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Charge transport in nanostructured materials for solar energy conversion studied by time-resolved terahertz spectroscopy
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SYSNO ASEP 0350339 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Charge transport in nanostructured materials for solar energy conversion studied by time-resolved terahertz spectroscopy Author(s) Němec, Hynek (FZU-D) RID, ORCID, SAI
Kužel, Petr (FZU-D) RID, ORCID, SAI
Sundström, V. (SE)Source Title Journal of Photochemistry and Photobiology A-Chemistry. - : Elsevier - ISSN 1010-6030
Roč. 215, 2-3 (2010), s. 123-139Number of pages 17 s. Language eng - English Country CH - Switzerland Keywords time-resolved terahertz spectroscopy ; ultrafast dynamics ; bulk heterojunction ; semiconductor nanostructures ; transport ; mobility Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GP202/09/P099 GA ČR - Czech Science Foundation (CSF) IAA100100902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) LC512 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000283630200001 DOI 10.1016/j.jphotochem.2010.08.006 Annotation Spectra of far-infrared conductivity contain useful information on charge transport at nanoscopic length scales. However, decrypting the mechanisms and parameters of charge transport from the measured spectra is a complex task in nanostructured systems: in particular, the conductivity is strongly influenced by charge carrier interaction with surfaces or interfaces between constituents of the composite material as well as by local field effects. Here we review our work on transient far-infrared conductivity in polymer:fullerene bulk heterojunctions and in bare and dye-sensitized semiconductor nanoparticles. Measurements performed by time-resolved terahertz spectroscopy are complemented by Monte-Carlo calculations which clearly link the charge transport properties and the terahertz conductivity spectra. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2011
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