De Wolf, StefaanStefaanDe WolfSzlufcik, JozefJozefSzlufcikDelannoy, Y.Y.DelannoyPerichaud, I.I.PerichaudHassler, C.C.HasslerEinhaus, R.R.Einhaus2021-10-142021-10-142002https://imec-publications.be/handle/20.500.12860/6234Solar cells from upgraded metallurgical grade (UMG) and plasma- purified UMG multi-crystalline silicon substratesJournal article