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PEDOT:PSS/cellulose nanofibril dynamics in dependence of humidity and temperature in conductive, flexible films
Abstract: Poly(3,4-ethylenedioxythiophene)(styrenesulfonate) (PEDOT:PSS) is a conductive polymer widely used in flexible electronics and energy devices such as batteries and solar cells. However, its sensitivity to environmental factors such as humidity and temperature poses challenges for long-term performance. Embedding PEDOT:PSS in cellulose nanofibrils (CNF) matrices has been shown to improve mechanical stability and reduce film degradation. In a recent study, we investigate the dynamic behavior of PEDOT:PSS/CNF films under varying humidity (5% and 90%) and temperature conditions (20°C to 70°C) using quasi-elastic neutron scattering (QENS). By examining the diffusive motion of PEDOT and CNF at the nanoscale, we aim to gain deeper insights into how water dynamics and temperature influence the film's morphology and, consequently, its conductivity. Understanding these dynamics is critical for optimizing the material?s performance in real-world applications. Our findings may contribute to identifying the "sweet spot" for hydration water content, balancing conductivity and mechanical integrity, which could further enhance the design of soft, flexible, and conductive films for industrial applications.
Principal Investigator: Dr Lucas Kreuzer
Experimenter: Miss Maria Sol Malizia
Experimenter: Professor Daniel Söderberg
Experimenter: Professor Stephan Roth
Experimenter: Ms Meriem Nesrine Boudjenane
Local Contact: Dr Mona Sarter
Experimenter: Dr Marcell Wolf
Experimenter: Ms Ramsha Wasi Khan
Experimenter: Mr Christian Wögerbauer
DOI: 10.5286/ISIS.E.RB2510330
ISIS Experiment Number: RB2510330
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2510330-1 | IRIS | 08 August 2028 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
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Data Citation
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[author], [date], [title], [publisher],
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Dr Lucas Kreuzer et al; (2026): PEDOT:PSS/cellulose nanofibril dynamics in dependence of humidity and temperature in conductive, flexible films, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510330
Data is released under the CC-BY-4.0 license.