[P-14-11] First Principles Calculations on ∑ 3 Grain Boundary Impurities in Polycrystalline Silicon A. Suvitha1、N. S. Venkataramanan1、R. Sahara1、H. Mizuseki1、Y. Kawazoe1 (1.Tohoku Univ.) https://doi.org/10.7567/SSDM.2009.P-14-11