Anomalously large lattice thermal conductivity in metallic tungsten carbide and its origin in the electronic structure

2020 ◽  
Vol 13 ◽  
pp. 100214 ◽  
Author(s):  
A. Kundu ◽  
J. Ma ◽  
J. Carrete ◽  
G.K.H. Madsen ◽  
W. Li
Keyword(s):  
Thermal Conductivity ◽  
Electronic Structure ◽  
Tungsten Carbide ◽  
Lattice Thermal Conductivity ◽  
Large Lattice

Metal phosphide CuP2 as a promising thermoelectric material: an insight from first-principles study

2021 ◽  
Author(s):  
Un-Gi Jong ◽  
Chol-Hyok Ri ◽  
Chol-Jin Pak ◽  
Chol-Hyok Kim ◽  
Stefaan Cottenier ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermoelectric Material ◽  
Thermoelectric Materials ◽  
First Principles ◽  
Lattice Thermal Conductivity ◽  
Metal Phosphide ◽  
First Principles Study ◽  
Metal Phosphides ◽  
Large Lattice

In the search for better thermoelectric materials, metal phosphides have not been considered to be viable candidates so far, due to their large lattice thermal conductivity. Here we study thermoelectric...

Transport Properties of Superlattice Nanowires and Their Potential for Thermoelectric Applications

2002 ◽  
Vol 737 ◽  
Author(s):  
Yu-Ming Lin ◽  
Mildred S. Dresselhaus
Keyword(s):  
Thermal Conductivity ◽  
Quantum Dots ◽  
Electronic Structure ◽  
Theoretical Model ◽  
Transport Properties ◽  
Periodic Potential ◽  
Lattice Thermal Conductivity ◽  
Electronic Density ◽  
Potential Perturbation ◽  
Electronic Tunneling

ABSTRACTA theoretical model for the electronic structure and transport properties of superlattice (SL) nanowires is presented, based on the electronic tunneling between quantum dots. Due to the periodic potential perturbation, SL nanowires exhibit unusual features in the electronic density of states that are absent in homogeneous nanowires. Transport property calculations of PbSe/PbS SL nanowires are presented, showing improved thermoelectric performance compared to homogeneous nanowires because of a lower lattice thermal conductivity and an enhanced Seebeck coefficient, indicating that SL nanowires are promising systems for thermoelectric applications.

Germanium Chalcogenide Thermoelectrics: Electronic Structure Modulation and Low Lattice Thermal Conductivity

2018 ◽  
Vol 30 (17) ◽  
pp. 5799-5813 ◽  
Author(s):  
Subhajit Roychowdhury ◽  
Manisha Samanta ◽  
Suresh Perumal ◽  
Kanishka Biswas
Keyword(s):  
Thermal Conductivity ◽  
Electronic Structure ◽  
Lattice Thermal Conductivity ◽  
Structure Modulation

Improving the thermoelectric performance of Cu2SnSe3via regulating micro- and electronic structures

Nanoscale ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 4233-4240
Author(s):  
Hongwei Ming ◽  
Chen Zhu ◽  
Xiaoying Qin ◽  
Bushra Jabar ◽  
Tao Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electronic Structure ◽  
Power Factor ◽  
Electronic Structures ◽  
Mechanical Milling ◽  
Lattice Thermal Conductivity ◽  
Thermoelectric Performance ◽  
Structure Modulation

A 2.3-fold rise in power factor and 40% drop in the lattice thermal conductivity is realized through micro- and electronic structure modulation with mechanical milling, leading to a large ZT = 0.9 for Cu2SnSe3.

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