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Lecture Frank Spano


04 June 2010 FWN-Building 5113.0202, Nijenborgh 4, 9747 AG, Groningen
Speaker: Prof. Dr. Frank Spano
Affiliation: Temple University, Philadelphia, USA
Title: Understanding exciton coherence in molecular H- and J-aggregates: Applications to polyacenes
Date: Fri Jun 4, 2010
Start: 11.00
Location: FWN-Building 5113.0202
Host: Jasper Knoester
Telephone: +31 50 363 4369


Coherent exciton transport in molecular assemblies is highly prized since it occurs on much faster timescales than incoherent or diffusive hopping and can therefore be exploited to optimize devices like organic light emitting diodes and solar cells.

In this talk, it is shown how the exciton coherence length can be simply and directly obtained from the shape of the photoluminscence spectrum in a range of technologically important materials. Applications are made to anthracene and tetracene thin films which behave in many ways like molecular J-aggregates. 

Last modified:22 October 2012 2.30 p.m.