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Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity

Dyfrig Môn, Anthony Higgins Orcid Logo, Philipp Gutfreund, David James

Journal of Materials Research, Pages: 1 - 11

Swansea University Author: Anthony Higgins Orcid Logo

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DOI (Published version): 10.1557/jmr.2017.59

Abstract

In situ and ex situ neutron reflectivity is used to characterize annealed regioregular-P3HT/PCBM bilayers. In situ annealing of a 20 nm PCBM/35 nm P3HT bilayer at 170 °C reveals rapid mixing of PCBM and P3HT to produce a polymer-rich layer that contains around 18–20% PCBM. Samples with three differe...

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Published in: Journal of Materials Research
ISSN: 0884-2914 2044-5326
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa31856
first_indexed 2017-02-03T20:54:52Z
last_indexed 2019-09-23T19:45:17Z
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spelling 2019-09-23T14:44:32.5957866 v2 31856 2017-02-03 Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity 4db715667aa7bdc04e87b3ab696d206a 0000-0003-2804-8164 Anthony Higgins Anthony Higgins true false 2017-02-03 EAAS In situ and ex situ neutron reflectivity is used to characterize annealed regioregular-P3HT/PCBM bilayers. In situ annealing of a 20 nm PCBM/35 nm P3HT bilayer at 170 °C reveals rapid mixing of PCBM and P3HT to produce a polymer-rich layer that contains around 18–20% PCBM. Samples with three different thicknesses of P3HT layer are ex situ annealed at 140 °C. This again reveals migration of PCBM into the P3HT and vice versa, with the polymer-rich layer in the 20 nm PCBM/35 nm P3HT sample containing 19% PCBM. Complete migration of the entire PCBM layer into the P3HT layer is observed for a 20 nm PCBM/80 nm P3HT bilayer. The robustness of fitted model composition profiles, in comparison with real-space imaging of sample surface morphology and previous work on annealed P3HT/PCBM bilayer compositions, is discussed in detail. Journal Article Journal of Materials Research 1 11 0884-2914 2044-5326 31 12 2017 2017-12-31 10.1557/jmr.2017.59 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University RCUK, EPSRC, EP/P505763/1 2019-09-23T14:44:32.5957866 2017-02-03T13:09:10.2944019 Faculty of Science and Engineering School of Engineering and Applied Sciences - Biomedical Engineering Dyfrig Môn 1 Anthony Higgins 0000-0003-2804-8164 2 Philipp Gutfreund 3 David James 4 0031856-07032017091618.pdf AMHiggins.pdf 2017-03-07T09:16:18.4000000 Output 684373 application/pdf Version of Record true 2017-03-07T00:00:00.0000000 This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence true eng
title Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
spellingShingle Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
Anthony Higgins
title_short Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
title_full Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
title_fullStr Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
title_full_unstemmed Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
title_sort Mixing in PCBM/P3HT bilayers, using in situ and ex situ neutron reflectivity
author_id_str_mv 4db715667aa7bdc04e87b3ab696d206a
author_id_fullname_str_mv 4db715667aa7bdc04e87b3ab696d206a_***_Anthony Higgins
author Anthony Higgins
author2 Dyfrig Môn
Anthony Higgins
Philipp Gutfreund
David James
format Journal article
container_title Journal of Materials Research
container_start_page 1
publishDate 2017
institution Swansea University
issn 0884-2914
2044-5326
doi_str_mv 10.1557/jmr.2017.59
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Biomedical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Biomedical Engineering
document_store_str 1
active_str 0
description In situ and ex situ neutron reflectivity is used to characterize annealed regioregular-P3HT/PCBM bilayers. In situ annealing of a 20 nm PCBM/35 nm P3HT bilayer at 170 °C reveals rapid mixing of PCBM and P3HT to produce a polymer-rich layer that contains around 18–20% PCBM. Samples with three different thicknesses of P3HT layer are ex situ annealed at 140 °C. This again reveals migration of PCBM into the P3HT and vice versa, with the polymer-rich layer in the 20 nm PCBM/35 nm P3HT sample containing 19% PCBM. Complete migration of the entire PCBM layer into the P3HT layer is observed for a 20 nm PCBM/80 nm P3HT bilayer. The robustness of fitted model composition profiles, in comparison with real-space imaging of sample surface morphology and previous work on annealed P3HT/PCBM bilayer compositions, is discussed in detail.
published_date 2017-12-31T19:10:33Z
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score 11.047609

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