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Dynamics of photogenerated polarons and polaron pairs in P3HT thin films
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SYSNO ASEP 0473851 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dynamics of photogenerated polarons and polaron pairs in P3HT thin films Author(s) Menšík, Miroslav (UMCH-V) RID
Pfleger, Jiří (UMCH-V) RID
Toman, Petr (UMCH-V) RID, ORCIDSource Title Chemical Physics Letters. - : Elsevier - ISSN 0009-2614
Roč. 677, 1 June (2017), s. 87-91Number of pages 5 s. Language eng - English Country NL - Netherlands Keywords poly(3-hexyl thiophene) ; transient absorption spectroscopy ; polaron and polaron pairs Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects LO1507 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UMCH-V - RVO:61389013 UT WOS 000401389400015 EID SCOPUS 85017181887 DOI 10.1016/j.cplett.2017.03.082 Annotation On the basis of the analysis of the experimental data of the transient absorption spectroscopy of thin films of regioregular poly(3-hexyl thiophene) we suggest a mechanism of the polaron pairs decay based on the coherent up and down conversion cycling between hot polaron pairs and free polarons. Compared to previously adopted models, based on single molecular processes or bimolecular collisions, the suggested model reproduced well both the polaron pairs and polaron population kinetics at short time after photoexcitation. For longer times, when the polaron pairs are already thermalized, they decay via 1-D diffusion limited bi-molecular collision processes. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2018
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