Regensburg 2010 – scientific programme

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O: Fachverband Oberflächenphysik

O 59: Poster Session II (Nanostructures at surfaces: Dots, particles, clusters; Nanostructures at surfaces: arrays; Nanostructures at surfaces: Wires, tubes; Nanostructures at surfaces: Other; Plasmonics and nanooptics; Metal substrates: Epitaxy and growth; Metal substrates: Solid-liquid interfaces; Metal substrates: Adsoprtion of organic / bio molecules; Metal substrates: Adsoprtion of inorganic molecules; Metal substrates: Adsoprtion of O and/or H; Metal substrates: Clean surfaces; Density functional theory and beyond for real materials)

O 59.13: Poster

Wednesday, March 24, 2010, 17:45–20:30, Poster B1

One-dimensional ZnO nanostructures and their property investigation — •Peter Heß, Yong Lei, and Gerhard Wilde — Institut für Materialphysik, Westfälische Wilhelms-Universität Münster

One-dimensional (1-D) ZnO nanostructures were systematically investigated concerning their micro-structures and properties. The main focus of this work is on the assembly of thin and well-aligned nanowires to investigate their optical properties. The ZnO 1-D structures were prepared using a Chemical Vapour Deposition (CVD) system with ZnO/C mixtures as sources, Au-coated silicon or sapphire as substrates, and an argon and oxygen gas flow as a distributor and oxidation source. Depending on the conditions during the CVD process, different kinds of ZnO nanostructures were obtained. The morphology of the ZnO nanostructures was checked by SEM while the optical properties (photoluminescence) were investigated using a spectrometer. Additionally, the crystalline structures, the growth direction, and the lattice spacing of ZnO nanostructures were characterized using TEM. First experiments were also conducted using porous alumina membranes as templates to obtain very thin and well-aligned ZnO nanowires.