Diminution of the activity of B atoms by H-induced defects in H2 and B2H6 co-implanted Si Katsuhiro Yokota, Syuusaku Nakase, Kazuhiro Nakamura, Fumiyoshi Miyashita, Masayasu Tannjou, Shigeki Sakai and Hiromichi Takano Eur. Phys. J. Appl. Phys., 27 1-3 (2004) 129-132 Published online: 15 July 2004 DOI: 10.1051/epjap:2004082