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An electrode design rule for organic photovoltaics elucidated using a low surface area electrode
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Dabera, Dinesha, Lee, Jaemin and Hatton, Ross A. (2019) An electrode design rule for organic photovoltaics elucidated using a low surface area electrode. Advanced Functional Materials . 1904749. doi:10.1002/adfm.201904749 ISSN 1616-301X.
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Official URL: https://doi.org/10.1002/adfm.201904749
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, we show 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 band gap insulating matrix.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||||
Journal or Publication Title: | Advanced Functional Materials | ||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||
ISSN: | 1616-301X | ||||||
Official Date: | 11 September 2019 | ||||||
Dates: |
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Article Number: | 1904749 | ||||||
DOI: | 10.1002/adfm.201904749 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Reuse Statement (publisher, data, author rights): | "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, 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." | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
RIOXX Funder/Project Grant: |
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