A5100455548- Advanced Thermoelectric Materials and Devices
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Heusler alloys: electronic and magnetic properties
- Magnetic and transport properties of perovskites and related materials
- Advanced Thermodynamics and Statistical Mechanics
- Advancements in Battery Materials
- Phase-change materials and chalcogenides
- Thermal Expansion and Ionic Conductivity
- Conducting polymers and applications
- Luminescence Properties of Advanced Materials
- 2D Materials and Applications
- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Advanced Semiconductor Detectors and Materials
- Multiferroics and related materials
- Supercapacitor Materials and Fabrication
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- Advanced Battery Materials and Technologies
- Solid-state spectroscopy and crystallography
- Fuel Cells and Related Materials
- Advancements in Solid Oxide Fuel Cells
Ningbo Institute of Industrial Technology
2016-2025
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2008-2025
South China University of Technology
2021-2024
Ministry of Agriculture and Rural Affairs
2024
South China Agricultural University
2021-2024
Shandong Academy of Sciences
2024
Qilu University of Technology
2024
National University of Defense Technology
2022-2024
Shaanxi Normal University
2024
Abstract The emerged strategy of entropy engineering provides new ideas for realizing high‐performance thermoelectric materials, but it is still much unresolved how to achieve delicate trade‐off between the carrier mobility m H and lattice thermal conductivity κ ph in taking advantage configurational Δ S . Herein, significant advances ultralow yet decent a medium‐entropy system well‐designed (Pb, Ge, Sb, Cd) co‐alloyed SnTe reported. Moreover, co‐alloying also optimizes concentration n...
As the sole dominator of commercial thermoelectric (TE) market, Bi2 Te3 -based alloys play an irreplaceable role in Peltier cooling and low-grade waste heat recovery. Herein, to improve relative low TE efficiency determined by figure merit ZT, effective approach is reported for improving performance p-type (Bi,Sb)2 incorporating Ag8 GeTe6 Se. Specifically, diffused Ag Ge atoms into matrix conduce optimized carrier concentration enlarge density-of-states mass while Sb-rich nanoprecipitates...
Abstract Bi 2 Te 3 ‐based alloys have historically dominated the commercial realm of near room‐temperature thermoelectric (TE) materials. However, more widespread application is currently constrained by its mediocre TE performance and inferior mechanical properties resulting from intrinsic hierarchical structure. Herein, microstructure modulation carrier transport optimization strategies are employed to efficiently balance electro‐thermal performance. Specifically, weighted mobility...
Bismuth-telluride-based alloy has long been considered as the most promising candidate for low-grade waste heat power generation. However, optimizing thermoelectric performance of n-type Bi
Among the inorganic phosphors used in advanced solid‐state lighting technologies, nitridosilicates have drawn significant attention because of their superior photoluminescence properties with high efficiency and thermal stabilities. However, synthesis nitride usually requires strict processing conditions a long time, leading to very manufacturing costs. Herein, novel orthosilicate green phosphor, Ba 9 Lu 2 Si 6 O 24 :Ce 3+ , is synthesized via simple reaction. The characterization identifies...
Mn alloying in SnTe increases the band gap and decreases energy separation between light heavy hole valence bands, leading to a significant enhancement Seebeck coefficient. The maximum <italic>ZT</italic> of ~1.25 is found at 920 K for p-type SnMn<sub>0.07</sub>Te.
The power factor was significantly enhanced benefiting from texture modulation, resulting in a<italic>ZT</italic>of ∼1.0 p-type polycrystalline SnSe.
N-type SnSe compound has been synthesized through melting with spark plasma sintering. By doping BiCl3, the carrier concentration of is significantly increased, leading to a large enhancement electrical conductivity. Meanwhile, SnSe0.95-BiCl3 samples also exhibit higher Seebeck coefficient and lower lattice thermal conductivity, compared polycrystalline SnSe. Consequently, high power factor ∼5 μW cm−1 K−2 ZT 0.7 have achieved at 793 K. The synergistic roles BiCl3 in provide many...
We report an enhanced thermoelectric performance by manipulating band engineering in Mn–In codoped SnTe. It has been revealed that SnTe is a unique example achieving the synergy of convergence and resonant state. According to theory, favors heavy doping, while state light doping. Following this idea, series samples are prepared hot pressing. A significantly Seebeck coefficient 116 μV K–1 at 300 K observed Sn0.915Mn0.11In0.005Te. By carefully tuning structure solid solution, we achieve high...
The thermoelectric properties of two-dimensional graphyne sheets are investigated by using first-principles calculations and the Boltzmann transport equation method.
Abstract Bismuth‐telluride‐based alloy is the sole thermoelectric candidate for commercial application in low‐grade waste heat harvest near room temperature, but sharp drop of properties at higher temperature and weak mechanical strength zone‐melted material are main obstacles to its wide development power generation. Herein, an effective approach reported improve performance p ‐type Bi 0.42 Sb 1.58 Te 3 hot‐pressed sample by incorporating Ag 5 SbSe 4 . A peak ZT 1.40 375 K a high average...
Abstract An ideal thermoelectric material requires the multi‐valley and strong dispersion band structure, for relieving competition between thermopower electrical conductivity, whereas two features barely coexist in natural compounds. Here, significantly improved performance n ‐type PbSe‐ x AgSbS 2 with purposefully renormalized conduction structure is reported. It shown that spin‐orbit coupling effect splits single valley at “L” point into three individuals delicately, as Dirac shifted away...
The outstanding discrepancy between the measured and calculated (local-density approximation) Fermi surfaces in well-characterized, paramagnetic liquid ${\mathrm{Sr}}_{2}{\mathrm{RhO}}_{4}$ is resolved by including spin-orbit coupling Coulomb repulsion. This results an effective constant enhanced 2.15 times over bare value. A simple formalism allows discussion of other systems. For ${\mathrm{Sr}}_{2}{\mathrm{RhO}}_{4}$, experimental specific-heat mass enhancements are found to be 2.2.
The rock-salt type SnTe–CdTe alloys have been synthesized by the zone-melting method and show enhanced thermoelectric performance due to improved band convergence.
Bi–Zn codoping promotes valence band convergence and strengthens multiple defect-phonon scattering in GeTe, leading to obviously improved thermoelectric properties.
In recent decades, bismuth telluride (Bi2Te3) has been in widespread use for normal-temperature thermoelectric cooling. However, commercial zone-melted faces the big challenge of dramatically decreased properties at higher temperature, which limits its usage intermediate temperature. this contribution, performance p-type is enhanced via a synergistic optimization by hot deformation and copper doping. Hot treatment boosts grain growth exhibits donor-like effects, leading to improved...
Phonon engineering is a core stratagem to improve the thermoelectric performance, and multi-scale defects are expected scatter broad range of phonons compress lattice thermal conductivity. Here, we demonstrate obviously enhanced properties in Bi0.48Sb1.52Te3 alloy by hot-pressing texture method along axial direction zone-melted ingot. It found that plastic deformation grain refinement rearrangement occurs during textured pressing process. Although obtained power factor slightly decreased,...
Abstract The good co‐existence of midgap state and valence band degeneracy is realized in Bi‐alloyed GeTe through the In‐Cd codoping to play different but complementary roles structure modification. In doping induces results a considerably improved Seebeck coefficient near room temperature, while Cd significantly increases mid‐high temperature region by promoting convergence. synergistic effects obviously increase density effective mass from 1.39 2.65 m 0 , corresponding carrier mobility...