Two new rear silver conductor pastes are now available. The new products reportedly reduce cost per watt while maintaining the same adhesion, solderability, and field reliability as current commercial products, enabling solar energy to become a more cost-competitive energy generation alternative.

The new pastes have pure silver metallurgy and can enable fast printing at speeds of more than 200 mm per second. They are compatible with the company’s back surface aluminum pastes and can be co-fired in a wide processing window. Both provide robust soldering behavior with excellent adhesion to silicon wafers and have demonstrated field-proven module performance. PS 2130 and PS 2131 silver pastes are RoHS- and REACH-compliant and are free of lead, cadmium, and phthalates.

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