Regensburg 2007 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 46: Poster 2

HL 46.2: Poster

Donnerstag, 29. März 2007, 15:00–17:30, Poster A

Pulsed laser deposition growth and characterisation of aligned graphitic nanostructures on LiNbO3 — •Dominikus Kölbl, Jens Ebbecke, and Achim Wixforth — Universität Augsburg, Universitätstr. 1, 86159 Augsburg

Low dimensional electronic structures attract high interest both for scientific research and possible applications in electrochemical devices and ICs.

We report on aligned structures of graphite growing along certain crystal directions of LiNbO3 by pulsed laser deposition. Scanning electron microscopy analysis showed strong alignment during growth of theses ``carbon nano sticks'' (CNS) due to pyroelectric fields induced by thermal gradients across the substrate. These CNS reaching aspect-ratios up to 65 (L = 5,7um; d = 88nm) are appropriate onedimensional electronic systems similar to famous carbon nano tubes. We investigated detailed characterization of these CNS grown at different PLD parameters. Furthermore the CNS have been contacted by e-beam lithography in order to perform electrically conduction measurements.