A5080180207- Chalcogenide Semiconductor Thin Films
- Advanced Thermoelectric Materials and Devices
- Electrocatalysts for Energy Conversion
- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- High Entropy Alloys Studies
- Quantum Dots Synthesis And Properties
- Photonic Crystal and Fiber Optics
- Electronic and Structural Properties of Oxides
- High-Temperature Coating Behaviors
- Zeolite Catalysis and Synthesis
- Electrochemical Analysis and Applications
- Laser-Matter Interactions and Applications
- Advancements in Solid Oxide Fuel Cells
- Solid-state spectroscopy and crystallography
- Phase-change materials and chalcogenides
- Advanced Photocatalysis Techniques
- Ferroelectric and Piezoelectric Materials
- Electrochemical sensors and biosensors
- Semiconductor materials and interfaces
- Mesoporous Materials and Catalysis
- Advanced materials and composites
- Catalysis and Oxidation Reactions
- Advanced battery technologies research
- Catalysts for Methane Reforming
AGH University of Krakow
2015-2024
Jagiellonian University
2024
For the first time, high entropy perovskites from La<sub>1−x</sub>Sr<italic>x</italic>(Co,Cr,Fe,Mn,Ni)O<sub>3−</sub><italic>δ</italic>(<italic>x</italic>= 0, 0.1, 0.2, 0.3, 0.4 and 0.5) series are documented to possess attractive properties as a candidate air electrode material for Solid Oxide Fuel Cells (SOFCs).
We report a study on hybrid mode-locked fiber laser with two saturable absorbers: slow and fast, integrated in single device. Amorphous antimony telluride (Sb(2)Te(3)) layer was deposited side-polished to form the absorber due third order nonlinear susceptibility of Sb(2)Te(3). Additionally, an unsymmetrical design device causes polarization-dependent losses together polarization controller allows use evolution artificial fast absorber. Sub-200 fs soliton pulses 0.27 nJ pulse energy were...
We present a study on antimony telluride (Sb2Te3)-deposited side-polished fiber device as saturable absorber for Yb-doped mode-locked lasers. Thin layers of Sb2Te3 with variable length were deposited by pulsed magnetron sputtering technique. demonstrate measured characteristics the and show that it can be treated hybrid component - tunable polarizer absorption properties. The polarizing extinction ratio varies from 1.5 dB up to 17.1 increasing deposition. components employed in all-normal...
Abstract Antimony telluride (Sb 2 Te 3 ) is an intermetallic compound crystallizing in a hexagonal lattice with R-3m space group. It creates c lose packed structure of ABCABC type. As intrinsic semiconductor characterized by excellent electrical properties, Sb widely used as low-temperature thermoelectric material. At the same time, due to unusual properties (strictly connected structure), antimony exhibits nonlinear optical including saturable absorption. Nanostructurization, elemental...
Transition metal sulfides have received great attention as electrocatalysts for electrochemical sensors and water electrolysis. In the present study, a facile rapid chemical conversion route was used synthesis of partially fully converted Ag2S from tube-like CuS. The morphology obtained materials investigated by scanning electron microscopy (SEM) transition (TEM), revealing that complex shape CuS maintained after conversion. Information about phase elemental composition X-ray diffraction...
Pentlandites are one possible cost-effective alternative to platinum group metals for green hydrogen production. This study delves into the catalytic performance of trimetallic pentlandite systems, exploring influence selenium concentration and material form on their efficiency by combining investigation materials in various forms (powder catalysts, ingots, highly densified pellets) with a computational investigation. The experimentally observed solubility limit was clarified based formation...
Ag, Cu and Sn based electrocatalysts promise high CO2 reduction kinetics effiencies on gas diffusion electrodes. Cu, sulfide catalysts in particular may offer altered electronic properites and...
Multicomponent, transition-metal selenides characterized by TM3Se4 stoichiometry, and monoclinic pseudospinel structure were recently reported as promising catalysts for water-splitting processes. However, the initial data indicate that simple increase in number of composing elements might not be sufficient to maximize their performance, with systematic screening different regions multicomponent phase diagrams proving most effective approach. Thus, this work, a series highly conductive...
We report on the first application of an antimony telluride (Sb2Te3) thin film as a saturable absorber (SA) in microchip laser. The 3–15 nm-thick Sb2Te3 films were deposited glass substrates by pulsed magnetron sputtering and they studied SEM, X-ray diffraction, Raman optical spectroscopy. absorption was confirmed at 1.56 μm for ns-long pulses revealing low saturation intensity 0.17 MW/cm2. laser based Tm:GdVO4 crystal diode-pumped ~802 nm. In continuous-wave regime, this generated 3.54 W...
A multi-phase composite based on the copper sulfide and bornite phases was obtained. The sintering process (inductive hot pressing method) multiple thermoelectric measurements lead, however, to complete reconstruction of structure. Structural, stability studies indicate that final material initially consisting 90% Cu2S 10% Cu5FeS4 is characterized by a figure merit (ZT) about 1.0 (900 [K]) with significantly improved in comparison bulk Cu2S-based materials. presence iron-rich stabilizes...
The multi-component approach to materials design, together with the adaptation of processing conditions, is gaining increasing popularity in energy-conversion-oriented applications allowing highly effective catalysts be obtained.
We report on the generation of 152-nJ Q-switched pulses in all-polarization-maintaining Er-doped fiber laser. The laser is passively modulated by antimony telluride (Sb2Te3) layer sputtered a surface side-polished order to exploit evanescent field interaction optically nonlinear material. cavity designed an extremely simple way comprising, addition fibers, only one component and saturable absorber, forming robust, compact, stable source short pulses. repetition rate might be tuned from 42...
High temperature corrosion of thermoelectric materials is one the most important issues linked with their application for power generation, especially in terrestrial conditions. The high chemical affinity elements composing material to oxygen results continuous degradation at temperatures state-of-the-art materials. This issue also well recognized case antimonide skutterudites. simplest way protect against this process use coatings. Complicated geometry module favors coatings that can be...
For the first time, high entropy, transition metal-based chalcogenides are synthesized. The materials characterized by pentlandite structure, exhibiting promising functional properties with regard to multiple possible applications.
For the first time, an alternative way of improving stability Cu-based thermoelectric materials is proposed, with investigation two different copper chalcogenide–copper tetrahedrite composites, rich in sulfur and selenium anions, respectively. Based on preliminary DFT results, which indicate instability Sb-doped chalcogenide, Cu1.97S–Cu12Sb4S13 Cu2−xSe–Cu3SbSe3 composites are obtained using melt-solidification techniques, phase concentration varying from 1 to 10 wt.%. Room temperature...