Two new products that are claimed to reduce cost per watt while maintaining the same adhesion, solderability, and field reliability as current commercial products are being showcased at Intersolar North America by Ferro Electronic Materials. Ferro’s new PS 2130 and PS 2131 rear silver pastes have pure silver metallurgy and enable fast printing at speeds of more than 200mm per second, while retaining compatibility with its back surface aluminum pastes, which are said to be co-fired in a wide processing window.
“These new products lower the cost of ownership to make solar energy more cost-competitive by reducing both precious metal content and paste laydown,” noted Todd Williams, business manager for Ferro Electronic Materials. “PS 2130 and PS 2131 provide the same mechanical performance as previous pastes at significantly lower cost.”
The PS 2130 and PS 2131 silver pastes are designed for target fired thicknesses of 5–7 microns and 4–6 microns, respectively. Ferro said that the current lead-free new pastes offer a typical solar plant savings of up to US$5 million per year. This is based on the current cost of silver and a plant manufacturing 500 megawatts of silicon solar cells annually.
Ferro Electronic Materials is exhibiting at Intersolar North America in booth 5529.