A.T. Williams
Characterisation of Charge Conduction Networks in Poly(3-hexylthiophene)/Polystyrene Blends using Noise Spectroscopy
Williams, A.T.; Farrar, P.; Gallant, A.J.; Atkinson, D.; Groves, C.
Authors
P. Farrar
Professor Andrew Gallant a.j.gallant@durham.ac.uk
Professor
Professor Del Atkinson del.atkinson@durham.ac.uk
Professor
Professor Chris Groves chris.groves@durham.ac.uk
Professor
Abstract
1/f noise spectroscopy is used to investigate charge conduction networks within polymer blend space-charge-limited diodes (SCLDs) fabricated from regioregular poly(3-hexylthiophene) (P3HT) and either isotactic-polystyrene (i-PS) or amorphous-polystyrene (a-PS). Conducting AFM measurements showed that i-PS blends have heterogeneous conduction characterised by current ‘hotspots’, whereas a-PS blends showed homogeneous conduction. The difference in conducting networks between blends was clearly revealed when examining the noise spectra for the range of blend devices. Furthermore, the shape of the noise spectra suggested that as the blend composition changed, the charges sampled differing breadths of the density of states. These data suggest that noise measurements can be used as an informative technique to electrically characterise the effects of blend morphology and its effects within polymer electronic devices.
Citation
Williams, A., Farrar, P., Gallant, A., Atkinson, D., & Groves, C. (2014). Characterisation of Charge Conduction Networks in Poly(3-hexylthiophene)/Polystyrene Blends using Noise Spectroscopy. Journal of Materials Chemistry C Materials for optical and electronic devices, 2(9), 1742-1748. https://doi.org/10.1039/c3tc31849d
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 15, 2013 |
Online Publication Date | Jan 22, 2014 |
Publication Date | Mar 1, 2014 |
Deposit Date | Sep 18, 2013 |
Publicly Available Date | Mar 29, 2024 |
Journal | Journal of Materials Chemistry C Materials for optical and electronic devices |
Print ISSN | 2050-7526 |
Electronic ISSN | 2050-7534 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 2 |
Issue | 9 |
Pages | 1742-1748 |
DOI | https://doi.org/10.1039/c3tc31849d |
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
Copyright Statement
Advance online version Open Access Article. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Published Journal Article
(703 Kb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
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