DuPont Microcircuit Materials has enhanced the performance of its ‘Solamet’ PV18x series frontside silver metallisation materials for monocrystalline wafers employing enhanced Lightly Doped Emitters (LDEs) that were showcased at PV Taiwan 2013.
DuPont said that it had made significant R&D investment in the PV18x series material beyond that provided by Solamet PV17x series, offering solar cell manufacturers improved productivity and conversion efficiency, while providing a cost competitive product.
Providing optimised LDE performance was said to be “a strong differentiator” for PV cell producers as Solamet PV18A demonstrated efficiency gains with finer lines and lower laydown than previous iterations.
DuPont noted that it was also developing diffusion recipes in-house aimed at boosting cell efficiencies beyond 19.3% already demonstrated on monocrystalline wafers that use the lasted PV18A silver paste.
“Solamet PV17x series was the first commercial paste that was able to unlock efficiency gains by being able to contact LDEs,” said Peter Brenner, global photovoltaic marketing manager, DuPont Microcircuit Materials. “Now Solamet PV18x expands productivity even further by delivering greater efficiency from even better contact to LDEs together with less material required.”
Taiwan is home to a large number of dedicated manufacturers for both multicrystalline and monocrystalline-based solar cells with the second largest annual output of solar cells after China.