Modelling exciton diffusion in disordered conjugated polymers

S Athanasopoulos; E V Emelianova; Alison B Walker; D Beljonne

doi:10.1117/12.854434

Modelling exciton diffusion in disordered conjugated polymers

S Athanasopoulos, E V Emelianova, Alison B Walker, D Beljonne

Department of Physics

Research output: Contribution to journal › Article

6 Citations (SciVal)

185 Downloads (Pure)

Abstract

We present a combined quantum-chemical and Monte Carlo approach for calculating exciton transport properties in disordered organic materials starting from the molecular scale. We show that traps and energetic disorder are the main limitations for exciton diffusion in conjugated polymers. An analytical model for exciton hopping in a medium of sites with uncorellated energetic disorder gives a quantitative description on the dependence of the diffusion length to both the energetic disorder strength and temperature. We demonstrate how traps and energetic disorder can pin down the diffusion length in conjugated polymers to values below 10 nm.

Original language	English
Article number	772214
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7722
DOIs	https://doi.org/10.1117/12.854434
Publication status	Published - 2010
Event	Organic Photonics IV, April 12, 2009 - April 15, 2009 - Brussels, Belgium Duration: 1 Jan 2010 → …

Access to Document

10.1117/12.854434

Accepted version
Copyright 2010 (year) Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Accepted author manuscript, 1.26 MB

Cite this

@article{98218e1f73eb423baeb4da3957e6e2b3,

title = "Modelling exciton diffusion in disordered conjugated polymers",

abstract = "We present a combined quantum-chemical and Monte Carlo approach for calculating exciton transport properties in disordered organic materials starting from the molecular scale. We show that traps and energetic disorder are the main limitations for exciton diffusion in conjugated polymers. An analytical model for exciton hopping in a medium of sites with uncorellated energetic disorder gives a quantitative description on the dependence of the diffusion length to both the energetic disorder strength and temperature. We demonstrate how traps and energetic disorder can pin down the diffusion length in conjugated polymers to values below 10 nm.",

author = "S Athanasopoulos and Emelianova, {E V} and Walker, {Alison B} and D Beljonne",

note = "Organic Photonics IV. 12-15 April 2009. Brussels, Belgium.; Organic Photonics IV, April 12, 2009 - April 15, 2009 ; Conference date: 01-01-2010",

year = "2010",

doi = "10.1117/12.854434",

language = "English",

volume = "7722",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

}

TY - JOUR

T1 - Modelling exciton diffusion in disordered conjugated polymers

AU - Athanasopoulos, S

AU - Emelianova, E V

AU - Walker, Alison B

AU - Beljonne, D

N1 - Organic Photonics IV. 12-15 April 2009. Brussels, Belgium.

PY - 2010

Y1 - 2010

N2 - We present a combined quantum-chemical and Monte Carlo approach for calculating exciton transport properties in disordered organic materials starting from the molecular scale. We show that traps and energetic disorder are the main limitations for exciton diffusion in conjugated polymers. An analytical model for exciton hopping in a medium of sites with uncorellated energetic disorder gives a quantitative description on the dependence of the diffusion length to both the energetic disorder strength and temperature. We demonstrate how traps and energetic disorder can pin down the diffusion length in conjugated polymers to values below 10 nm.

AB - We present a combined quantum-chemical and Monte Carlo approach for calculating exciton transport properties in disordered organic materials starting from the molecular scale. We show that traps and energetic disorder are the main limitations for exciton diffusion in conjugated polymers. An analytical model for exciton hopping in a medium of sites with uncorellated energetic disorder gives a quantitative description on the dependence of the diffusion length to both the energetic disorder strength and temperature. We demonstrate how traps and energetic disorder can pin down the diffusion length in conjugated polymers to values below 10 nm.

UR - http://www.scopus.com/inward/record.url?scp=77954419794&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1117/12.854434

U2 - 10.1117/12.854434

DO - 10.1117/12.854434

M3 - Article

SN - 0277-786X

VL - 7722

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

M1 - 772214

T2 - Organic Photonics IV, April 12, 2009 - April 15, 2009

Y2 - 1 January 2010

ER -

Modelling exciton diffusion in disordered conjugated polymers

Abstract

Access to Document

Other files and links

Fingerprint

Cite this