A5075673487- Advanced Thermoelectric Materials and Devices
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Magnetic and transport properties of perovskites and related materials
- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Ferroelectric and Piezoelectric Materials
- Natural Fiber Reinforced Composites
- Gas Sensing Nanomaterials and Sensors
- Thermal Expansion and Ionic Conductivity
- 2D Materials and Applications
- Heusler alloys: electronic and magnetic properties
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Dielectric materials and actuators
- Polymer Foaming and Composites
- Advanced Cellulose Research Studies
- Acoustic Wave Resonator Technologies
- Perfectionism, Procrastination, Anxiety Studies
- Innovations in Concrete and Construction Materials
- High Entropy Alloys Studies
- Advanced Photocatalysis Techniques
- CO2 Reduction Techniques and Catalysts
- Multiferroics and related materials
- Quantum Dots Synthesis And Properties
Tsinghua University
2016-2025
State Key Laboratory of New Ceramics and Fine Processing
2016-2025
Central South University
2025
First Affiliated Hospital of Zhengzhou University
2025
Heilongjiang University of Science and Technology
2024
Xiamen University
2022
Heilongjiang Institute of Wood Science
2019-2021
Wuhan University
2020
Tokyo Institute of Technology
2020
Multidisciplinary Digital Publishing Institute (Switzerland)
2019
Thermoelectric materials can realize direct conversion between heat and electricity, showing excellent potential for waste recovery. Cu
BiCuSeO oxyselenides are promising thermoelectric materials, yet further figure of merit ZT improvement is largely limited by the inferior electrical transport properties. The established literature on these materials shows only one power factor maximum upon carrier concentration optimization, which typical for most semiconductors. Surprisingly, we found three maxima when doping Bi with Pb. Based our first-principles calculations, numerical modeling, and experimental investigation, attribute...
Thermoelectrics can be capable of direct and reversible conversion between heat electricity. Low dimensional thermoelectric materials, especially two (2D) thin films, have been considered as a breakthrough to decouple the correlations electronic thermal transport, contributing optimization performance. During past few decades, some effective strategies combined with physical concepts like quantum confinement effect, energy filtering band structure tuning interface engineering are introduced...
Abstract For an ideal electrostatic energy storage dielectric capacitor, the pursuit of simultaneously high density and efficiency presents a formidable challenge. Typically, under applied electric field, increase in is usually accompanied with deteriorated due to escalated hysteretic loss, which harmful reliability capacitor. Thus, well‐balanced performance improved maintained highly demanded. In this work, structure amorphous phases embedded polycrystalline nanograins using entropy tactic,...
Abstract Thermoelectrics converting heat and electricity directly attract broad attentions. To enhance the thermoelectric figure of merit, zT , one key points is to decouple carrier-phonon transport. Here, we propose an entropy engineering strategy realize decoupling in typical SrTiO 3 -based perovskite thermoelectrics. By high-entropy design, lattice thermal conductivity could be reduced nearly amorphous limit, 1.25 W m −1 K . Simultaneously, can tune Ti displacement, improving weighted...
To meet the miniaturization demands of next-generation electronics and electrical systems, energy storage capacitors with both high density efficiency have become a research hotspot. Ferroelectric-based dielectrics are primary candidates due to existence spontaneous polarization versatile domain structures. Since domains fundamental structure units that respond external electric field, engineering is general route realizing performance. In this perspective, we introduce type dielectrics,...
Abstract Oxygen‐containing compounds are promising thermoelectric (TE) materials for their chemical and thermal stability. As compared with the high‐performance p‐type counterparts (e.g., ZT ≈1.5 BiCuSeO), enhancement of TE performance n‐type oxygen‐containing remains challenging due to mediocre electrical conductivity high conductivity. Here, layered Bi 2 O Se is reported as a potential material, which transport properties can be effectively tuned via carrier engineering hierarchical...
Abstract BiCuSeO is a promising oxygen‐containing thermoelectric material due to its intrinsically low lattice thermal conductivity and excellent service stability. However, the electrical limits performance. Aliovalent element doping can significantly improve their carrier concentration, but it may also impact mobility transport properties. Considering influence of graphene on carrier‐phonon decoupling, Bi 0.88 Pb 0.06 Ca CuSeO (BPCCSO)‐graphene composites are designed. For further...
Hybrid halide perovskites are good candidates for a range of functional materials such as optical electronic and photovoltaic devices due to their tunable band gaps, long carrier diffusion lengths, solution processability. However, the instability in moisture/air, toxicity lead, rigorous reaction setup or complex postprocessing have been bottlenecks practical application. Herein, we present simultaneous configurational entropy design at A-sites, B-sites, X-sites typical (CHA)
Polycrystalline Bi2Se3−xTex (x = 0~1.5) samples were prepared by self-propagating high-temperature synthesis (SHS) combined with spark plasma sintering (SPS) and their thermoelectric properties investigated. The SHS-SPS process can shorten the time few energy consumptions, obtain almost pure Bi2Se3-based phases. Consequently, Se vacancies anti-site defects contribute to converged carrier concentration of ~2 × 1019 cm−3 while increased effective mass enhances Seebeck coefficient more than...
Ga doping combined with optimization of the deposition temperature could be a promising strategy for enhancing thermoelectric properties ZnO-based epitaxial films.
Abstract Layered oxyselenides have been widely investigated as promising thermoelectric materials due to their unique merits such super‐lattice structural features and intrinsic complexity, which contributes low thermal conductivity easily controllable electrical properties. Newly developed Bi 2 LnO 4 Cu Se (Ln stands for lanthanide) are found be potential systems since they excellent over 10 3 S cm −1 . In this work, energy time‐saving method combined self‐propagating high‐temperature...
Abstract Polyhedral distortion, associated closely with the atomic arrangement and interatomic interactions, drives many unique behaviors in solids, such as phase transition negative thermal expansion. In thermoelectric heteroanionic oxides, anionic polyhedra are widely present, but their effect on transport is rarely investigated. Here, we report an anomalous conduction induced by local symmetry distortion layered oxyselenides via solving Boltzmann equation based first-principles...
The ultrafast synthesis process combined with Ag doping gives rise to the formation of 2 Se nanofibers and multi-sized pores. Subsequently, high thermoelectric performance in Ag-doped PbSe can be achieved by morphology engineering.
Abstract Silver‐telluride‐based nanowires (STNWs) are promising thermoelectric (TE) materials for room temperature (RT) applications, can be utilized to fabricate flexible TE composites or inks facilitate conversion in various situations. However, current research on doping design and morphology optimization of STNWs is still limited. Such strategies expected enhance the performance flexibility, thereby improving compatibility applications. Herein, we report a simple yet efficient iodide...