0466134 - FZÚ 2017 RIV DE eng J - Článek v odborném periodiku
Krbal, M. - Kuchařík, Jiří - Sopha, H. - Němec, Hynek - Macák, J. M.
Charge transport in anodic TiO₂ nanotubes studied by terahertz spectroscopy.
Physica Status Solidi. Roč. 10, č. 9 (2016), s. 691-695. ISSN 1862-6254. E-ISSN 1862-6270
Grant CEP: GA ČR GA13-12386S
Institucionální podpora: RVO:68378271
Klíčová slova: terahertz spectroscopy * charge transport * TiO2 nanotubes
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.032, rok: 2016 ; AIS: 0.769, rok: 2016
DOI: https://doi.org/10.1002/pssr.201600179

We report on the photoelectrochemical and terahertz measurements, of the charge transport properties of 1 μm thick self-organized TiO2 nanotube layers, prepared by the anodization of titanium. We provide evidence regard-ing the complexity of electron transport, and dynamics in the nanotubes. Shortly after photoexcitation, charge mo-bilites in amorphous and crystalline nanotubes are similar, but still lower compared to the bulk anatase. The mobili-ty subsequently decreases due to trapping-detrapping processes. The recombination rate in anatase nanotubes is much slower than in the amorphous ones, enabling the material to reach an internal photon to electron conver-sion efficiency exceeding 60 %.
Trvalý link: http://hdl.handle.net/11104/0264534