2D Excitons as Primary Energy Carriers in Organic Crystals: The Case of Oligoacenes

A number of organic crystals show anisotropic excitonic couplings, with weak interlayer interactions between molecules that are more strongly coupled within the layers. The resulting energy carriers are intralayer 2D excitons that diffuse along the interlayer direction. We model this analytically fo...

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Bibliographic Details
Main Authors: Emelianova, E.V (Author), Athanasopoulos, S. (Author), Silbey, Robert J. (Contributor), Beljonne, D. (Author)
Other Authors: Massachusetts Institute of Technology. Department of Chemistry (Contributor)
Format: Article
Language:English
Published: American Physical Society, 2010-09-21T16:52:09Z.
Subjects:
Online Access:Get fulltext
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100 1 0 |a Emelianova, E.V.  |e author 
100 1 0 |a Massachusetts Institute of Technology. Department of Chemistry  |e contributor 
100 1 0 |a Silbey, Robert J.  |e contributor 
100 1 0 |a Silbey, Robert J.  |e contributor 
700 1 0 |a Athanasopoulos, S.  |e author 
700 1 0 |a Silbey, Robert J.  |e author 
700 1 0 |a Beljonne, D.  |e author 
245 0 0 |a 2D Excitons as Primary Energy Carriers in Organic Crystals: The Case of Oligoacenes 
260 |b American Physical Society,   |c 2010-09-21T16:52:09Z. 
856 |z Get fulltext  |u http://hdl.handle.net/1721.1/58625 
520 |a A number of organic crystals show anisotropic excitonic couplings, with weak interlayer interactions between molecules that are more strongly coupled within the layers. The resulting energy carriers are intralayer 2D excitons that diffuse along the interlayer direction. We model this analytically for infinite layers and using quantum-chemical calculations of the electronic couplings for anthracene clusters. We show that the exciton hopping rates and diffusion lengths depend in a subtle manner on the size and shape of the interacting aggregates, temperature, and the presence of energetic disorder. 
520 |a European Union. MODECOM (NMP3-CT-2006-016434) 
520 |a European Union. ONE-P (NMP3-LA-2008-212311) 
520 |a Fonds national de la recherche scientifique (Belgium) 
520 |a The Inter University Computation Center (Israel) 
520 |a United States. Dept. of Energy. Office of Science 
520 |a United States. Dept. of Energy. Office of Basic Energy 
520 |a United States. Dept. of Energy (Grant No DE-SC0001088) 
546 |a en_US 
655 7 |a Article 
773 |t Physical Review Letters