Determining exciton bandwidth and film microstructure in polythiophene films using linear absorption spectroscopy
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Absorption spectroscopy of polythiophene film microstructure; materials physics.
The work studies polymer film structure and spectroscopy rather than research methods.
Materials physics of polythiophene film microstructure; domain science, not metaresearch.
Abstract
We analyze the linear absorption spectrum of regioregular poly(3-hexylthiophene) films spun from a variety of solvents to probe directly the film microstructure and how it depends on processing conditions. We estimate the exciton bandwidth and the percentage of the film composed of aggregates quantitatively using a weakly interacting H-aggregate model. This provides a description of the degree and quality of crystallites within the film and is in turn correlated with thin-film field-effect transistor characteristics. © 2009 American Institute of Physics.
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The record
- Venue
- TUScholarShare (Temple University)
- Topic
- Organic Electronics and Photovoltaics
- Field
- Engineering
- Canadian institutions
- Université de MontréalRegroupement Québécois sur les Matériaux de Pointe
- Funders
- —
- Keywords
- PolythiopheneExcitonMaterials scienceMicrostructureThin filmAbsorption spectroscopyCrystalliteSpectroscopyAbsorption (acoustics)OptoelectronicsChemical engineeringChemical physicsOpticsNanotechnologyPolymerCondensed matter physicsComposite materialChemistryConductive polymerPhysics
- Has abstract in OpenAlex
- yes