4:47 PM - 4:48 PM [PS-6-18] Effects of Metal Contamination with Oxygen Precipitateson Lifetime Degradation in Cz-Si for Solar Cells ○K. Onishi1, T. Kojima1, K. Kinoshita1, Y. Ohshita2, A. Ogura1 (1.Meiji Univ. (Japan), 2.Toyota Tech. Inst. (Japan))