Author:
Vogg Günther,Brandt Martin S.,Meyer Lex J.-P.,Stutzmann Martin,Hajnal Zoltán,Szücs Bernadett,Rauenheim Thomas
Abstract
ABSTRACTThe structural, optical and electronic properties of the Ge sheet polymer poylgermyne are summarized. Prepared via topotactic transformation of Zintl-phase CaGe2, (GeH)n forms a layered crystal in a tr6 stacking sequence with a distance of 5.65 Å between adjacent layers. The photoluminescence at 1.3 eV is excited nearly resonantly with a Stokes shift of 0.2 eV. Together with band structure calculations this shows that polygermyne has a direct band gap.
Publisher
Springer Science and Business Media LLC
Cited by
2 articles.
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