Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Developing n-type materials with high peak and/or average ZT (ZT is the figure of merit) is an urgent need for the lower ZT of the existing n-type BiTeSe materials compared with the p-type BiSbTe materials. Here, we demonstrate that liquid-phase sintering can lead to lowered thermal conductivity and an improved power factor in n-type AgSe, which originates from the greatly lowered electronic thermal conductivity attributed to the decreased mobility and improved Seebeck coefficients because of increased effective mass. Benefiting from this, the maximum ZT (ZT) of ∼1.21 and the average ZT (ZT) of 1.06 are successfully achieved in polycrystalline AgSe. In this work, ZT is the highest reported value, being 26% larger than that of AgSe reported. Our work shows that liquid-phase sintering to achieve improved thermoelectric (TE) performance opens a great opportunity for designing prospective thermoelectrics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.1c08410 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chiral edge state control of thermoelectric effects.
Sci Adv
September 2025
Materials Department, University of California, Santa Barbara, CA 93106-5050, USA.
Thermoelectric responses in two-dimensional electron gases subjected to magnetic fields have the potential to provide unique information about quasiparticle statistics. In this study, we show that chiral edge states play a key role in thermoelectric Hall bar measurements by completely controlling the direction of the internal thermal gradient. To this end, we perform measurements of the magnetothermoelectric responses of cadmium arsenide quantum wells.
View Article and Find Full Text PDFHomo-layer flexible BiTe-based films with high thermoelectric performance.
Sci Adv
September 2025
Department of Physics, State Key Laboratory of Quantum Functional Materials, and Guangdong Basic Research Center of Excellence for Quantum Science, Southern University of Science and Technology, Shenzhen 518055, China.
Here, we demonstrate unconventional scalable and sustainable manufacturing of flexible n-type BiTe films via physical vapor deposition and homo-layer fusion engineering. The achieved ultrahigh power factor of up to 30.0 microwatts per centimeter per square kelvin and ultralow lattice thermal conductivity of 0.
View Article and Find Full Text PDFIncorporation of MXene into BiS Matrix Promotes Better Electron Transport and Enhanced Thermoelectric Figure of Merit.
ACS Appl Mater Interfaces
September 2025
Plasmonics and Perovskites Laboratory, Department of Materials Science and Engineering, IIT Kanpur, Kanpur, U.P. 208016, India.
Contrary to the state-of-the-art thermoelectrics, such as tellurides and selenides, the thermoelectric performance of earth-abundant and less toxic BiS has been found to be inferior primarily because of poor electron transport. Herein, a less explored approach of composite formation using nanoinclusions of two-dimensional (2D) MXene, a graphene-analogous material, in BiS has been adopted to tailor the transport properties in order to obtain enhanced thermoelectric figure of merit (). Highly conductive stacked sheets of TiCT MXene, incorporated into the matrix of BiS, facilitate smoother electron transport, resulting in significantly enhanced electrical conductivity.
View Article and Find Full Text PDFCarrier Concentration Optimization Facilitates High Thermoelectric Performance in Solution-Grown Y and Pb Codoped SnSe Nanorods.
ACS Appl Mater Interfaces
September 2025
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Here, Pb/Y codoped SnSe nanorods were fabricated via a bottom-up, cost-effective hydrothermal method. The formation of nanorod structures generating high-density grain boundaries significantly enhances phonon scattering, serving as the primary mechanism for lattice thermal conductivity reduction. Furthermore, Y-element enrichment regions, nanoprecipitates, and dense dislocation networks provide additional phonon scattering that further suppresses phonon transport.
View Article and Find Full Text PDFAtomic Off-Centering and Grain Boundary Engineering Drive Extraordinary Thermoelectric Properties in AgSbSe.
Small
September 2025
Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian, 116024, China.
AgSbSe is regarded as a promising p-type I-V-VI thermoelectric material owing to the intrinsically low thermal conductivity and high Seebeck coefficient. However, the intrinsic low electrical conductivity impedes the further enhancement of the thermoelectric performance of AgSbSe. Here, a novel approach is initiated to enhance the thermoelectric properties of AgSbSe by combining atomic off-centering with grain boundary engineering.
View Article and Find Full Text PDF