Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Nadine Geyer"'
Publikováno v:
ACS Applied Materials & Interfaces. 5:4302-4308
The charge transport mechanism during metal-assisted chemical etching of Si nanowires with contiguous metal films has been investigated. The experiments give a better insight how the charges and reaction products can penetrate to the etching front. T
Autor:
Hartmut S. Leipner, Peter Werner, Nadine Geyer, Bodo Fuhrmann, Johannes de Boor, Zhipeng Huang
Publikováno v:
The Journal of Physical Chemistry C. 116:13446-13451
Metal-assisted chemical etching is a relatively new top-down approach allowing a highly controlled and precise fabrication of Si and Si/Ge superlattice nanowires. It is a simple method with the ability to tailor diverse nanowire parameters like diame
Publikováno v:
Advanced Materials. 23:285-308
This article presents an overview of the essential aspects in the fabrication of silicon and some silicon/germanium nanostructures by metal-assisted chemical etching. First, the basic process and mechanism of metal-assisted chemical etching is introd
Publikováno v:
The Journal of Physical Chemistry C. 114:10683-10690
Assisted by noble metal particles, non-(100) Si substrates were etched in solutions with different oxidant concentrations at different temperatures. The etching directions of (110) and (111) Si substrates are found to be influenced by the concentrati
Autor:
Seref Kalem, T.K. Nguyen-Duc, U. Gösele, Peter Werner, W. Erfurth, Manfred Reiche, P. Das Kanungo, Nadine Geyer, Horst Blumtritt, Nikolai Zakharov, A. Wolfsteller
Publikováno v:
Thin Solid Films. 518:2555-2561
Silicon nanowires (NWs) and vertical nanowire-based Si/Ge heterostructures are expected to be building blocks for future devices, e.g. field-effect transistors or thermoelectric elements. In principle two approaches can be applied to synthesise these
Autor:
Woo Lee, Zhipeng Huang, Tomohiro Shimizu, Ulrich Gösele, Zhang Zhang, Xuanxiong Zhang, Stephan Senz, Nadine Geyer
Publikováno v:
Nano Letters. 9:2519-2525
The metal-assisted etching direction of Si(110) substrates was found to be dependent upon the morphology of the deposited metal catalyst. The etching direction of a Si(110) substrate was found to be one of the two crystallographically preferred 100 d
Publikováno v:
physica status solidi c. 6:690-695
We report on both the fabrication of hexagonally ordered, vertically aligned silicon nanowires (SiNW) and their characterization by means of analytical transmission electron microscopy. Combining colloidal lithography, plasma etching, and catalytic w
Publikováno v:
Vacuum. 86:1232-1234
We report on the fabrication of hexagonally ordered, sub-wavelength hole arrays (SWHA) by colloidal lithography combined with reactive ion etching and a lift-off process, and their characterization with scanning electron microscopy and ellipsometry.
Publikováno v:
Applied Physics A. 95:325-327
We report on the characterization of hexagonally ordered, vertically aligned silicon nanowires (SiNW) by means of analytical transmission electron microscopy. Combining colloidal lithography, plasma etching, and catalytic wet etching arrays of SiNW o
Publikováno v:
MRS Proceedings. 1408
The selective formation of porous silicon in nanowires is observed in Si/Ge epitaxial layers along Ge layers grown by molecular beam epitaxy on a Si(100) substrate after metal-assisted chemical etching in aqueous HF-H2O2 solution. We assume that Ge l