Diffusion of vanadium in silicon

The diffusion profiles of vanadium in silicon have been investigated. In the temperature range 950-1200°C an in-depth profile measurement by deep level transient spectroscopy was used, and in the temperature range 600-800°C an annealing experiment which employed a technique for profiling the concentration of deep levels within a depletion region was used. From the two kinds of concentration-profile measurements, the diffusion coefficient of interstitial vanadium in silicon was determined, and it is represented by the expression D_V= 9.0×10^-3 exp(-1.55/kT) cm² s^-1.