Objective Free-standing III-V semiconductor nanowires, with diameters of about 20 to 80 nm at a length of several µm, offer tremendous possibilities for application in photovoltaics, optoelectronics, information technology as well as life-science. Semiconductor nanowire devices are not only smaller than conventional structures and significantly power-saving, but can even exhibit qualitatively novel behavior. Due to the small size and the very large surface to bulk ratio, the nanowire surface has a crucial influence on the performance of the entire device.Up to now, the conductivity and other electric properties of single nanowire devices on one hand and the nanowire crystal and surface structure on the other hand could only be measured separately. Here, we will combine both approaches in a novel experimental setup, enabling us to achieve information on the atomic surface structure and local electronic properties of an individual nanowire as well as the global electric behavior of a device built by the same nanowire simultaneously. For this purpose, we will study single, individually contacted semiconductor nanowires using scanning tunneling microscopy and spectroscopy (STM), obtaining data on e.g. the chemical composition and atomic reconstruction of the nanowire surface as well as the local density of states and local variations of the band alignment. During these STM measurements, external source, drain and gate voltages can be applied to the nanowire device, revealing the complex interaction of the nanowire surface, local charge distribution, and global device performance like conductivity and other transport properties. Fields of science natural sciencesphysical sciencesopticsmicroscopyscanning tunneling microscopy Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) FP7-PEOPLE-2009-IEF - Marie Curie Action: "Intra-European Fellowships for Career Development" Call for proposal FP7-PEOPLE-2009-IEF See other projects for this call Funding Scheme MC-IEF - Intra-European Fellowships (IEF) Coordinator MAX IV Laboratory, Lund University EU contribution € 179 169,40 Address Paradisgatan 5c 22100 LUND Sweden See on map Region Södra Sverige Sydsverige Skåne län Activity type Higher or Secondary Education Establishments Administrative Contact Anders Mikkelsen (Dr.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data
