A5051282258- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Rare-earth and actinide compounds
- Inorganic Chemistry and Materials
- Heusler alloys: electronic and magnetic properties
- Phase-change materials and chalcogenides
- Quantum Dots Synthesis And Properties
- Advanced Semiconductor Detectors and Materials
- X-ray Diffraction in Crystallography
- Crystal Structures and Properties
- Topological Materials and Phenomena
- Quantum, superfluid, helium dynamics
- Thermodynamic and Structural Properties of Metals and Alloys
- Cold Atom Physics and Bose-Einstein Condensates
- Mineralogy and Gemology Studies
- Thermal properties of materials
- Organic and Molecular Conductors Research
- Fuel Cells and Related Materials
- Thermal Expansion and Ionic Conductivity
- Semiconductor materials and interfaces
- Surface and Thin Film Phenomena
- Cultural Heritage Materials Analysis
- Metal-Organic Frameworks: Synthesis and Applications
- Solid-state spectroscopy and crystallography
- Chemical Synthesis and Characterization
University of Pardubice
2014-2024
Czech Geological Survey
2008-2013
Czech Academy of Sciences, Institute of Macromolecular Chemistry
2004-2010
Czech Academy of Sciences
1998
The development of intrinsic vacancies in SnSe single crystals was investigated as a function annealing temperature by means positron annihilation spectroscopy accompanied transport measurements. It has been demonstrated that two types are present single-crystalline SnSe. While Sn dominate the low-temperature region, Se and vacancy clusters govern high-temperature region. These findings supported theoretical calculations enabling direct detection quantification most favorable type vacancies....
Metal-organic frameworks (MOFs), owing to their unique architecture, attract consistent attention in the design of high-performance Li battery materials. Here, we report a new category ion-conducting crystalline materials for all-solid-state electrolytes based on an MIL53(Al) framework featuring superchaotropic metallacarborane (Li+CoD-) salt and present first quantitative data Li+ ion sites, local dynamics, chemical exchange, formation charge-transfer pathways. We used multinuclear...
Pb-doped Bi2Te3 single crystals with a Pb concentration of c = 0−9.4 × 1025 m−3 were prepared from the elements Bi, and Te 99.999% purity by means Bridgman method. Samples these characterized measurements Hall coefficient R H(B∥c), electrical conductivity σ⊥c Seebeck α(c⊥ΔT) over temperature range 90–420 K. It was found that impurities in behave as acceptors; some (40%) incorporated atoms are electrically inactive. This effect is explained model crystal lattice defects based on assumption...
Polycrystalline samples of composition CuIn1−xHgxTe2 (x = 0–0.21) were synthesized from elements 5N purity using a solid state reaction. The phase the products was verified by X-ray diffraction. Samples for transport property measurements prepared hot-pressing. characterized measurement electrical conductivity, Hall coefficient, Seebeck and thermal conductivity over temperature range 300–675 K. All show p-type conductivity. We discuss influence Hg substitution on free carrier concentration...
Metal-organic frameworks (MOFs) are attracting attention as potential proton conductors. There two main advantages of MOFs in this application: the possibility rational design and tuning properties clear conduction pathways given by their crystalline structure. We hereby present new MOF structures, ICR-10 ICR-11, based on tetratopic phosphinate ligands. The structures both were determined 3D electron diffraction. They crystallize P3̅ space group contain arrays parallel linear pores lined...
The properties of thin thermoelectric layers (about 60 nm in thickness) prepared by pulsed laser deposition are presented. Hot pressed targets were made from “middle” temperature range bulk materials with the potential high figure merit ZT. P-type and N-type Yb0.19Co4Sb12 Ce0.1Fe0.7Co3.3Sb12 targets, respectively. films deposited on quartz glass substrates using KrF excimer laser. individual applying different beam energy densities (2 or 3 J cm−2) at several substrate temperatures (200, 250,...
We performed ambivalent doping study on single crystals of two sets, $\mathrm{Sn}{\mathrm{Se}}_{1\ensuremath{-}x}{\mathrm{As}}_{x}$ and ${\mathrm{Sn}}_{1\ensuremath{-}x}{\mathrm{As}}_{x}\mathrm{Se}$, with the aim to explore interaction species intrinsic defects. found that As atoms substitute preferentially for Se in both sets forming extrinsic substitutional point defect ${\mathrm{As}}_{\mathrm{Se}}$. In first set, lowers concentration Sn vacancies, ${V}_{\mathrm{Sn}}$, by an order...