Published online by Cambridge University Press: 26 February 2011
Carbon has been implanted into Si to overlap implanted concentrations of oxygen and nitrogen. Impurity incorporation and interactions produced by implantation at 50°C, and upon subsequent annealing to 900°C, were monitored by infrared absorption. Implantation with 0 and C introduces absorption bands for C-0 centers in addition to those for substitutional C, interstitial 0, and 0-vacancy centers. These centers are removed by annealing. The major effect of C in N-implanted layers is a suppression of absorption bands associated previously with N aggregates. There is, apparently, a strong interaction between C and displacement defects which can alter defect reordering and control the loss of C from substitutional sites.