Dresden 2017 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 9: Quantum Dots: Preparation and Characterization

HL 9.10: Vortrag

Montag, 20. März 2017, 12:15–12:30, POT 112

Investigating the crystal structure of CdSe and CdTe semiconductor nanowires — •Philip Harder, Tobias Redder, Andreas Nielsen, Tobias Kipp, and Alf Mews — Institut für Physikalische Chemie, Universität Hamburg, Grindelallee 117, 20146 Hamburg, Deutschland

The Solution-Liquid-Solid method allows to synthesize CdSe and CdTe nanowires with very small diameters (below 10 nm), that have interesting optical and electronical properties. These properties mainly depend on the ligands on the surface and the crystal structure, i. e. the zincblende to wurtzite ratio. We developed a method to determine the ratio in these nanowires via powder X-ray diffraction measurements. The analysis of the experimental powder diffraction patterns was carried out via genetic evolutional algorithms and the results were correlated with high resolution TEM measurements. We acknowledge financial support by the DFG via KI 1257/2 and ME 1380/16-3.