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Terahertz spectroscopy of nanomaterials: a close look at charge-carrier transport
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SYSNO ASEP 0539812 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Terahertz spectroscopy of nanomaterials: a close look at charge-carrier transport Author(s) Kužel, Petr (FZU-D) RID, ORCID, SAI
Němec, Hynek (FZU-D) RID, ORCID, SAIArticle number 1900623 Source Title Advanced Optical Materials. - : Wiley - ISSN 2195-1071
Roč. 8, č. 3 (2020), s. 1-23Number of pages 23 s. Language eng - English Country DE - Germany Keywords terahertz spectroscopy ; photoconductivity ; time-resolved terahertz Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA17-03662S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000512070700005 EID SCOPUS 85067016419 DOI 10.1002/adom.201900623 Annotation Terahertz spectroscopy has been used for almost two decades for investigations of nanomaterials, including nanocrystals, nanoparticles, nanowires, nanotubes or 2D crystals. Its great importance stems from the fact that it is a noncontact method and, owing to its high frequency and broadband character, it is capable of characterizing charge transport properties within individual nano-objects but also among them. In addition, probing of photo- initiated ultrafast charge dynamics is possible thanks to the sub-picosecond time resolution. Despite this unprecedented potential, the interpretation of the measured terahertz conductivity spectra in many materials is still intensively debated. Herein is presented a review of the experiments performed on nanostructures of conventional semiconductors and on carbon nanomaterials (graphene and carbon nanotubes) during the past decade. The state of the art of the theoretical formalism is provided and discussed, including the intrinsic response, as well as the role of inherent heterogeneity and of the experimental conditions.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1002/adom.201900623
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