Hannover 2010 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 24: Atomic Clusters IV
A 24.3: Vortrag
Freitag, 12. März 2010, 11:30–11:45, F 303
Optical spectroscopy of metal doped silicon clusters in rare gas matrices — •Vicente Zamudio-Bayer1, Konstantin Hirsch1, Thomas Möller1, Alexandre Rydlo2, Stefan Minniberger2, Wolfgang Harbich2, Bernd von Issendorff3, and Tobias Lau4 — 1Technische Universität Berlin, Institut für Optik und Atomare Physik, EW 3-1, Hardenbergstraße 36, D-10623 Berlin — 2Institut de Physique des Nanostructures, EPFL, CH-1015 Lausanne — 3Albert-Ludwigs-Universität Freiburg, Fakultät für Physik/FMF, Stefan-Meier-Straße 21, D-79104 Freiburg — 4Helmholtz-Zentrum Berlin für Materialien und Energie, Wilhelm-Conrad-Röntgen Campus / BESSY II, Institut für Methoden und Instrumentierung der Synchrotronstrahlung (G-I2), Albert-Einstein-Str. 15, D-12489 Berlin
Although theoretical studies predict technologically relevant optical properties for certain species of metal doped silicon clusters, such as large HOMO-LUMO gaps, these have not been studied experimentally. The reason for this is the very small achievable target density. In order to overcome this obstacle, we have taken our intense cluster source and combined it with a rare-gas matrix isolation apparatus at EPFL. With this setup it was possible to study the fluorescence and measure the excitation spectra of such clusters. This talk will cover the experimental setup and some preliminary results.