It was found that the Li diffusivity at between 25 and 1359C could be described by:

D(cm2/s) = 2.5 x 10-3exp[-0.65(eV)/kT]

Diffusion Rate of Li in Si at Low Temperatures. E.M.Pell: Physical Review, 1960, 119, 1222 and Diffusion of Li in Si at High T and the Isotope Effect. Physical Review, 1960, 119, 1014