Journal ArticleDOI
Extraordinary Thermoelectric Performance Realized in n-Type PbTe through Multiphase Nanostructure Engineering.
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TLDR
It is reported that a record-high ZT value of ≈1.83 can be achieved at 773 K in n-type PbTe-4%InSb composites, contributing to a significant enhancement in thermoelectric performance.Abstract:
Lead telluride has long been realized as an ideal p-type thermoelectric material at an intermediate temperature range; however, its commercial applications are largely restricted by its n-type counterpart that exhibits relatively inferior thermoelectric performance. This major limitation is largely solved here, where it is reported that a record-high ZT value of ≈1.83 can be achieved at 773 K in n-type PbTe-4%InSb composites. This significant enhancement in thermoelectric performance is attributed to the incorporation of InSb into the PbTe matrix resulting in multiphase nanostructures that can simultaneously modulate the electrical and thermal transport. On one hand, the multiphase energy barriers between nanophases and matrix can boost the power factor in the entire temperature range via significant enhancement of the Seebeck coefficient and moderately reducing the carrier mobility. On the other hand, the strengthened interface scattering at the intensive phase boundaries yields an extremely low lattice thermal conductivity. This strategy of constructing multiphase nanostructures can also be highly applicable in enhancing the performance of other state-of-the-art thermoelectric systems.read more
Citations
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Journal ArticleDOI
Thermoelectrics: From history, a window to the future
Davide Beretta,Davide Beretta,Neophytos Neophytou,James M. Hodges,Mercouri G. Kanatzidis,Dario Narducci,Marisol Martin Gonzalez,Matt Beekman,Benjamin Balke,Giacomo Cerretti,Wolfgang Tremel,Alexandra Zevalkink,Anna I. Hofmann,Christian Müller,Bernhard Dörling,Mariano Campoy-Quiles,Mario Caironi +16 more
TL;DR: A broad review of thermoelectric materials can be found in this article, where the authors discuss the major steps in the history of thermophysics, from the very early discovery to present technology.
Journal ArticleDOI
Remarkable Roles of Cu To Synergistically Optimize Phonon and Carrier Transport in n-Type PbTe-Cu2Te
Yu Xiao,Haijun Wu,Wei Li,Meijie Yin,Yanling Pei,Yang Zhang,Liangwei Fu,Yue-Xing Chen,Stephen J. Pennycook,Li Huang,Jiaqing He,Li-Dong Zhao +11 more
TL;DR: This work provides an effective strategy to enhance thermoelectric performance by simultaneously improving electrical and thermal transport properties in n-type PbTe by synergistically suppressing lattice thermal conductivity and enhancing carrier mobility by introducing Cu2Te inclusions.
Journal ArticleDOI
Self-Powered Temperature Sensor with Seebeck Effect Transduction for Photothermal–Thermoelectric Coupled Immunoassay
TL;DR: A self-powered temperature sensor based on Seebeck effect trans-duction was designed for photothermal-thermoelectric coupled immunoassay of alpha-fetoprotein (AFP) and offers tremendous potentials for applying many other high-efficient thermoelectrics materials in the ultrasensi-tive biosensors.
Journal ArticleDOI
Charge and phonon transport in PbTe-based thermoelectric materials
Yu Xiao,Li-Dong Zhao +1 more
TL;DR: In this paper, the authors summarized several strategies that were successfully applied in PbTe-based thermoelectric materials through manipulating charge and phonon transports, such as optimizing carrier density to tune Fermi level, tailoring band structure to enhance effective mass, and designing all-scale hierarchical architectures to suppress phonon propagation.
Journal ArticleDOI
Realizing high performance n-type PbTe by synergistically optimizing effective mass and carrier mobility and suppressing bipolar thermal conductivity
Yu Xiao,Haijun Wu,Juan Cui,Juan Cui,Dongyang Wang,Liangwei Fu,Yang Zhang,Yue Chen,Jiaqing He,Stephen J. Pennycook,Li-Dong Zhao +10 more
TL;DR: In this paper, the authors reported that the electrical and thermal transport properties of n-type PbTe can be simultaneously improved by introducing just one component, MnTe, and obtained a maximum ZT of ∼1.6 at 773 K and an average ZTave of > 1.0 at 300-873 K in n-Type MnTe alloyed PbTE.
References
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Journal ArticleDOI
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TL;DR: In the data for the 63 elements, trends that occur simultaneously in both the columns and the rows of the periodic table are shown to be useful in predicting correct values and also for identifying questionable data.
Journal ArticleDOI
Enhancement of Thermoelectric Efficiency in PbTe by Distortion of the Electronic Density of States
Joseph P. Heremans,Vladimir Jovovic,Eric S. Toberer,Ali Saramat,Ken Kurosaki,Anek Charoenphakdee,Shinsuke Yamanaka,G. Jeffrey Snyder +7 more
TL;DR: A successful implementation through the use of the thallium impurity levels in lead telluride (PbTe) is reported, which results in a doubling of zT in p-type PbTe to above 1.5 at 773 kelvin.
Journal ArticleDOI
Convergence of electronic bands for high performance bulk thermoelectrics
TL;DR: It is demonstrated that it is possible to direct the convergence of many valleys in a bulk material by tuning the doping and composition, leading to an extraordinary zT value of 1.8 at about 850 kelvin.
Journal ArticleDOI
The best thermoelectric.
Gerald D. Mahan,Jorge O. Sofo +1 more
TL;DR: A delta-shaped transport distribution is found to maximize the thermoelectric properties, indicating that a narrow distribution of the energy of the electrons participating in the transport process is needed for maximum thermoelectedric efficiency.
Journal ArticleDOI
Characterization of Lorenz number with Seebeck coefficient measurement
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