A5100320876- Advanced Thermoelectric Materials and Devices
- Chalcogenide Semiconductor Thin Films
- Thermal properties of materials
- Thermal Radiation and Cooling Technologies
- Perfectionism, Procrastination, Anxiety Studies
- 2D Materials and Applications
- Perovskite Materials and Applications
- Opinion Dynamics and Social Influence
- Phase-change materials and chalcogenides
- Complex Network Analysis Techniques
- Advanced Thermodynamics and Statistical Mechanics
- Game Theory and Applications
- Neural Networks and Reservoir Computing
- Mathematical and Theoretical Epidemiology and Ecology Models
- Machine Learning in Materials Science
- Evolutionary Game Theory and Cooperation
- Model Reduction and Neural Networks
- Microwave Dielectric Ceramics Synthesis
- Kruppel-like factors research
- Topological Materials and Phenomena
- Geophysical Methods and Applications
- Robotic Path Planning Algorithms
- Cardiovascular Function and Risk Factors
- Evolutionary Psychology and Human Behavior
- Experimental Behavioral Economics Studies
Beihang University
2012-2024
Ji Hua Laboratory
2024
Southwest Medical University
2024
Beijing National Laboratory for Molecular Sciences
2022
Chinese Academy of Sciences
2022
Institute of Chemistry
2022
University of Chinese Academy of Sciences
2022
Beijing Institute of Petrochemical Technology
2019
University of Illinois Urbana-Champaign
2017
Thermoelectric materials have drawn vast attentions for centuries, because thermoelectric effects enable direct conversion between thermal and electrical energy, thus providing an alternative power generation refrigeration. This review summaries the phenomena, applications parameter relationships. The approaches used performance enhancement are outlined, including: modifications of electronic band structures convergence to enhance Seebeck coefficients; nanostructuring all-scale hierarchical...
Heavy MnTe alloying can significantly improve the electrical and thermal transport properties of SnTe<italic>via</italic>multiple approaches.
We report enhanced thermoelectric performance in SnTe, where significantly improved electrical transport properties and reduced thermal conductivity were achieved simultaneously. The former was obtained from a larger hole Seebeck coefficient through Fermi level tuning by optimizing the carrier concentration with Ga, In, Bi, Sb dopants, resulting power factor of 21 μW cm–1 K–2 ZT 0.9 at 823 K Sn0.97Bi0.03Te. To reduce lattice without deteriorating mobility Sn0.97Bi0.03Te, SrTe chosen as...
Abstract Thermoelectrics has applications in power generation and refrigeration. Since only commercial Bi 2 Te 3 a low abundance Te, PbSe gets attention. This work enhances the near‐room temperature performance of p‐type through enhancing carrier mobility via lattice plainification. Composition controlled Cu‐doped crystals are grown physical vapor deposition. Results exhibit an enhanced ≈2578 cm V −1 s for Pb 0.996 Cu 0.0004 Se. Microstructure characterization density functional theory...
The practical application of thermoelectric devices requires both high-performance n-type and p-type materials the same system to avoid possible mismatches improve device reliability. Currently, environmentally friendly SnTe thermoelectrics have witnessed extensive efforts develop promising transport, making it rather urgent investigate counterparts with comparable performance. Herein, we a stepwise optimization strategy for improving transport properties SnTe. First, dopability by PbSe...
An effective approach to simultaneously enhance the power factor and reduce thermal conductivity was well elucidated in SnTe<italic>via</italic>introducing its analogues.
Due to the intrinsically plentiful Sn vacancies, developing n-type SnTe thermoelectric materials is a big challenge. Herein, with remarkable performance were successfully synthesized through suppressing followed by electron-doping. Pb alloying notably depressed vacancies via populating in (supported transmission electron microscopy), and electrical transports shifted from p-type introducing electrons using I doping. In SnTe, we found that conductivity could be enhanced increased carrier...
ConspectusThe growing energy crisis and the adverse environmental impacts caused by carbon-based consumption have spurred exploration of green sustainable energy. Researchers been devoted to developing thermoelectric technology that could directly reversibly convert heat into electricity. By virtue zero emissions, nonmoving parts, precise temperature control, long service life, thermoelectrics exhibit broad application in power generation refrigeration. Nevertheless, traditional...
ConspectusThermoelectric (TE) materials, interconverting electrical energy with heat energy, could improve utilization efficiency, optimize the structure, and promote sustainable economic social development. The Seebeck coefficient (S), characterizing output power, is a particularly important parameter for conversion efficiency of TE materials. In past 200 years since effect was discovered, researchers have tried various ways to increase S performance addition traditional approaches enhance...
We investigate the collective dynamics of excitatory-inhibitory excitable networks in response to external stimuli. How enhance dynamic range, which represents ability encode stimuli, is crucial many applications. regard system as a two-layer network (E layer and I layer) explore criticality range on diverse networks. Interestingly, we find that phase transition occurs when dominant eigenvalue E layer's weighted adjacency matrix exactly 1, only determined by topology layer. Meanwhile, it...
As a typical IV-VI compound, SnTe has aroused widely attentions in the thermoelectric community due its similar crystal and band structures with PbTe. However, both large number of inherent Sn vacancies high thermal conductivity result inferior performance intrinsic over broad temperature. In this work, we successfully improved those disadvantages via stepwisely Pb heavily alloying then doping. A significantly wide fraction into (0–50%) achieves multiple effects: (a) carrier concentration is...
A lot of thermoelectric materials (TE) have been proved as topological crystalline insulators (TCIs), like SnTe, although the internal connection and states has remained unclear. Herein, we deeply experimentally verified one–one correspondence between n-type SnTe phase transition. The challenging could only be realized after transition from topologically nontrivial to trivial phase, induced by Pb alloying via tuning L6+ L6− in band edge at L point Brillouin zone, followed donor doping Br,...
The thermoelectric performance of the insulator SrTiO 3 was improved through synergistically enhanced electrical transport properties via Fermi level regulation and modulation doping.