Enhanced thermoelectric performance of GeTe through in situ microdomain and Ge-vacancy control

2019 ◽  
Vol 7 (25) ◽  
pp. 15181-15189 ◽  
Author(s):  
Khasim Saheb Bayikadi ◽  
Raman Sankar ◽  
Chien Ting Wu ◽  
Chengliang Xia ◽  
Yue Chen ◽  
...  
Keyword(s):  
High Temperature ◽  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Vacancy Level

The thermoelectric figure-of-merit (ZT) for GeTe powder is able to be raised from ∼0.8 to 1.37 at high temperature near ∼500 °C by tuning the Ge vacancy level through a reversible in situ route.

scholarly journals Enhanced thermoelectric performance and high-temperature thermal stability of p-type Ag-doped β-Zn4Sb3

2018 ◽  
Vol 6 (9) ◽  
pp. 4079-4087 ◽  
Author(s):  
Lirong Song ◽  
Anders B. Blichfeld ◽  
Jiawei Zhang ◽  
Hidetaka Kasai ◽  
Bo B. Iversen
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Ag Doping ◽  
P Type ◽  
Thermal Stability Of

Ag doping in β-Zn4Sb3 leads to the enhanced thermoelectric figure-of-merit (zT) and improved high-temperature thermal stability.

Extraordinary thermoelectric performance of NaBaBi with degenerate and highly non-parabolic bands compared to LiBaSb and Bi2Te3

2021 ◽  
Author(s):  
Enamul Haque
Keyword(s):  
Fermi Level ◽  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure

This article reports the extraordinary thermoelectric figure of merit (ZT) of NaBaBi: degenerate bands, instead of the valley degeneracy of Bi2Te3, highly non-parabolic bands, and low DOS near the Fermi level of NaBaBi lead to an extraordinary ZTisotropic ≈ 1.60 at 350 K.

A strategy for boosting the thermoelectric performance of famatinite Cu3SbS4

2020 ◽  
Vol 22 (4) ◽  
pp. 2081-2086 ◽  
Author(s):  
Taiki Tanishita ◽  
Koichiro Suekuni ◽  
Hirotaka Nishiate ◽  
Chul-Ho Lee ◽  
Michitaka Ohtaki
Keyword(s):  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Co Substitution

Co-substitution of Ge and P for Sb in Cu3SbS4 famatinite boosted dimensionless thermoelectric figure of merit.

Thermoelectric Properties of Semiconducting Intermetallic Compounds: FeGa3and RuGa3

2003 ◽  
Vol 793 ◽  
Author(s):  
Y. Amagai ◽  
A. Yamamoto ◽  
C. H. Lee ◽  
H. Takazawa ◽  
T. Noguchi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Seebeck Coefficient ◽  
Transport Properties ◽  
Figure Of Merit ◽  
Room Temperature ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
High Seebeck Coefficient

ABSTRACTWe report transport properties of polycrystalline TMGa3(TM = Fe and Ru) compounds in the temperature range 313K<T<973K. These compounds exhibit semiconductorlike behavior with relatively high Seebeck coefficient, electrical resistivity, and Hall carrier concentrations at room temperature in the range of 1017- 1018cm−3. Seebeck coefficient measurements reveal that FeGa3isn-type material, while the Seebeck coefficient of RuGa3changes signs rapidly from large positive values to large negative values around 450K. The thermal conductivity of these compounds is estimated to be 3.5Wm−1K−1at room temperature and decreased to 2.5Wm−1K−1for FeGa3and 2.0Wm−1K−1for RuGa3at high temperature. The resulting thermoelectric figure of merit,ZT, at 945K for RuGa3reaches 0.18.

The effects of Ge doping on the thermoelectric performance of p-type polycrystalline SnSe

RSC Advances ◽  
2016 ◽  
Vol 6 (115) ◽  
pp. 114825-114829 ◽  
Author(s):  
Tessera Alemneh Wubieneh ◽  
Cheng-Lung Chen ◽  
Pai Chun Wei ◽  
Szu-Yuan Chen ◽  
Yang-Yuan Chen
Keyword(s):  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
P Type ◽  
Ge Doping

Ge doping enables to enhance the thermoelectric figure of merit of SnSe..

High thermoelectric performance of topological half-Heusler compound LaPtBi achieved by hydrostatic pressure

2020 ◽  
Vol 22 (26) ◽  
pp. 14621-14629 ◽  
Author(s):  
Suiting Ning ◽  
Shan Huang ◽  
Ziye Zhang ◽  
Renqi Zhang ◽  
Ning Qi ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Heusler Compound

The thermoelectric figure of merit (ZT) in LaPtBi shows an overall increase with increasing hydrostatic pressure.

High thermoelectric performance for an Ag2Se-based material prepared by a wet chemical method

2020 ◽  
Vol 4 (3) ◽  
pp. 875-880
Author(s):  
D. Li ◽  
J. H. Zhang ◽  
J. M. Li ◽  
J. Zhang ◽  
X. Y. Qin
Keyword(s):  
Figure Of Merit ◽  
Chemical Method ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Wet Chemical Method ◽  
Thermoelectric Figure ◽  
Chemical Route ◽  
Alloy Nanocrystals ◽  
Wet Chemical

Herein, a facile solution chemical route has been developed for synthesis of Ag2Se-based alloy nanocrystals and high thermoelectric figure of merit has been obtained.

High thermoelectric performance of polycrystalline In4Se3−δ(CuI)x: synergistic effects of the Se-deficiency and CuI-doping

2016 ◽  
Vol 3 (12) ◽  
pp. 1566-1571 ◽  
Author(s):  
Yan-Chun Chen ◽  
Hua Lin ◽  
Li-Ming Wu
Keyword(s):  
Synergistic Effect ◽  
Power Factor ◽  
Figure Of Merit ◽  
Synergistic Effects ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Se Deficiency

Synergistic effect of Se-deficiency and CuI-doping significantly enhances the thermoelectric figure-of-merit of the n-type polycrystalline In4Se3-based materials via improving the power factor. With In4Se2.95(CuI)0.01, ZT = 1.34 at 723 K, the highest value obtained for Pb-free polycrystalline In4Se3-based materials to date.

Regulation of Ge Vacancies through Sm Doping boosting Superior Thermoelectric Performance in GeTe

2022 ◽  
Author(s):  
Tingdong Zhang ◽  
Shuping Deng ◽  
Xiaodie Zhao ◽  
Xuefeng Ruan ◽  
Ning Qi ◽  
...  
Keyword(s):  
Transport Properties ◽  
Thermal Transport ◽  
Figure Of Merit ◽  
Thermoelectric Performance ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Thermal Transport Properties ◽  
P Type

A high thermoelectric figure of merit ZT of 2.5 at 730 K is achieved in p-type Ge1−xSmxTe through synergetic optimization of electrical and thermal transport properties. Sm doping effectively suppresses...

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