Sn and Sb segregation and their possible use as surfactant for short-period Si/Ge superlattices

DOI to cite this document:: 10.5283/epub.10012

Dondl, W. ; Lütjering, G. ; Wegscheider, Werner ; Wilchelm, J. ; Schorer, R. ; Abstreiter, Gerhard

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Date of publication of this fulltext: 26 Oct 2009 14:13

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Abstract

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 ...