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Exciton diffusion length and charge extraction yield in organic bilayer solar cells

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Date
28/03/2017
Author
Siegmund, Bernhard
Sajjad, Muhammad Tariq
Widmer, Johannes
Ray, Debdutta
Koerner, Christian
Riede, Moritz
Leo, Karl
Samuel, Ifor David William
Vandewal, Koen
Funder
EPSRC
European Research Council
EPSRC
Grant ID
ep/l017008/1
EP/K031252/1
Keywords
Exciton diffusion length
Charge carrier extraction
Organic photovoltaics
Bilayer
Photocurrent modelling
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
DAS
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Abstract
A method for resolving the diffusion length of excitons and the extraction yield of charge carriers is presented based on the performance of organic bilayer solar cells and careful modeling. The technique uses a simultaneous variation of the absorber thickness and the excitation wavelength. Rigorously differing solar cell structures as well as independent photoluminescence quenching measurements give consistent results.
Citation
Siegmund , B , Sajjad , M T , Widmer , J , Ray , D , Koerner , C , Riede , M , Leo , K , Samuel , I D W & Vandewal , K 2017 , ' Exciton diffusion length and charge extraction yield in organic bilayer solar cells ' , Advanced Materials , vol. 29 , no. 12 , 1604424 . https://doi.org/10.1002/adma.201604424
Publication
Advanced Materials
Status
Peer reviewed
DOI
https://doi.org/10.1002/adma.201604424
ISSN
0935-9648
Type
Journal article
Rights
© 2017, Wiley-VCH, Verlag GmbH & Co, KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at http://onlinelibrary.wiley.com/ / https://doi.org/10.1002/adma.201604424
Description
The authors thank the German BMBF for funding within the scope of the projects InnoProfile 2.2 (03IPT602X) and MEDOS (03EK3503A) as well as the European Commission within the scope of the Career Integration Grant (FP7, MSCA, 630864). I.D.W.S. and M.T.S. acknowledge support from the European Research Council (grant number 321305) and from EPSRC (grant number EP/L017008/1). I.D.W.S. also acknowledges a Royal Society Wolfson Research Merit Award. K.L. is a fellow of the Canadian Institute for Advanced Research (CIFAR). The research data supporting this publication can be accessed at https://doi.org/10.17630/af263bfb-620c-40a8-9929-86658e5187d3
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/12651

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