Regensburg 2010 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 26: Poster Session

MM 26.54: Poster

Dienstag, 23. März 2010, 14:45–16:30, Poster C

Alternative contacting concept for ZnO nanostructures with regard to sensing applications — •Martin Gnauck¹, Ulrich Schröder¹, Raphael Niepelt¹, Carsten Ronning¹, and Rainer Adelung² — ¹Institute for Solid State Physics, Friedrich-Schiller-University Jena — ²Institute for Materials Science - Functional Nanomaterials, Christian-Albrechts-University Kiel

Due to the direct band gap of 3.37 eV at room temperature and high surface-to-volume-ratios zinc oxide nanowires exhibit some promising properties for upcoming sensing applications. Studying the electrical and opto-electrical properties of single nanowires usually requires complex techniques like electron beam lithography or preparation via focused ion beam (FIB). Well established photolithography, however, is economically reasonable and allows fabrication of new nanostructure based devices on a much larger scale.

Here, we present a comparatively easy method for contacting one- and two-dimensional ZnO nanostructures and investigate their electrical properties with regard to possible applications as UV-light and gas detectors. Therefore, photolithography is used for pre-structuring and pre-contacting the VLS-grown nanowires and nanosails.