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HL: Fachverband Halbleiterphysik

HL 17: Poster I

HL 17.2: Poster

Montag, 25. Februar 2008, 16:30–19:00, Poster D

Ionization potentials of the first members of the nanodiamond series — •Lasse Landt¹, Kathrin Klünder¹, Konstantin Lenzke¹, Trevor Willey², Tony van Buuren², Jeremy Dahl³, Robert Carlson³, Thomas Möller¹, and Christoph Bostedt¹ — ¹Technische Universität Berlin, Germany — ²Lawrence Livermore National Laboratory, USA — ³MolecularDiamond Technologies, USA

We experimentally determined the ionization potentials of small hydrogen-passivated nanodiamonds, so-called diamondoids. Diamondoids can be considered the smallest possible cage-like subunits that can be excised from diamond lattice closing the gap between large hydrocarbon molecules and nanodiamonds. Ranging in size from 0.5 to 1 nm, they can be perfectly size- and shape-selected. Ionization potentials were measured using total ion-yield spectroscopy. All data were taken from neutral, high purity samples in the gas phase yielding unprecedented comparability to theoretical predictions. The experimental ionization potentials for this new interesting class of nano-carbon materials is compared to theoretical predictions.