P. Boucaud et al., IN-SITU ELLIPSOMETRIC CONTROL OF SI1-XGEX SI HETEROSTRUCTURES GROWN BY CHEMICAL BEAM EPITAXY/, Thin solid films, 248(1), 1994, pp. 1-5
In situ ellipsometric characterizations of Si1-xGex alloys are present
ed. The samples are grown by chemical beam epitaxy using silane and ge
rmane. The growth process (kinetics, composition etc.) is in situ cont
rolled using a rotating-polarizer multiwavelength ellipsometer. Severa
l examples of heteroepitaxy followed by ellipsometry are shown: desorp
tion of the native oxide and the initial growth stages are analysed at
different photon energies. The sequential heteroepitaxy of Si0.85Ge0.
15 on Si and Si on Si0.85Ge0.15 is investigated.