M. Kittler et W. Seifert, 2 TYPES OF ELECTRON-BEAM-INDUCED CURRENT BEHAVIOR OF MISFIT DISLOCATIONS IN SI(GE) - EXPERIMENTAL-OBSERVATIONS AND MODELING, Materials science & engineering. B, Solid-state materials for advanced technology, 24(1-3), 1994, pp. 78-81
The paper reports measurements of electron-beam-induced current contra
st c vs. temperature T and beam current I(b) for two misfit dislocatio
ns in a p-type Si/SiGe sample. It is demonstrated that the different b
ehaviour observed can be explained on the basis of the Shockley-Read-H
all recombination theory. The activity of the dislocation with dc(T)/d
T>0 is controlled by deep centres while that of the other dislocation
having dc(T)/dT<0 indicates shallow centres lying about 0.075 eV from
the band edge.