| Autor: |
Hohn N; Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching, Germany. muellerb@ph.tum.de., Hetzenecker AE, Giebel MA, Geier S, Bießmann L, Körstgens V, Saxena N, Schlipf J, Ohm W, Deimel PS, Allegretti F, Barth JV, Roth SV, Fässler TF, Müller-Buschbaum P |
| Jazyk: |
angličtina |
| Zdroj: |
Nanoscale [Nanoscale] 2019 Jan 23; Vol. 11 (4), pp. 2048-2055. |
| DOI: |
10.1039/c8nr09427f |
| Abstrakt: |
Fabrication of porous, foam-like germanium-based (Ge-based) nanostructures is achieved with the use of the amphiphilic diblock copolymer polystyrene-b-polyethylene oxide as structure directing agent. Basic concepts of block copolymer assisted sol-gel synthesis are successfully realized based on the [Ge9]4- Zintl clusters as a precursor for Ge-based thin films. Material/elemental composition and crystalline Ge-based phases are investigated via X-ray photoelectron spectroscopy and X-ray diffraction measurements, respectively. Poor-good solvent pair induced phase separation leads to pore sizes in the Ge-based films up to 40 nm, which can be tuned through a change of the molar mixing ratio between polymer template and precursor as proven by grazing incidence small angle X-ray scattering and scanning electron microscopy. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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