High performance solar cells made from 100% UMG silicon obtained via the PHOTOSIL process

The presented work is part of the French PHOTOSIL project which deals with the purification of metallurgical grade (MG) silicon to obtain Solar Grade (SoG) silicon by a combination of innovative refinement/up-grading techniques such as segregation and plasma purification. The main objectives of this project are production costs 15% solar cell efficiencies, and material yields >85% after crystallization.