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Amphiphilic diblock copolymer-mediated structure control in nanoporous germanium-based thin films
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- Hohn, Nuri (author)
- Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany.
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- Hetzenecker, Andreas E. (author)
- Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany.
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- Giebel, Michael A. (author)
- Tech Univ Munich, Dept Chem, Lehrstuhl Anorgan Chem Schwerpunkt Neue Mat, Lichtenbergstr 4, D-85747 Garching, Germany.
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- Tech Univ Munich, Phys Dept, Lehrstuhl Funkt Mat, James Franck Str 1, D-85748 Garching, Germany Tech Univ Munich, Dept Chem, Lehrstuhl Anorgan Chem Schwerpunkt Neue Mat, Lichtenbergstr 4, D-85747 Garching, Germany. (creator_code:org_t)
- 2019
- 2019
- English.
- In: Nanoscale. - : ROYAL SOC CHEMISTRY. - 2040-3364 .- 2040-3372. ; 11:4, s. 2048-2055
- Journal article (peer-reviewed)
Abstract
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- 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 [Ge-9](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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
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- ENGINEERING AND TECHNOLOGY
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- Nanoscale
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- Royal Institute of Technology
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