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

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

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