Regensburg 2007 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 15: Preparation and characterization

HL 15.1: Talk

Monday, March 26, 2007, 17:15–17:30, H13

Synthesis and photoelectrical properties of CdS nanowires — •Holger Jens Böttcher, Cristina Gomez-Navarro, Marko Burghard, and Klaus Kern — Max-Planck-Institute for Solid State Research, Stuttgart, Germany

Semiconductor nanowires (NW) are emerging as versatile nanoscale building blocks of optoelectronic devices. In this context, extensive research is currently directed toward developing controlled synthesis procedures and microscopic characterization methods for NW. In this talk, the growth of Cadmium sulfide (CdS) NW via a solvothermal method will be presented. Investigations by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission microscopy (TEM), thermal gravimetric analysis (TGA) and µ-PL spectroscopy demonstrate that the utilised synthesis approach yields pure, structurally uniform and single-crystalline NW. Dark electrical transport measurements, complemented by spatially resolved photoconductivity experiments, were performed on individual NW in order to investigate the carrier transport in CdS NW.