Organic template directed growth of one- and two-dimensional GeX[sub 2]/template superstructures (X=S, Se)

Chen, L.; Klar, P. J.; Heimbrodt, W.; Oberender, N.; Kempe, D.; Fröba, M.
December 2000
Applied Physics Letters;12/11/2000, Vol. 77 Issue 24
Academic Journal
We have obtained GeX[sub 2] nanostructures (X = S, Se) via a template-directed synthesis using organic templates and inorganic precursors. Depending on the choice of organic template, the GeS[sub 2]/template superstructures are either lamellar or have a two-dimensional superstructure of hexagonal symmetry. All GeSe[sub 2]/template superstructures are lamellar. The superstructure periods are typically below 5 nm. The microscopic structure of the IV-VI[sub 2] walls is revealed by Raman spectroscopy. In the GeSe[sub 2]-based superstructures, the semiconductor layers consist of an amorphous network of GeSe[sub 4] tetrahedrons. In the GeS[sub 2]-based nanostructures, the walls are a network of adamantan-like Ge[sub 4]S[sub 10] cage units. © 2000 American Institute of Physics.


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