Heraeus Photovoltaics, the worldwide leading supplier of metallization solutions to the PV industry, announced the introduction of a new family of low-temperature Ag-pastes at the PV Expo show, Tokyo. Both pastes are designed for emerging solar cell architectures of third-generation PV such as heterojunction or organic pv solar cells. These pastes accommodate the technical requirements of innovative grid and busbar applications in manufacturing advanced solar cell concepts.
The new SOL500 series is formulated for the processing of solar cell types which cannot withstand high firing temperatures. The SOL560 is designed for the curing temperature range of heterojunction solar cells of less than 200 °C, the SOL530 accommodates the 125-135°C range required in the production of organic solar cells. Both pastes show an excellent adhesion on ITO or other TCO materials and provide PV cell manufacturers with improved printability and adhesion, excellent line conductivity and minimal pinholes. The SOL560 can be stored and processed at room temperature, which relieves PV cell manufacturers from time-consuming freeze and unfreeze processes. Commenting on the new products, Dr. Matthias Hoerteis, Director Innovations of Heraeus Photovoltaics, said, “Our innovation philosophy is guided by a simple principle: everything we do is focused on delivering superior performance for our PV cell manufacturing customers. As solar systems push for greater performance and functionality, these new pastes are perfectly qualified to meet these rigorous standards.”