Dattani, R., Telling, M.T.F., Lopez, C.G. et al. (6 more authors) (2015) Rapid precipitation : an alternative to solvent casting for organic solar cells. ChemPhysChem, 16 (6). pp. 1231-1238. ISSN 1439-4235
Abstract
Rapid precipitation, immersion of a liquid formulation into a nonsolvent, is compared with drop casting for fabricating organic solar cells. Blends comprising poly‐3‐hexylthiophene (P3HT), phenyl‐C61‐butyric acid methyl ester (PCBM), and chlorobenzene were processed into bulk samples by using two distinct routes: rapid precipitation and drop casting. The resulting structure, phases, and crystallinity were analyzed by using small‐angle neutron scattering, X‐ray diffraction, differential scanning calorimetry, and muon spin resonance. Rapid precipitation was found to induce a finely structured phase separation between PCBM and P3HT, with 65 wt % crystallinity in the P3HT phase. In contrast, solvent casting resulted in a mixed PCBM/P3HT phase with only 43 wt % P3HT crystallinity. The structural advantages conferred by rapid precipitation were shown to persist following intense thermal treatments.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 WILEY‐VCH Verlag GmbH & Co. This is an author-produced version of a paper subsequently published in ChemPhysChem. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | crystal growth; organic solar cells; phase transitions; rapid precipitation; small-angle neutron scattering |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Nov 2019 16:01 |
Last Modified: | 09 Nov 2019 19:24 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/cphc.201402758 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:153129 |