Modeling growth in SiGe gas-source molecular beam epitaxy using Si2H6 and GeH4
We have modeled SiGe growth with gas-source molecular beam epitaxy using Si2H6 and GeH4. The model is described by a combination of Si2H6 and GeH4 adsorptions and hydrogen desorption. The Si2H6 and GeH4 adsorptions are two-site and four-site adsorption processes respectively. The hydrogen desorption is a first order reaction. The model allows predictions of substrate-temperature dependencies of SiGe growth rate and surface-hydrogen coverage in the wide temperature range of 450700C.
growth sige adsorption desorption si gas-source mbe