Search Results - "Němec, Hynek"

Terahertz Spectroscopy of Nanomaterials: a Close Look at Charge‐Carrier Transport by Kužel, Petr, Němec, Hynek

“…Terahertz spectroscopy has been used for almost two decades for investigations of nanomaterials, including nanocrystals, nanoparticles, nanowires, nanotubes or…”
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Water-Dispersible Small Monodisperse Electrically Conducting Antimony Doped Tin Oxide Nanoparticles by Peters, Kristina, Zeller, Patrick, Stefanic, Goran, Skoromets, Volodymyr, Němec, Hynek, Kužel, Petr, Fattakhova-Rohlfing, Dina

“…We describe the fabrication of crystalline electrically conducting antimony-doped tin oxide (ATO) nanoparticles highly dispersible in polar solvents such as…”
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Ultrafast Long-Distance Electron-Hole Plasma Expansion in GaAs Mediated by Stimulated Emission and Reabsorption of Photons by Troha, Tinkara, Klimovič, Filip, Ostatnický, Tomáš, Kadlec, Filip, Kužel, Petr, Němec, Hynek

“…Electron-hole plasma expansion with velocities exceeding c/50 and lasting over 10 ps at 300 K was evidenced by time-resolved terahertz spectroscopy. This…”
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Charge transport in nanostructured materials for solar energy conversion studied by time-resolved terahertz spectroscopy by Nemec, Hynek, Kuzel, Petr, Sundström, Villy

“…Spectra of far-infrared conductivity contain useful information on charge transport at nanoscopic length scales. However, decrypting the mechanisms and…”
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Far-infrared response of free charge carriers localized in semiconductor nanoparticles by Nemec, Hynek, Kuzel, Petr, Sundström, Villy

“…A Monte Carlo method is employed to calculate the dynamical conductivity in the terahertz range of free charge carriers localized in semiconductor…”
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Nanoscale terahertz conductivity and ultrafast dynamics of terahertz plasmons in periodic arrays of epitaxial graphene nanoribbons by Singh, Arvind, Němec, Hynek, Kunc, Jan, Kužel, Petr

“…The dynamics of plasmons in nanoribbons of (hydrogen intercalated) quasi-freestanding single-layer graphene is studied by terahertz spectroscopy both in the…”
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Photon-assisted ultrafast electron–hole plasma expansion in direct band semiconductors by Troha, Tinkara, Klimovič, Filip, Ostatnický, Tomáš, Němec, Hynek, Kužel, Petr

“…Time-resolved terahertz spectroscopy is used to investigate formation and ultrafast long-distance propagation of electron–hole plasma in strongly photoexcited…”
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Electron and Hole Contributions to the Terahertz Photoconductivity of a Conjugated Polymer:Fullerene Blend Identified by Ponseca, Carlito S, Němec, Hynek, Vukmirović, Nenad, Fusco, Sandra, Wang, Ergang, Andersson, Mats R, Chabera, Pavel, Yartsev, Arkady, Sundström, Villy

“…Time-resolved terahertz spectroscopy was employed for the investigation of charge-transport dynamics in benzothiadiazolo-dithiophene polyfluorene…”
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Charge Transport in DNA Oligonucleotides with Various Base-Pairing Patterns by Kratochvílová, Irena, Todorciuc, Tatiana, Král, Karel, Němec, Hynek, Bunček, Martin, Šebera, Jakub, Záliš, Stanislav, Vokáčová, Zuzana, Sychrovský, Vladimír, Bednárová, Lucie, Mojzeš, Peter, Schneider, Bohdan

“…We combined various experimental (scanning tunneling microscopy and Raman spectroscopy) and theoretical (density functional theory and molecular dynamics)…”
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Ultrafast conductivity in a low-band-gap polyphenylene and fullerene blend studied by terahertz spectroscopy by Němec, Hynek, Nienhuys, Han-Kwang, Perzon, Erik, Zhang, Fengling, Inganäs, Olle, Kužel, Petr, Sundström, Villy

“…Time-resolved terahertz spectroscopy and Monte Carlo simulations of charge-carrier motion are used to investigate photoinduced transient conductivity in a…”
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Charge Carrier Dynamics in Alternating Polyfluorene Copolymer:Fullerene Blends Probed by Terahertz Spectroscopy by Němec, Hynek, Nienhuys, Han-Kwang, Zhang, Fengling, Inganäs, Olle, Yartsev, Arkady, Sundström, Villy

“…Time-resolved terahertz spectroscopy is used for investigation of photoinduced charge carrier dynamics in blends of a polyfluorene copolymer…”
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Calculation of terahertz conductivity spectra in semiconductors with nanoscale modulation by Mrozek, Jan, Němec, Hynek

“…Monte Carlo simulations are employed to calculate terahertz conductivity of charge carriers in a potential with periodic modulation on the nanoscale. The…”
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Effects of depolarization fields on transient terahertz spectra of nanostructured materials by Nemec, Hynek, Zajac, Vit, Kuzel, Petr

“…Analysis of the relationship between the microscopic conductivity, morphology represented by percolation degree and terahertz transmission spectra allowed us…”
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Charge Transport in Single‐Crystalline GaAs Nanobars: Impact of Band Bending Revealed by Terahertz Spectroscopy by Pushkarev, Vladimir, Němec, Hynek, Paingad, Vaisakh C., Maňák, Jan, Jurka, Vlastimil, Novák, Vít, Ostatnický, Tomáš, Kužel, Petr

“…Arrays of ultimate‐quality single‐crystalline GaAs nanobars are prepared via electron‐beam lithography in a molecular‐beam‐epitaxy‐grown GaAs layer transferred…”
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Insights into the Charge Carrier Terahertz Mobility in Polyfluorenes from Large-Scale Atomistic Simulations and Time-Resolved Terahertz Spectroscopy by Vukmirović, Nenad, Ponseca, Carlito S, Němec, Hynek, Yartsev, Arkady, Sundström, Villy

“…Multiscale atomistic simulations were used to understand the factors that determine the charge carrier mobility spectrum obtained from time-resolved terahertz…”
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Terahertz Depolarization Effects in Colloidal TiO2 Films Reveal Particle Morphology by Jensen, Søren A, Tielrooij, Klaas-Jan, Hendry, Euan, Bonn, Mischa, Rychetský, Ivan, Němec, Hynek

“…Films of colloidal TiO2 nanoparticles are widely used in photovoltaic and photocatalytic applications, and the nature of electrical conductivity in such…”
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Terahertz charge transport dynamics in 3D graphene networks with localization and band regimes by Kumar, Prabhat, Šilhavík, Martin, Parida, Manas R, N mec, Hynek, ervenka, Ji í, Ku el, Petr

“…Terahertz steady-state and time-resolved conductivity and permittivity spectra were measured in 3D graphene networks assembled in free-standing covalently…”
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Charge transport in anodic TiO2 nanotubes studied by terahertz spectroscopy by Krbal, Milos, Kucharik, Jiri, Sopha, Hanna, Nemec, Hynek, Macak, Jan M.

“…We report on the photoelectrochemical and terahertz measurements, of the charge transport properties of 1 μm thick self‐organized TiO2 nanotube layers,…”
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Charge Transport in Single‐Crystalline GaAs Nanobars: Impact of Band Bending Revealed by Terahertz Spectroscopy (Adv. Funct. Mater. 5/2022) by Pushkarev, Vladimir, Němec, Hynek, Paingad, Vaisakh C., Maňák, Jan, Jurka, Vlastimil, Novák, Vít, Ostatnický, Tomáš, Kužel, Petr

“…Charge Confinement Electron motion inside nanostructures is strongly influenced by the presence of surfaces. In article number 2107403, Petr Kužel and…”
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Tuning the Conduction Mechanism in Niobium-Doped Titania Nanoparticle Networks by Němec, Hynek, Mics, Zoltán, Kempa, Martin, Kužel, Petr, Hayden, Oliver, Liu, Yujing, Bein, Thomas, Fattakhova-Rohlfing, Dina

“…Networks of niobium-doped TiO2 anatase nanoparticles with variable doping concentrations were investigated by time-domain terahertz spectroscopy and microwave…”
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