Professor Chris Groves chris.groves@durham.ac.uk
Professor
Monte Carlo modeling of geminate recombination in polymer-polymer photovoltaic devices
Groves, C.; Marsh, R.A.; Greenham, N.C.
Authors
R.A. Marsh
N.C. Greenham
Abstract
A Monte Carlo model is used to examine geminate pair dissociation in polymer-polymer photovoltaic devices. It is found that increasing one or both carrier mobilities aids geminate separation yield ηGS particularly at low fields. This, in turn, leads to improved maximum power output from polymer-polymer blend photovoltaics, even when carrier mobilities are unbalanced by a factor of 10. The dynamic behaviors of geminate charges that eventually separate and recombine are examined for the first time. It is shown that geminate pairs in a bilayer become effectively free when separated by ∼4nm, which is far smaller than the thermal capture radius of 16nm here. This may lead one to expect that ηGS would not be limited by the separation allowed by the morphology once the domain size has increased above 4nm. In fact it is found that ηGS in a blend improves continuously as the average domain size increases from 4to16nm. We show that although a small degree of separation may be available in a blend, the limited number of possible routes to further separation makes charge pairs in blends more susceptible to recombination than charge pairs in a bilayer.
Citation
Groves, C., Marsh, R., & Greenham, N. (2008). Monte Carlo modeling of geminate recombination in polymer-polymer photovoltaic devices. The Journal of Chemical Physics, 129(11), Article 114903. https://doi.org/10.1063/1.2977992
Journal Article Type | Article |
---|---|
Publication Date | Sep 17, 2008 |
Deposit Date | Apr 3, 2014 |
Publicly Available Date | Mar 29, 2024 |
Journal | Journal of Chemical Physics |
Print ISSN | 0021-9606 |
Electronic ISSN | 1089-7690 |
Publisher | American Institute of Physics |
Peer Reviewed | Peer Reviewed |
Volume | 129 |
Issue | 11 |
Article Number | 114903 |
DOI | https://doi.org/10.1063/1.2977992 |
Keywords | Pair dissociation, Solar-cells, Separation, Mechanism, Blends. |
Files
Published Journal Article
(299 Kb)
PDF
Copyright Statement
© 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics 129, 114903 (2008); doi: 10.1063/1.2977992
and may be found at http://scitation.aip.org/content/aip/journal/jcp/129/11/10.1063/1.2977992
You might also like
Decarbonising electrical grids using photovoltaics with enhanced capacity factors
(2023)
Journal Article
Modelling the effect of dipole ordering on charge-carrier mobility in organic semiconductors
(2023)
Journal Article
Towards Intelligently Designed Evolvable Processors
(2022)
Journal Article
Single event burnout sensitivity of SiC and Si
(2022)
Journal Article
Enhanced Methods for Evolution in-Materio Processors
(2022)
Conference Proceeding
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search