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DS: Dünne Schichten
DS 31: Postersitzung
DS 31.37: Poster
Tuesday, March 27, 2001, 16:30–17:30, Foyer Saal 4
Theoretical Studies of the Electronic Structure of the Germanium Based 2D Sheet-polymer: Polygermyne — •Zoltán Hajnal1,2, Günther Vogg3, Lex Meyer3, Bernadett Szűcs4, Martin S. Brandt3, and Thomas Frauenheim1 — 1Theoretische Physik, Universität Paderborn, Warburger Str. 100, D-33100 Paderborn,Germany — 2Research Institute for Technical Physics and Materials Science, P.O.Box 49, H-1525 Budapest, Hungary — 3Walter Schottky Institut, Technische Universität München, Am Coulombwall, D-85748 Garching, Germany — 4Dept. of Atomic Physics, Budapest University of Technology and Economics, Budafoki út 8, H-1111 Budapest, Hungary
Band structure calculations are presented,
supported by photoluminescence and optical absorption
measurements of the recently synthesized germanium sheet
polymer: polygermyne.
A direct comparison with the silicon based analog, siloxene,
is made possible by similarity of the structure and
synthesis of these materials.
The computationally predicted direct band gap of 1.7 eV
compares well with the observed optical absorption edge in
polygermyne.