Dresden 2011 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 30: Nano Wires: Growth and Characterization

HL 30.6: Talk

Tuesday, March 15, 2011, 11:30–11:45, FOE Anorg

Microstructures and electronic properties of one-dimensional ZnO nanostructures — •Peter Heß, Yong Lei, Martin Peterlechner, and Gerhard Wilde — Inst. f. Materialphysik, WWU Münster

One-dimensional (1-D) ZnO nanostructures were systematically investigated concerning their micro-structures and their photoluminescence properties. The main focus of this work is on the assembly of nanowires of different shapes and sizes to investigate their properties. The ZnO 1-D and 2-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 photoluminescence properties 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 concerning the electrical properties of the Nanowires.