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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)