Leveraging both boron and phosphorous implantation, Suniva has already produced 19.1 percent efficient n-type solar cells on 156 mm production wafers, which have been certified by Fraunhoffer.

Suniva and Varian expanded their development partnership in February 2010 to focus on the utilization of n-type wafers and boron implantation. The use of n-type wafers in the third generation ARTisun ...