Dondl, W. and Lütjering, G. and Wegscheider, Werner and Wilchelm, J. and Schorer, R. and Abstreiter, Gerhard (1993) Sn and Sb segregation and their possible use as surfactant for short-period Si/Ge superlattices. Journal of Crystal Growth 127 (1-4), pp. 440-442.
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The incorporation behaviour of antimony and tin in Ge was studied by means of Auger electron spectroscopy. By comparing the measured intensity ratios with a simple incorporation model, we find that Sn is stronger segregating than antimony. The activation energies are 0.34 and 0.27 eV, respectively. Using both materials in order to improve the interface sharpness of short-period Si/Ge superlattices, we can show that antimony improves the superlattice structure up to growth temperatures of 600°C, while with tin the superlattice growth is destroyed.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||26 Oct 2009 14:13|
|Last Modified:||20 Jul 2011 21:51|