DuPont Introduces New Photovoltaic Metallization for Metal Wrap Through Solar Cell Designs
DuPont Microcircuit Materials (MCM) has introduced DuPont Solamet® PV701 photovoltaic metallization paste as its newest generation of Metal Wrap Through (MWT) technology for back side interconnected silicon solar cell designs. This advanced product composition enables the manufacture of back contact cell designs delivering up to 0.4% greater conversion efficiency for solar cells, and is an important part of the business’ roadmap of proposed technology options to help enable the industry goal for conversion efficiency of crystalline silicon (c-Si) solar cells beyond 20% by 2012.
"DuPont Solamet has become the leading brand in the photovoltaic industry because it has consistently raised the bar for efficiency, setting increasingly higher standards by enabling customers to reduce costs and enhance the competitiveness of their products," said Peter Brenner, Global Marketing Manager, photovoltaics - DuPont Microcircuit Materials. "DuPont MCM research scientists have been advancing photovoltaic cell efficiency for over 20 years with an aim to help the industry reach grid parity faster, and with Solamet PV701, we’re one critical step closer."
DuPont Solamet PV701 photovoltaic metallization paste is specifically developed as an enabler to provide up to 0.4% greater efficiency in MWT cell designs versus standard cell designs. MWT is a specialized cell structure that transfers the bus bars on the front side to the backside, reducing shading on the front side of the cell. The connections are made through holes in the silicon with the same composition as the bus bars. Employed as a via paste and p-contact metallization for back side tabbing interconnects, Solamet PV701 features what the company says is excellent electrical contact to front side silver grid structures, high-mechanical strength, low shunting, high-line conductivity and outstanding solderability as a p-contact metallization.
