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

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

Collections

University of St Andrews Research

URI

http://hdl.handle.net/10023/12651