A5100709674- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- 2D Materials and Applications
- Catalytic Processes in Materials Science
- Corrosion Behavior and Inhibition
- Mesoporous Materials and Catalysis
- ZnO doping and properties
- Topological Materials and Phenomena
- Zeolite Catalysis and Synthesis
- Graphene research and applications
- Perovskite Materials and Applications
- Heusler alloys: electronic and magnetic properties
- TiO2 Photocatalysis and Solar Cells
- Thermal Radiation and Cooling Technologies
- Quantum Dots Synthesis And Properties
- Magnesium Oxide Properties and Applications
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced Photocatalysis Techniques
- Silicone and Siloxane Chemistry
- MXene and MAX Phase Materials
- Phase-change materials and chalcogenides
- Advanced Nanomaterials in Catalysis
Children's Hospital of Chongqing Medical University
2024
Chongqing Medical University
2024
Wuhan University of Technology
2014-2023
Xi'an Jiaotong University
2020-2023
Zhejiang University
2021-2023
Foshan University
2021
National Engineering Research Center of Electromagnetic Radiation Control Materials
2020
University of Electronic Science and Technology of China
2020
Henan Academy of Sciences
2015-2020
Sichuan University
2015-2020
High performance BiSbTe alloy and modules with a conversion efficiency of 5% are achieved through integrating Zn induced defect complexity nanostructuring.
P-BiSbTe bulk materials with high texture, superior thermoelectric properties and robust mechanical performance were fabricated by laser 3D printing.
Abstract GeTe is a very promising thermoelectric material, but the presence of massive intrinsic Ge vacancies leads to an overhigh hole concentration and poor thermal stability. Counter doping commonly employed reduce concentration, which, however, unavoidably deteriorates carrier mobility. Here, it found that in rhombohedral phase much lower than cubic phase, owing higher formation energy vacancy former. With this recognition, can be tuned its optimum value simply by annealing below...
The donor‐like effect, depicting the uncontrollable increase of electron density that can significantly alter thermoelectric performance both p‐type and n‐type polycrystalline Bi 2 Te 3 ‐based materials, has long been an intriguing phenomenon, while its origin is still elusive. Herein, it found different from common argument, effect in polycrystals a result oxygen‐adsorption‐induced evolution point defects. dominant defect stoichiometric zone‐melted ingot acceptor‐like . During fabrication...
The manipulation of individual intrinsic point defects is crucial for boosting the thermoelectric performances n-Bi2Te3-based films, but was not achieved in previous studies. In this work, we realize independent Te vacancies VTe and antisite TeBi BiTe molecular beam epitaxially grown n-Bi2Te3 which directly monitored by a scanning tunneling microscope. By virtue introducing dominant antisites, film can achieve state-of-the-art power factor 5.05 mW m–1 K–2, significantly superior to films...
The strain-sensitive heterostructure, as a type of low-dimensional technique, has attracted extensive attention, but the influence mechanism biaxial strain on its thermoelectric properties is still unclear. In this paper, first principles based density functional theory and BoltzTrap transport equation with relaxation time calculated by deformation potential are employed to figure out effect band structure performance MoS2/WS2 heterostructure. lattice thermal conductivity under different...
The intrinsic conductivity σ 0 is proposed as a simple indicator to evaluate the electrical performance of thermoelectric materials, which could instruct exploration better thermoelectrics.
Polycrystalline Ti1+xS2 (0.111 ≤ x 0.161) with high density and controllable composition were successfully prepared using solid-state reaction combined plasma-activated sintering. showed strong (00l) preferred orientation Lotgering factor of 0.32–0.60 perpendicular to the pressing direction (⊥), whereas was not obvious along (∥). This structural anisotropy resulted in distinct anisotropic thermoelectric transport properties Ti1+xS2. At 300 K, while Seebeck coefficient weak anisotropic, power...
Ni and Se co-doping increases the DOS effective mass softens chemical bonding, resulting in highest <italic>ZT</italic> ∼ 0.58, 222% improvement over that of CoSbS.
Interactions among various film growth parameters, such as the substrate temperature (Tsub), thickness (d), and composition, play a crucial role in controlling type density of intrinsic point defects. In turn, defects modulate control electronic transport properties Bi2Te3 films. We have grown n-type films with different d by molecular beam epitaxy at Tsub. The formation was analyzed combined use angle-resolved photoelectron spectroscopy (ARPES) measurements. Two important findings were...
Abstract The recently developed defective 19‐electron half‐Heusler (HH) compounds, represented by Nb 1− δ CoSb, possess massive intrinsic vacancies at the cation site and thus intrinsically low lattice thermal conductivity that is desirable for thermoelectric (TE) applications. Yet TE performance of HHs with a maximum figure merit ( zT ) <1.0 still inferior to conventional 18‐electron ones. Here, peak exceeding unity obtained 1123 K both 0.7 Ta 0.13 CoSb 0.6 0.23 benchmark value HHs....
Abstract Resoles are resins obtained by base‐catalyzed phenol–formaldehyde condensation with a three‐dimensional cross‐linked framework. They considered as highly chemical‐resistant, and calcination is thus generally used in the treatment of resole‐type resins, which significantly limits diversity nanostructured materials that can be derived from resins. Herein, we report selected metal nitrate solutions to dissolve various types resoles through an oxidative dissolution process. This...
Abstract Interfacial charge effects, such as band bending, modulation doping, and energy filtering, are critical for improving electronic transport properties of superlattice films. However, effectively manipulating interfacial bending has proven challenging in previous studies. In this study, (1T′‐MoTe 2 ) x (Bi Te 3 y films with symmetry‐mismatch were successfully fabricated via the molecular beam epitaxy. This enables to manipulate thereby optimizing corresponding thermoelectric...