Realizing high performance n-type PbTe by synergistically optimizing effective mass and carrier mobility and suppressing bipolar thermal conductivity

2018 ◽  
Vol 11 (9) ◽  
pp. 2486-2495 ◽  
Author(s):  
Yu Xiao ◽  
Haijun Wu ◽  
Juan Cui ◽  
Dongyang Wang ◽  
Liangwei Fu ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Band Structure ◽  
Effective Mass ◽  
Point Defects ◽  
High Performance ◽  
Carrier Mobility

Synergistically optimizing the band structure and introducing point defects lead to remarkably high ZT in n-type PbTe–MnTe.

Synergistic tuning of carrier mobility, effective mass, and point defects scattering triggered high thermoelectric performance in n-type Ge-doped PbTe

2019 ◽  
Vol 125 (5) ◽  
pp. 055104 ◽  
Author(s):  
Zhengshang Wang ◽  
Huan He ◽  
Xudong Cui ◽  
Hangtian Liu ◽  
Wenbin Qiu ◽  
...  
Keyword(s):  
Effective Mass ◽  
Point Defects ◽  
Carrier Mobility ◽  
Thermoelectric Performance

scholarly journals Band structure, effective mass, and carrier mobility of few-layer h-AlN under layer and strain engineering

APL Materials ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 021107 ◽  
Author(s):  
Yao Cai ◽  
Yan Liu ◽  
Ying Xie ◽  
Yang Zou ◽  
Chao Gao ◽  
...  
Keyword(s):  
Band Structure ◽  
Effective Mass ◽  
Carrier Mobility ◽  
Strain Engineering

OLIN C197

Alloy Digest ◽  
1999 ◽  
Vol 48 (1) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Wear Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Performance ◽  
Corrosion And Wear ◽  
Contact Forces ◽  
High Current ◽  
Lower Strength ◽  
Current Carrying Capability

Abstract Olin C197 is a second-generation high performance alloy developed by Olin Brass. It has a strength and bend formability similar to C194 (see Alloy Digest Cu-360, September 1978), but with 25% higher electrical and thermal conductivity. High conductivity allows C197 to replace brasses and bronzes in applications where high current-carrying capability is required. Also, the strength of C197 provides higher contact forces when substituted for many lower strength coppers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion and wear resistance as well as forming and joining. Filing Code: CU-627. Producer or source: Olin Brass.

Study of Transcrystallization in Polymer Composites

1989 ◽  
Vol 170 ◽  
Author(s):  
Benjamin S. Hsiao ◽  
J. H. Eric
Keyword(s):  
Thermal Conductivity ◽  
Free Energy ◽  
Carbon Fiber ◽  
Plasma Treatment ◽  
Polymer Composites ◽  
High Performance ◽  
Interfacial Strength ◽  
Fiber Surface ◽  
Semicrystalline Polymers ◽  
First Case

AbstractTranscrystallization of semicrystalline polymers, such as PEEK, PEKK and PPS, in high performance composites has been investigated. It is found that PPDT aramid fiber and pitch-based carbon fiber induce a transcrystalline interphase in all three polymers, whereas in PAN-based carbon fiber and glass fiber systems, transcrystallization occurs only under specific circumstances. Epitaxy is used to explain the surface-induced transcrystalline interphase in the first case. In the latter case, transcrystallization is probably not due to epitaxy, but may be attributed to the thermal conductivity mismatch. Plasma treatment on the fiber surface showed a negligible effect on inducing transcrystallization, implying that surface-free energy was not important. A microdebonding test was adopted to evaluate the interfacial strength between the fiber and matrix. Our preliminary results did not reveal any effect on the fiber/matrix interfacial strength of transcrystallinity.

Enhanced thermoelectric performance of band structure engineered GeSe1−xTex alloys

2021 ◽  
Vol 5 (6) ◽  
pp. 1734-1746
Author(s):  
D. Sidharth ◽  
A. S. Alagar Nedunchezhian ◽  
R. Akilan ◽  
Anup Srivastava ◽  
Bhuvanesh Srinivasan ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Band Structure ◽  
Power Factor ◽  
Thermoelectric Performance

The power factor of GeSe enhanced and thermal conductivity decreased by Te substitution and thereby, GeSe0.80Te0.20 exhibits high ZT.

scholarly journals Decoupling electron and phonon transport in single-nanowire hybrid materials for high-performance thermoelectrics

2021 ◽  
Vol 7 (20) ◽  
pp. eabe6000
Author(s):  
Lin Yang ◽  
Madeleine P. Gordon ◽  
Akanksha K. Menon ◽  
Alexandra Bruefach ◽  
Kyle Haas ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Transport ◽  
Electrical Transport ◽  
High Performance ◽  
Figure Of Merit ◽  
Phonon Transport ◽  
Core Shell ◽  
Nanowire Diameter ◽  
High Performing ◽  
Polycrystalline Thin Films

Organic-inorganic hybrids have recently emerged as a class of high-performing thermoelectric materials that are lightweight and mechanically flexible. However, the fundamental electrical and thermal transport in these materials has remained elusive due to the heterogeneity of bulk, polycrystalline, thin films reported thus far. Here, we systematically investigate a model hybrid comprising a single core/shell nanowire of Te-PEDOT:PSS. We show that as the nanowire diameter is reduced, the electrical conductivity increases and the thermal conductivity decreases, while the Seebeck coefficient remains nearly constant—this collectively results in a figure of merit, ZT, of 0.54 at 400 K. The origin of the decoupling of charge and heat transport lies in the fact that electrical transport occurs through the organic shell, while thermal transport is driven by the inorganic core. This study establishes design principles for high-performing thermoelectrics that leverage the unique interactions occurring at the interfaces of hybrid nanowires.

scholarly journals High carrier mobility and ultralow thermal conductivity in the synthetic layered superlattice Sn4Bi10Se19

2021 ◽  
Author(s):  
Ruiming Lu ◽  
Alan Olvera ◽  
Trevor Bailey ◽  
Jiefei Fu ◽  
Xianli Su ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Crystal Lattice ◽  
Carrier Mobility ◽  
Complex Materials ◽  
High Carrier Mobility ◽  
High Carrier

The integration within the same crystal lattice of two or more structurally and chemically distinct building units enables the design of complex materials featuring the coexistence of dissimilar functionalities. Here...

Longitudinal effective mass and band structure of quasiperiodic Fibonacci superlattices

1999 ◽  
Vol 59 (3) ◽  
pp. 2057-2062 ◽  
Author(s):  
A. Bruno-Alfonso ◽  
F. J. Ribeiro ◽  
A. Latgé ◽  
L. E. Oliveira
Keyword(s):  
Band Structure ◽  
Effective Mass
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