A5100742971- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Advanced Thermoelectric Materials and Devices
- Shape Memory Alloy Transformations
- Microwave Dielectric Ceramics Synthesis
- Dielectric properties of ceramics
- Thermal properties of materials
- Chalcogenide Semiconductor Thin Films
- Acoustic Wave Resonator Technologies
- Thermal Radiation and Cooling Technologies
- Thermal Expansion and Ionic Conductivity
- Titanium Alloys Microstructure and Properties
- Magnetic and transport properties of perovskites and related materials
- Thin-Film Transistor Technologies
- Heusler alloys: electronic and magnetic properties
- Semiconductor materials and devices
- Dielectric materials and actuators
- Magnetic Properties and Synthesis of Ferrites
- ZnO doping and properties
- Perovskite Materials and Applications
- Magnetic Properties and Applications
- Quantum Dots Synthesis And Properties
- Metal and Thin Film Mechanics
- Photonic and Optical Devices
- biodegradable polymer synthesis and properties
Harbin Institute of Technology
2016-2025
Chongqing University of Science and Technology
2016-2025
Nankai University
2022-2025
Wenzhou Medical University
2021-2025
First Affiliated Hospital of Wenzhou Medical University
2022-2025
Chinese Academy of Geological Sciences
2023-2025
Chongqing 2D Materials Institute (China)
2019-2025
Neusoft (China)
2022-2024
Chongqing University
2009-2024
National University of Malaysia
2022-2024
A high ZT value of ∼1.1 at 923 K in the BiCuSeO system is achieved via heavily doping with Ba and refining grain sizes (200–400 nm), which higher than any thermoelectric oxide. Excellent thermal chemical stabilities up to performance confirm that promising for power generation applications.
We present a high ZT ∼ 1.4 in textured Bi0.875Ba0.125CuSeO obtained by hot-forging process. The carrier mobility along the direction perpendicular to pressing was significantly increased, resulting increase electrical conductivity and maximization of power factor at 923 K from 6.3 μW cm−1 K−2 for sample before 8.1 after Therefore, maximum increased ∼1.1 through texturing Bi0.875Ba0.125CuSeO, which is highest ever reported among oxygen containing materials.
β-NaGdF4 : Yb3+/Er3+ nanoparticles (NPs) codoped with Li+ ions were prepared for the first time via a thermal decomposition reaction of trifluoroacetates in oleylamine. The influence site occupancy on upconversion emission NPs was investigated detail. intensity significantly enhanced by introducing different concentrations ions. In contrast to lithium-free Yb3+/Er3+, green and red UC intensities 7 mol% about 47 23 times, respectively. luminescence enhancement should be attributed distortion...
Grain or phase boundaries play a critical role in the carrier and phonon transport bulk thermoelectric materials. Previous investigations about controlling primarily focused on reducing grain size forming nanoinclusions. Herein, liquid compaction method is first used to fabricate Yb‐filled CoSb 3 with excess Sb content, which shows typical feature of low‐angle dense dislocation arrays. Seebeck coefficients show dramatic increase via energy filtering effect through arrays little deterioration...
The understanding of the interaction between building blocks in hybrids can advance our comprehension design principles high-performance microwave absorbing materials. Here, we report a hybrid material consisting magnetite (Fe3O4) nanocrystals grown on multiwalled carbon nanotube (MWCNT) as absorber 2–18 GHz band, although Fe3O4 or MWCNTs alone their physical mixture show little absorption. is characterized by transmission electron microscopy, X-ray diffraction, and vector network analysis,...
Thermoelectric interface materials (TEiMs) are essential to the development of thermoelectric generators. Common TEiMs use pure metals or binary alloys but have performance stability issues. Conventional selection generally relies on trial-and-error experimentation. We developed a TEiM screening strategy that is based phase diagram predictions by density functional theory calculations. By combining with electrical resistivity and melting points potential reaction products, we discovered...
Bi2 Te3 -related alloys dominate the commercial thermoelectric market, but layered crystal structure leads to dissociation and intrinsic brittle fracture, especially for single crystals that may worsen practical efficiency. In this work, point defect configuration by S/Te/I defects engineering is engaged boost mechanical properties of n-type alloy, which, coupled with p-type BiSbTe, shows a competitive conversion efficiency fabricated module. First, as S alloying suppresses BiTe, antisite...
Abstract At present, the weak thermoelectric and mechanical performance of zone‐melting bismuth telluride alloys cannot support further improvement cooling processing semiconductor refrigeration devices. Here, MnO 2 is added into high‐strength Bi 0.4 Sb 1.6 Te 3 prepared by ball milling method to optimize its transport properties. Via in situ reaction, O nano‐precipitates are formed matrix, which also leads surplus element. As results, donor‐like effect suppressed, thereby increasing carrier...
Nearly monodisperse magnetite nanoparticles with sizes less than 10 nm have been successfully deposited on multi-walled carbon nanotubes (MWNTs) by in situ high-temperature decomposition of the precursor iron(III) acetylacetonate and MWNTs polyol solution. The effects concentration iron ultimate nanocomposites characteristics were investigated. XRD, TEM, HRTEM, EDS, PPMS Quantum Design used to characterize final products. It was found that their coverage density could be easily controlled...
A non-volatile resistive switching mechanism based on trap-related space-charge-limited-conduction (SCLC) is proposed. Excellent memory characteristics have been demonstrated using near-stoichiometric cuprous oxide (Cu <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> O) metal-insulator-metal (MIM) structures: low-power operation, fast speed, superior temperature characteristics, and long retention. This MIM cell fully compatible with...
SnTe is known as an eco-friendly analogue of PbTe without toxic elements. However, the application potentials pure are limited because its high hole carrier concentration derived from intrinsic Sn vacancies, which lead to a electrical thermal conductivity and low Seebeck coefficient. In this study, self-compensation Mn alloying could significantly improve coefficients in whole temperature range through simultaneous optimization band engineering, thereby leading large improvement power...
The thermoelectric properties of the Bi1−xNaxCuSeO (0.0 ≤ x 0.02) system have been investigated in temperature range 300–923 K. Na doping significantly increased carrier concentration to ∼0.92 × 1020 cm−3 at amount = 0.02. Furthermore, a relatively high mobility and slight Seebeck coefficient enhancement was seen, thus resulting power factor 8.0 μW cm−1 K−2 room temperature. Coupled with low thermal conductivity reduced by point defects scattering, this leads ZT 0.91 923 K for...
Despite the unfavorable band structure with twofold degeneracy at valence maximum, MgAgSb is still an excellent p‐type thermoelectric material for applications near room temperature. The intrinsically weak electron–phonon coupling, reflected by low deformation potential E def ≈ 6.3 eV, plays a crucial role in relatively high power factor of MgAgSb. More importantly, Li successfully doped into Mg site to tune carrier concentration, leading resistivity reduction 3 and consequent increase ≈30%...
Monodisperse ZnFe2O4 nanoparticles with sizes less than 10 nm have been successfully assembled on multi-walled carbon nanotubes (MWCNTs) by in situ high-temperature decomposition of the precursor iron(III) acetylacetonate, zinc acetate and MWCNTs polyol solution. A possible formation mechanism was proposed, which suggests that are formed surface through an aggregation thermochemical reaction process between ZnO γ-Fe2O3 subparticles. It found coverage density could be easily controlled...
Magnetoelectric multiferroic fluids composed of BaTiO<sub>3</sub>@CoFe<sub>2</sub>O<sub>4</sub> composite nanoparticles dispersed in a highly insulating nonpolar oleic acid/silicone oil mixture have been developed.