Bernardo, G., Gaspar, H., Pérez, G.E. et al. (6 more authors) (2020) Impact of 1,8-diiodooctane on the morphology of organic photovoltaic (OPV) devices – A Small Angle Neutron Scattering (SANS) study. Polymer Testing, 82. 106305. ISSN 0142-9418
Abstract
The impact of the additive 1,8-diiodooctane on the morphology of bulk-heterojunction solar cells based on the systems P3HT:PC71BM, PTB7:PC71BM and PTB7-Th:PC71BM is studied using a combination of Small Angle Neutron Scattering (SANS) and Atomic Force Microscopy (AFM). The results clearly show that while in the P3HT:PC71BM system, the additive DIO promotes a slight coarsening of the phase domains (type I additive), in the systems PTB7:PC71BM and PTB7-Th:PC71BM, DIO promotes a large decrease in the size of the phase domains (type II additive). SANS is demonstrated as being particularly useful at detecting the minor morphological changes observed in the P3HT:PC71BM system, which can be hardly seen in AFM. This work illustrates how SANS complements AFM and both techniques when used together provide a deeper insight into the nanoscale structure in thin organic photovoltaic (OPV) device films.
Metadata
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Copyright, Publisher and Additional Information: | © 2019 Elsevier. | ||||
Dates: |
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
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Funding Information: |
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 07 May 2020 08:19 | ||||
Last Modified: | 07 May 2020 08:19 | ||||
Status: | Published | ||||
Publisher: | Elsevier | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1016/j.polymertesting.2019.106305 | ||||
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