Dabera, GDMR, Lee, J orcid.org/0000-0002-7768-7061 and Hatton, RA (2019) An Electrode Design Rule for Organic Photovoltaics Elucidated Using a Low Surface Area Electrode. Advanced Functional Materials, 29 (44). 1904749. ISSN 1616-301X
Abstract
It is widely considered that charge carrier extraction in bulk‐heterojunction organic photovoltaics (BHJ OPVs) is most efficient when the area of contact between the semiconductor layers and the electrodes is maximized and the electrodes are electrically homogeneous. Herein, it is shown that ≈99% of the electrode surface can in fact be insulating without degrading the efficiency of charge carrier extraction, provided the spacing of the conducting areas is less than or equal to twice the optimal thickness of the BHJ layer. This striking result is demonstrated for BHJ OPVs with both conventional and inverted device architectures using two different types of BHJ OPVs, namely, PCDTBT:PC70BM and the ternary blend PBDB‐T:ITIC‐m:PC70BM. This finding opens the door to the use of a large pallet of materials for optical spacers and charge transport layers, based on a low density of conducting particles embedded in a wide bandgap insulating matrix.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Dabera, G. D. M. R., Lee, J., Hatton, R. A., An Electrode Design Rule for Organic Photovoltaics Elucidated Using a Low Surface Area Electrode. Adv. Funct. Mater. 2019, 29, 1904749., which has been published in final form at https://doi.org/10.1002/adfm.201904749. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. |
Keywords: | gold nanoparticle; nanoparticle electrode; organic photovoltaic; organic solar cell; polymer solar cell; transparent electrode |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Future Manufacturing Processes (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Aug 2020 11:45 |
Last Modified: | 11 Sep 2020 00:39 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/adfm.201904749 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164285 |