Impact of the glass transition on exciton dynamics in polymer thin films


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EHRENREICH, Philipp, Daniel PROEPPER, Alexander GRAF, Stefan JORES, Alexander V. BORIS, Lukas SCHMIDT-MENDE, 2017. Impact of the glass transition on exciton dynamics in polymer thin films. In: Physical Review B. 96(19), 195204. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.96.195204

@article{Ehrenreich2017Impac-40979, title={Impact of the glass transition on exciton dynamics in polymer thin films}, year={2017}, doi={10.1103/PhysRevB.96.195204}, number={19}, volume={96}, issn={2469-9950}, journal={Physical Review B}, author={Ehrenreich, Philipp and Proepper, Daniel and Graf, Alexander and Jores, Stefan and Boris, Alexander V. and Schmidt-Mende, Lukas}, note={Article Number: 195204} }

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dc:contributor>Jores, Stefan</dc:contributor> <dcterms:title>Impact of the glass transition on exciton dynamics in polymer thin films</dcterms:title> <bibo:uri rdf:resource=""/> <dcterms:available rdf:datatype="">2017-12-20T10:18:01Z</dcterms:available> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Graf, Alexander</dc:contributor> <dc:creator>Jores, Stefan</dc:creator> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:date rdf:datatype="">2017-12-20T10:18:01Z</dc:date> <dcterms:isPartOf rdf:resource=""/> <dc:contributor>Ehrenreich, Philipp</dc:contributor> <dcterms:issued>2017</dcterms:issued> <dc:creator>Boris, Alexander V.</dc:creator> <dc:creator>Proepper, Daniel</dc:creator> <dc:contributor>Boris, Alexander V.</dc:contributor> <dcterms:abstract xml:lang="eng">In the development of organic electronics, unlimited design possibilities of conjugated polymers offer a wide variety of mechanical and electronic properties. Thereby, it is crucially important to reveal universal physical characteristics that allow efficient and forward developments of new chemical compounds. In particular for organic solar cells, a deeper understanding of exciton dynamics in polymer films can help to improve the charge generation process further. For this purpose, poly(3-hexylthiophene) (P3HT) is commonly used as a model system, although exciton decay kinetics have found different interpretations. Using temperature-dependent time-resolved photoluminescence spectroscopy in combination with low-temperature spectroscopic ellipsometry, we can show that P3HT is indeed a model system in which excitons follow a simple diffusion/hopping model. Based on our results we can exclude the relevance of hot-exciton emission as well as a dynamic torsional relaxation upon photoexcitation on a ps time scale. Instead, we depict the glass transition temperature of polymers to strongly affect exciton dynamics.</dcterms:abstract> <dc:creator>Ehrenreich, Philipp</dc:creator> <dc:creator>Schmidt-Mende, Lukas</dc:creator> <dspace:isPartOfCollection rdf:resource=""/> <dc:contributor>Schmidt-Mende, Lukas</dc:contributor> <dc:contributor>Proepper, Daniel</dc:contributor> <dc:language>eng</dc:language> <dc:creator>Graf, Alexander</dc:creator> </rdf:Description> </rdf:RDF>

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