A5040534933- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Thermal Radiation and Cooling Technologies
- Heusler alloys: electronic and magnetic properties
- Perfectionism, Procrastination, Anxiety Studies
- Perovskite Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Optical properties and cooling technologies in crystalline materials
- Advanced Thermodynamics and Statistical Mechanics
- Thermal properties of materials
- Rare-earth and actinide compounds
University of Trento
2020-2024
Universidad Autónoma de Madrid
2024
Institute of Micro and Nanotechnology
2024
Copper-based chalcogenides have emerged as promising thermoelectric materials due to their high performance, tunable transport properties, earth abundance and low toxicity. We presented an overview of experimental results first-principal calculations investigating the properties various polymorphs Cu2SnS3 (CTS), Cu2ZnSnS4 (CZTS), Cu2ZnSnSe4 (CZTSe) synthesized by high-energy reactive mechanical alloying (ball milling). Of particular interest are disordered these materials, which exhibit...
Cu–Sn-based sulfides are earth-abundant and nontoxic compounds of special interest for low-cost energy harvesting applications. In the present work, we have investigated effect grain size on thermoelectric properties Cu2SnS3 (CTS). Three dense CTS samples with nanometric grains were produced by mechanical alloying combined spark plasma sintering, preserving small crystalline domains to 12, 25, 37 nm, respectively. The experimental results show that Seebeck coefficient (S) electrical...
In this work, Cu/Zn/Sn-based ternary and quaternary chalcogenides inks were synthesized via hot injection and/or from ball-milled powders. The used to fabricate thermoelectric generators (TEGs) based on p-type chalcogenide n-type aluminum-doped zinc oxide (AZO) thin films spin-coating magnetron sputtering, respectively. This work highlights the first-ever attempt in a facile scalable method thin-film TEGs using safe, low-cost, abundant materials. Four different fabricated Cu2ZnSnS4 (CZTS),...
The present work aims to investigate the effect of Ag doping on thermoelectric properties Cu2SnS3 (CTS). Various Cu2Ag(x)Sn(1–x)S3 (0.05 ≤ x 0.25) samples were synthesized by mechanical alloying followed spark plasma sintering, and their structural transport systematically investigated. = 0.15 sample presented a ∼10-fold higher power factor than undoped CTS. Although, 0.125 had lower sample, owing its thermal conductivity, both showed highest zT ∼ 0.8 at 723 K. This value is comparable best...
Cu2SnS3 (CTS) is a medium-temperature, ecofriendly, p-type thermoelectric material known for phonon-glass-electron-crystal characteristic. In the present work, ordered and disordered CTS samples were prepared from elemental powders, their electronic vibrational properties systematically investigated by experimental methods ab initio calculations. The polymorph presents higher power factor, PF ∼ 1.5 μW/K2 cm, than stable phase, 0.5 above 700 K, as an effect of smaller band gap carrier...
CuFeS2 (CFS) stands out as a promising narrow band-gap semiconductor for thermoelectric (TE) applications. However, its high lattice thermal conductivity is one of the factors hampering potential TE generation. A common strategy tackling this problem to produce material in thin film form. Thus, study aims practically understand and optimize synthesis CFS 2D materials using simple three-step approach ball-milling, evaporation, sulfurization CuFe metallic precursors. The tools characterization...
Abstract Cu-based sulphides are promising materials for environmentally friendly Te-free thermoelectric generators (TEGs). Cu 2 SnS 3 (CTS) stands out its electronic properties, stemming from conductive Cu–S networks, especially in fully disordered cubic structural form. While wet chemical techniques the most utilized CTS synthesis, they introduce organic contaminants that reduce connectivity between grains, limiting their performance as in-plane thin-film TEGs. We present a new method to...
The thermoelectric behavior and stability of Cu2SnS3 (CTS) has been investigated in relation to different preparations sintering conditions, leading microstructures porosities. studied system is CTS its cubic polymorph, produced powder form via a bottom-up approach based on high-energy reactive milling. as-milled was sintered two batches with synthesis conditions produce bulk samples: manual cold pressing followed by traditional (TS), or open die (ODP). Despite the significant differences...
RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to “Experimental and Ab Initio Study of Cu2SnS3 (CTS) Polymorphs for Thermoelectric Applications”Ketan LohaniKetan LohaniMore by Ketan Lohanihttp://orcid.org/0000-0003-1059-6744, Himanshu NautiyalHimanshu NautiyalMore Nautiyal, Narges AtaollahiNarges AtaollahiMore Ataollahihttp://orcid.org/0000-0002-8135-6054, Carlo FanciulliCarlo FanciulliMore Fanciulli, Ilya SergueevIlya SergueevMore Sergueev,...