ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Mixing in non-fullerene acceptor (NFA)/polymer blends; Understanding equilibrium and non-equilibrium behaviour
Abstract: Despite rapid increases in efficiency over the last five years or so, organic photovoltaics (OPVs) fabricated using non-fullerene electron acceptors (NFAs), face challenges to commercialisation due to efficiency reduction during use. A key aspect of this is the evolution of morphology and interfacial structure during operation; eg changes to the volumes, compositions and connectivity of mixed acceptor/donor phases (domains) at elevated temperatures. In recent years, we have developed a methodology, using in-situ neutron reflectometry, to explore phase composition, phase volume and interfacial width during thermal annealing in model fullerene/polymer thin-film samples, and examine their behaviour within the framework of equilibrium theories (Flory-Huggins, self-consistent field-theory). We now seek to apply this to recently developed NFA/polymer systems, and thoroughly evaluate key aspects of equilibrium behaviour; i) convergence to a global minimum from different starting points, ii) (thermal) reversibility and iii) MW dependence. The aim of our study is to complement device-optimisation and stability strategies in these commercially-relevant materials, by thoroughly investigating fundamental behaviour in model thin-film bilayers.
Principal Investigator: Dr Anthony Higgins
Experimenter: Mr Oliver Anyanor
Experimenter: Professor Joao Cabral
Local Contact: Dr Stephen Hall
Experimenter: Dr Andrew Parnell
DOI: 10.5286/ISIS.E.RB2410032
ISIS Experiment Number: RB2410032
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2410032-1 | OFFSPEC | 23 July 2027 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Dr Anthony Higgins et al; (2024): Mixing in non-fullerene acceptor (NFA)/polymer blends; Understanding equilibrium and non-equilibrium behaviour, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2410032
Data is released under the CC-BY-4.0 license.
