The low temperature evolution of point defects induced in SiC by ion irradiation was investigated by deep level transient spectroscopy. The defects were introduced by irradiation with a 7.0 MeV beam of C+ ions at a fluence of 6 × 109 cm− 2. Annealing was then performed in the temperature range of 330–400 K in order to study the change in point defect structure with temperature. The low temperature annealing performed was observed to induce a change in the produced defects. The deep levels related to the Sx (EC − 0.6 eV) and S2 defects (EC − 0.7 eV) recovered with annealing while, simultaneously, a new level, S1 (EC − 0.4 eV), was formed. The activation energy of the S1 defect is 0.94 eV, while the annealing of both the Sx and S2 levels occurred with activation energy of 0.65 eV.
1 Jan 2009
Volume: 18 Issue: 1 Pages: 39-42
Diamond and related materials