Migration was studied by using deep-level transient spectroscopic techniques, or by determining the diffusion profiles of a deep level within depletion regions. The profiles could be accurately described by solutions of Fick's equation. Near to room temperature, the diffusivity was studied by monitoring pair reactions with substitutional B. It was found that the results, at temperatures ranging from 287 to 363K, could be described by:

D(cm2/s) = 2.4 x 10-3exp[-0.72(eV)/kT]

H.Nakashima, K.Hashimoto: Materials Science Forum, 1992, 83-87, 227-32. See also: Materials Science Forum, 1994, 143-147, 761-6