The diffusion of Se from vapor sources was studied between 1050 and 1250C. It was found that the results obeyed Fick’s law and could be described by:

D(cm2/s) = 9.5 x 10-1exp[-2.6(eV)/kT]

N.S.Zhdanovich, J.I.Kozlov: Fizika i Tekhnika Poluprovodnikov, 1975, 9[8], 1594-5