Dresden 2009 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 27: Poster Session I (Methods: Scanning probe techniques; Methods: Atomic and electronic structure; Methods: Molecular simulations and statistical mechanics; Oxides and Insulators: Clean surfaces; Oxides and Insulators: Adsorption; Oxides and Insulators: Epitaxy and growth; Semiconductor substrates: Clean surfaces; Semiconductor substrates: Epitaxy and growth; Semiconductor substrates: Adsorption; Nano- optics of metallic and semiconducting nanostructures; Electronic structure; Methods: Electronic structure theory; Methods: other (experimental); Methods: other (theory); Solutions on surfaces; Epitaxial Graphene; Surface oder interface magnetism; Phase transitions; Time-resolved spectroscopies)

O 27.43: Poster

Dienstag, 24. März 2009, 18:30–21:00, P2

Preparation and Investigation of one-dimensional ZnO nanostructures using the CVD process — •Patricia Thomasen, Yong Lei, and Gerhard Wilde — Institut für Materialphysik, Westfälische Wilhelms-Universität Münster, Germany

The preparation of one-dimensional (1D) ZnO nanostrutures via the CVD process is reported here. The growth follows the VLS process in a self-built CVD system. From the powder source, consisting of equal molar amounts of ZnO and C powders, the reactant vapor is transported to the substrate with the help of constant Argon flow. For the oxidation of the nanowires, only the leakage of oxygen inside the system is used. To obtain a good regularity of the wires, a UTAM (Ultra Thin Alumina Mask) surface nano-patterning process was used to produce regular arrays of catalyst dots on the substrate. The UTAMs were first tested for having a highly ordered arrangement of pores themselves. This was done by AFM measurements and a following Fourier transformation of the data. The so grown nanowires were afterwards charaterized by SEM, XRD and PL measurements.