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Title:ELECTRONIC AND OPTICAL PROPERTIES OF Si-CAPPED AND Ge-CAPPED NANOCRYSTALLITES
DOI No:10.1142/9789812701947_0010
Source:PHYSICS, CHEMISTRY AND APPLICATION OF NANOSTRUCTURES (pp 66-69)
Author(s):L. E. RAMOS
Friedrich-Schiller-Universität Jena, Institut für Festkörpertheorie und –optik, Max-Wien-Platz 1, 07743 Jena, Germany

J. FURTHMÜLLER
Friedrich-Schiller-Universität Jena, Institut für Festkörpertheorie und –optik, Max-Wien-Platz 1, 07743 Jena, Germany

F. BECHSTEDT
Friedrich-Schiller-Universität Jena, Institut für Festkörpertheorie und –optik, Max-Wien-Platz 1, 07743 Jena, Germany

Abstract:We present a study of the electronic structure and optical absorption spectra of Si(Ge)-capped Ge(Si) nanocrystallites (NC's) by means of ab initio pseudopotential plane-wave calculations. In certain aspects the capped Si(Ge) NC's are similar to the analogous Si/Ge heterojunctions. A compensation effect involving the overall composition of the nanocrystallite and quantum confinement effects is predicted for the Si-capped Ge NC's.
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