Publication
Enhanced low-temperature thermoelectrical properties of BiTeCl grown by topotactic method
Publications associées (34)
Tailoring thermal properties of functional materials
Thermal conductivity (k) plays an essential role in functional devices. In some cases, high value is required to transfer heat efficiently. In others, low k assists in maintaining a temperature gradient necessary for device operation. It is profitable to d ...
EPFL2019The influence of the incommensurately modulated structure on the physical properties of Fe1.35Ge
László Forró, Alla Arakcheeva, Helmuth Berger, Philip Pattison, Krunoslav Prsa, Andrea Pisoni, Sergiy Katrych, Jacim Jacimovic
Single crystal growth by chemical vapour transport has resulted samples with Fe1.35Ge stoichiometry. Structural study has shown that the large number of vacancies introduces an incommensuately modulated structure. The electrical resistivity is in the 200 m ...
2019Doping effect on the thermoelectric transport properties of HfTe5
Jean-Philippe Ansermet, Haiming Yu, Junfeng Hu
We studied the influence of doping HfTe5 with 5% Ti on electric (resistivity and the Hall effect) and thermoelectric transport properties (the Seebeck coefficient, magneto-thermoelectric power, and Nernst effect). The properties of 5% Ti-doped HfTe5 do not ...
AMER INST PHYSICS2019A Fully Integrated 60 mV Cold-Start Circuit for Single Coil DC-DC Boost Converter for Thermoelectric Energy Harvesting
Maher Kayal, François Krummenacher, Mathieu Yves Hervé Coustans
Harvesting energy from ambient energy sources, such as thermal gradients is one solution to address the dramatic increase in energy consumption of personal electronics. While in the field, energy abundantly available in form of heat. The use of primary cel ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019Topological phonons and thermoelectricity in triple-point metals
Recently published discoveries of acoustic- and optical-mode inversion in the phonon spectrum of certain metals became the first realistic example of noninteracting topological bosonic excitations in existing materials. However, the observable physical and ...
AMER PHYSICAL SOC2018Efficient Photothermoelectric Conversion in Lateral Topological Insulator Heterojunctions
Tuning the electron and phonon transport properties of thermoelectric materials by nanostructuring has enabled improving their thermopower figure of merit. Three-dimensional topological insulators, including many bismuth chalcogenides, attract increasing a ...
Amer Chemical Soc2017Pressure-tuned Transport Properties of Novel Iron-based Superconductors and Topological Insulators
The majority of interactions in solids strongly depend on the interatomic distances. The application of pressure changes the lattice parameters and modifies the electronic and the phononic energy spectra of a material avoiding some of the undesirable effec ...
EPFL2016Harnessing Topological Band Effects in Bismuth Telluride Selenide for Large Enhancements in Thermoelectric Properties through Isovalent Doping
Klaus Kern, Marko Burghard, Pascal Gehring, Alexander Ronald Hoyer, Kristina Vaklinova
Dilute isovalent sulfur doping simultaneously increases electrical conductivity and Seebeck coefficient in Bi2Te2Se nanoplates, and bulk pellets made from them. This unusual trend at high electron concentrations is underpinned by multifold increases in ele ...
Wiley-V C H Verlag Gmbh2016The Role of Transport Agents in MoS2 Single Crystals
László Forró, Arnaud Magrez, Arnaud Walter, Helmuth Berger, Bálint Náfrádi, Andrea Pisoni, Jacim Jacimovic
We report resistivity, thermoelectric power, and thermal conductivity of MoS2 single crystals prepared by the chemical vapor transport (CVT) method using I-2, Br-2, and TeCl4 as transport agents. The material presents low-lying donor and acceptor levels, w ...
Amer Chemical Soc2015Tuning of the Thermoelectric Figure of Merit of CH3NH3MI3 (M=Pb,Sn) Photovoltaic Perovskites
László Forró, Davor Pavuna, Endre Horvath, Xavier François Mettan, Bálint Náfrádi, Andrea Pisoni, Massimo Spina, Péter Krisztián Matus, Riccardo Pisoni
The hybrid halide perovskites, the very performant compounds in photovoltaic applications, possess large Seebeck coefficient and low thermal conductivity, making them potentially interesting high figure of merit (ZT) materials. For this purpose, one needs ...
American Chemical Society2015