Hamburg 2009 – scientific programme

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SYSM: Single Molecule Spectroscopy of Nanoobjects

SYSM 1: Single Molecule Spectroscopy of Nanoobjects I

SYSM 1.1: Invited Talk

Thursday, March 5, 2009, 10:30–11:10, VMP 8 HS

Dynamics of Semiconductor Nanocrystals and Quantum dot- Dye Assemblies — •Christian von Borczyskowski — Center for Nanostructured Materials and Analytics (nanoMA), Chemnitz University of Technology, Chemnitz, Germany

Semiconductor quantum dots such as silicon or CdSe show rich dynamics of exciton formation and relaxation which can be investigated by single molecule techniques. Dynamics are controlled by electron-phonon coupling and photo-induced charge (blinking) and/or energy transfer (FRET). In this contribution we will concentrate on the interplay of these processes. In general, this interplay can only be described properly by taking into account the spatial distribution of the exciton wave function. Moreover, we will show that the wave function can be probed by single dye molecules attached to the surface of a single quantum dot.