Dresden 2011 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 7: Poster: Cluster
MO 7.5: Poster
Montag, 14. März 2011, 16:00–18:00, P1
Ultraviolet Photoluminescence of Ideal Nanodiamonds - Diamondoids — •Robert Richter1, David Wolter1, Lasse Landt1, Mathias Staiger1, Stephanie Wutschik1, Peter R. Schreiner2, Jeremy E. Dahl3, Robert M. K. Carlson3, Christoph Bostedt4, and Thomas Möller1 — 1Technische Universität, Berlin, Germany — 2Justus-Liebig-Universität, Gießen, Germany — 3Molecular Diamond Technologies, Richmond, USA — 4LCLS, Stanford, USA
Nanodiamonds, so called diamondoids are carbon clusters with perfect bulk diamond structure and complete hydrogen passivation. Diamondoids can be perfectly size-selected and isomer resolved even in their neutral state. This has made possible a variety of investigations on the size and shape dependence of their electronic structure and optical properties. We studied the photoluminescence of nanodiamonds and found intrinsic photoluminescence in the ultraviolet regime for various shapes and sizes of pristine hydrogen-passivated diamond clusters (diamondoids). The inclusion of high amounts of nitrogen into the nanodiamonds crystal lattice, using the example of urotropine (hexamethylenetetramine), is found to quench the luminescence. [1] L.Landt, D.Wolter et al. Phys. Rev. B 80, 205323 (2009)