Berlin 2008 – wissenschaftliches Programm
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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.