DuPont™ Solamet® offers a comprehensive system of thick-film materials used in the construction of photovoltaic (solar) cells.
The material properties and functional requirements of the front and back-sides of PV wafers dictate significant differences in the functionality of thick-film metallization pastes. The front-side is responsible for absorbing light and generating most of the electrical carriers. The thick-film conductor has the role of efficiently contacting the Si and transporting the photo-generated current without adversely affecting the semiconductor properties and without damaging the p-n junction. The backside should have an enhanced Back-Surface Field (BSF) to give a higher voltage difference.