at www.ferro.com.

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