Metal Foil Solutions for the Solar Industry
Tin Foils & Solderable Metal Composites for Photovoltaic Systems
The photovoltaic industry demands durable, conductive, and precisely processable materials - especially for the electrical interconnection of solar cells and the joining technologies used in PV modules. EppsteinFOILS has long been supplying solderable metal foils and laminated composites based on high-purity tin foils that serve as contact layers in ribbons and other PV components used worldwide.
Thanks to a strong focus on innovation, close cooperation with research institutes, and customized manufacturing, we are continuously developing new applications for metallic functional carriers in solar energy systems.
Solderable Tin Foil for Ribbons & Cell Interconnection
Our metallic foil solutions are used as base materials for ribbons that electrically interconnect solar cells. In this context, excellent solderability, electrical conductivity, purity, and bonding behavior are crucial.
EppsteinFOILS tin foil for photovoltaics offers:
- High-purity metal for maximum conductivity
- Uniform layer thicknesses for reliable soldering processes
- Compatibility with lead-free solder alloys
- Flexible adaptation to customer-specific geometries and multilayer structures
contacfoil® - Patented Metal Foil Solution for Next-Generation PV
Under the brand name contacfoil®, EppsteinFOILS offers an innovative, flexible metallic alternative to conventional circuit boards - ideal for rear-side contacts or flexible interconnections in modern PV concepts.
Key advantages of contacfoil® technology:
- Fully solderable structure on ultra-thin metal foil
- Flexible and formable - ideal for curved or bendable PV modules
- Material-efficient and compatible with thin-film technologies
- Potential for roll-to-roll processing in module production
contacfoil® is the result of over a decade of R&D, in collaboration with leading photovoltaic institutes, equipment manufacturers, and module producers.
Research Partnerships & Development Expertise
We actively collaborate with research institutions and innovation networks to shape the next generation of PV contact foils. Whether for classic silicon cells, thin-film modules or hybrid technologies - our metal foils help improve electrical efficiency, mechanical stability, and cost-effectiveness of solar modules.
Technological Benefits of Our PV Foils:
- Temperature-sensitive tin coatings for controlled soldering
- Laminations with functional substrates possible
- High tensile strength at minimal thicknesses (<50 µm)
- Low material usage with high conductivity
- Recyclable and RoHS-compliant
