The effects of thermal cyclic annealing upon defects in solar cells on Si substrates were considered. It was found that the defect density was reduced and that the solar cell efficiency was improved by cyclic annealing. The defect density was studied as a function of the cyclic annealing temperature and Al content.

T.Soga, M.Yang, T.Kato, T.Jimbo, M.Umeno: Materials Science Forum, 1995, 196-201, 1779-84