Heraeus Photovoltaics Business Unit is featuring its newest low silver content back-side tabbing pastes for conventional c-Si solar cells, the SOL202 Series at Intersolar North America.
The back-side tabbing paste is said contain 45% less silver than previous itterations while providing 18% better adhesion.
“With our recent purchase of the Ferro Corporation's Solar Paste Business, our combined R&D efforts have made significant reductions in Ag usage in back-side tabbing pastes while maintaining excellent performance,” said Dr. Weiming Zhang, Vice President of Technology for the Heraeus Photovoltaics Business Unit. “The SOL202 Series provides an adhesion 18% greater than our previous generation of back-side tabbing paste, but only has a silver content of 45%. Less paste can be applied to cells while retaining very good adhesion. This reduction in silver usage, combined with excellent performance will assist customers in reducing their cells' cost per watt. Depending on the customer's application, we believe we can reduce the silver content further.”