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Solar & Alternative Energy

Photovoltaic metallizations

DuPont Microcircuit Materials

DuPont Microcircuit Materials (DuPont) has developed DuPontTM Solamet® PV76x photovoltaic metallizations, a new series of front side silver pastes designed to maximize efficiencies and improve the reliability of solar cells and panels utilizing Passivated Emitter Rear Cell (PERC) technology.

The new Solamet® PV76x paste has been successfully tested at leading solar cell and panel manufacturer Solartech Energy Corp. (Solartech), helping them to achieve a new power output record for their "Sapphire" solar panel.

DuPont has been working in close collaboration with Solartech since its inception in 2005, advancing efficiency with successive generations of Solamet® pastes. Solartech most recently utilized Solamet® PV76x frontside silver paste as part of a complete system, together with Solamet® PV36x aluminum paste and PV56x tabbing silver, to achieve 19.6 percent total efficiency with multi-crystalline PERC solar cells.

These high solar cell efficiencies, together with a four bus-bar design and low light induced degradation (LID) levels, have enabled the development of Solartech's 60-cell "Sapphire" solar panel featuring 286 watts of power - the highest power output reported for this type of solar panel.