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Cooperative lifetime reduction of single acene molecules attached to the surface of neon clusters

Markus Müller, Sharareh Izadnia, Sebastiaan M. Vlaming, Alexander Eisfeld, Aaron LaForge, and Frank Stienkemeier
Phys. Rev. B 92, 121408(R) – Published 16 September 2015

Abstract

Tetracene and pentacene molecules attached to the surface of neon clusters have been spectroscopically investigated. The fluorescence spectra indicate that the molecules are immobilized on the surface and, to a large extent, do not form complexes. By varying the number of attached molecules, laser power, or neon cluster size, we find a systematic fluorescence lifetime reduction up to a factor of 20 indicating a cooperative coupling in our system. For averaged intermolecular distances greater than 33 Å, we attribute the reduction in fluorescence lifetime to Dicke superradiance, while for smaller intermolecular distances, nonradiative decay mechanisms cause additional lifetime reduction.

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  • Received 24 November 2014

DOI:https://doi.org/10.1103/PhysRevB.92.121408

©2015 American Physical Society

Authors & Affiliations

Markus Müller1, Sharareh Izadnia1, Sebastiaan M. Vlaming2, Alexander Eisfeld2, Aaron LaForge1,*, and Frank Stienkemeier1

  • 1Physics Department, University of Freiburg, Hermann-Herder-Str. 3, D-79104 Freiburg, Germany
  • 2Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, D-01187 Dresden, Germany

  • *aaron.laforge@physik.uni-freiburg.de

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Vol. 92, Iss. 12 — 15 September 2015

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