A5088485368- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- 2D Materials and Applications
- Thermal properties of materials
- Inorganic Chemistry and Materials
- Conducting polymers and applications
- Advanced Semiconductor Detectors and Materials
- Thermal Radiation and Cooling Technologies
- Heusler alloys: electronic and magnetic properties
- Transition Metal Oxide Nanomaterials
- Thermal Expansion and Ionic Conductivity
- Semiconductor materials and interfaces
- Catalytic Processes in Materials Science
- Semiconductor Quantum Structures and Devices
- Advanced Sensor and Energy Harvesting Materials
- Crystal Structures and Properties
- Human-Automation Interaction and Safety
- IoT and GPS-based Vehicle Safety Systems
- Intermetallics and Advanced Alloy Properties
- Flame retardant materials and properties
- Perovskite Materials and Applications
- Silicon Nanostructures and Photoluminescence
- Gas Sensing Nanomaterials and Sensors
- Topological Materials and Phenomena
- High-Temperature Coating Behaviors
Centre National de la Recherche Scientifique
2020-2023
Institut Jean Lamour
2019-2023
Université de Lorraine
2019-2023
SRM Institute of Science and Technology
2018
Shizuoka University
2016-2017
The growth of large single crystals InTe enables the first detailed study its basic thermoelectric properties.
Semi-crystalline polypyrrole (PPy) nanotubes were synthesized through a chemical polymerization route using methyl orange-ferric chloride (MO-FeCl3) as template for growth. The thermoelectric properties of these PPy have been studied in the temperature range 300–380 K after treatment with various dopants such hydrochloric acid (HCl), p-toluene-sulphonic monohydrate (ToS), and tetrabutyl ammonium hexaflurophosphate (PF6). It has observed that affect electrical thermal transport different...
In substitution in Sn<sub>1.03</sub>Te forms a resonant level that strongly affects the thermoelectric properties at high temperatures.
The authors explore the origin of low lattice thermal conductivity in chalcogenide InTe using dynamics calculations and inelastic neutron scattering experiments on a Bridgman-grown single crystal.
A novel method which allows to distinguish between resonant and non-resonant impurities in thermoelectric semiconductors is presented.
Pb alloying in InTe leads to decreased hole concentration and lattice thermal conductivity, hence, higher thermoelectric performance.
Rutile is the most common and stable polymorph form of titanium oxide TiO2 at all temperatures. The doping rutile with a small amount niobium reknown for being responsible large increase electrical conductivity by several orders magnitude, broadening its technological interest towards new emerging fields such as thermoelectric conversion waste heat. electronic conduction has been found to be polaronic nature strongly localized charges around Ti3+ centers while, on other side, relatively high...
Because the binary chalcogenide SnTe is an interesting Pb-free alternative to state-of-the-art thermoelectric material PbTe, significant efforts were devoted optimization of its properties over last few years. Here, we show that saturation-annealing treatments performed at 823, 873 or 973 K under Sn-rich conditions provide a successful strategy prepare polycrystalline samples with controlled concentration Sn vacancies. Both scanning transmission electron microscopy and Mössbauer spectroscopy...
Normal-state transport properties (2--300 K) of the polycrystalline series ${\mathrm{Sn}}_{1.03\ensuremath{-}\ensuremath{\delta}\ensuremath{-}x}{\mathrm{In}}_{x}\mathrm{Te} (0\ensuremath{\le}x\ensuremath{\le}0.07$; $\ensuremath{\delta}\ensuremath{\le}0.0025$) were investigated by means electrical resistivity, thermopower, Hall effect, and thermal conductivity measurements. The distortion valence-band structure In-induced resonant level (RL) has a profound influence on evolution normal-state...
Two novel Mo-based cluster compounds Cu 3 M 2 Mo 15 Se 19 (M = In, K) show highly-disordered sublattice, giving rise to very low lattice thermal conductivity and interesting thermoelectric performance above 1000 K.
We show how the balance between resonant level and band convergence induced by In Mn, respectivley, in Sn 1− δ Te can be advantageously tailored to achieve high thermoelectric performance.
Achieving a precise control of defects in chalcogenide semiconductors is paramount to optimizing their thermoelectric properties. Recently, p-type InTe has emerged as potential candidate for applications power generation, mainly due its extremely low lattice thermal conductivity. Here, we show that the concentration inherent In vacancies both single-crystalline and polycrystalline samples can be successfully controlled through saturation annealing. This process, performed on In-rich Te-rich...
The n-type chalcogenide Bi<sub>8</sub>Se<sub>7</sub> is the parent compound of a new class highly-efficient thermoelectric materials for near-room-temperature applications.
We report on the synthesis, characterizations, and high-temperature thermoelectric properties of polycrystalline samples Bi2−xPbxTe2Se for 0 ≤ x 0.03. Powder x-ray diffraction scanning electron microscopy confirm successful insertion Pb into hexagonal unit cell tetradymite Bi2Te2Se. acts as an acceptor-like impurity, gradually shifting lightly doped, n-type electronic Bi2Te2Se toward heavily p-type in Pb-containing samples, which is additionally confirmed by structure calculations. The...
Microstructure and physico-chemical properties of a thermally-sprayed coating depend on the dynamics particles interacting with spray jet. Whatever process (plasma, flame, etc.), porosity phase composition can vary significantly, thereby strongly influencing transport properties. In this study, different plasma processes (APS VPS) were investigated to n- p-type half-Heusler powders. Hf20Zr75Ti05CoSb80Sn20 (p-type) Hf60Zr40NiSn98Sb02 (n-type) powders selected due their good thermoelectric...
Vehicle collision leading to life threatening accidents is a common problem which incrementing noticeably. This necessitated the need for Driver Assistance Systems (DAS) helps drivers sense nearby obstacles and drive safely. However, it’s inefficiency in unfavorable weather conditions, overcrowded roads, low signal penetration rates India posed many challenges during implementation. In this paper, we present portable System that uses augmented reality working. The headset model comprises of...
Abstract Microstructure and physicochemical properties of a thermally sprayed coating depend on the dynamics particles interacting with spray jet. This is especially case for electrical properties. In this study, different spraying processes were used to p-type n-type half-Heusler powders. Thermoelectric powders, Hf20Zr75Ti05CoSb80Sn20 (p-type) Hf60Zr40NiSn98Sb02 (n-type), selected due their interesting The evaluated based composition mechanical property measurements. only coatings practical...