Thermoelectric properties of Bi2O2Se-x%AgSnSe2 composites via liquid assisted shear exfoliation- restacking process

Xin Niu; Yuheng Gao; Lin Pan; Changchun Chen; Yifeng Wang

doi:10.1016/j.jallcom.2022.166087

Thermoelectric properties of Bi₂O₂Se-x%AgSnSe₂ composites via liquid assisted shear exfoliation- restacking process

Xin Niu, Yuheng Gao, Lin Pan, Changchun Chen, Yifeng Wang

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

In this study, the thermoelectric properties of Bi₂O₂Se-x%AgSnSe₂ composites via liquid assisted shear exfoliation- restacking (LASE-R) method were investigated. The results show that Ag can diffuse into Bi₂O₂Se to further improve the electron content and the electrical conductivity. Meanwhile, the absolute Seebeck coefficient gets a little deterioration with an increase in the electron content and the effective mass. Besides, the rest AgSnSe₂ can further reduce the lattice thermal conductivity of Bi₂O₂Se through enhanced interfaces and mass fluctuation scattering of the phonons by compositing with AgSnSe₂. Finally, a ZT_max of 0.58 for Bi₂O₂Se-1%AgSnSe₂ was obtained, which is 1.24 times that of Bi₂O₂Se.

Original language	English
Article number	166087
Journal	Journal of Alloys and Compounds
Volume	921
DOIs	https://doi.org/10.1016/j.jallcom.2022.166087
State	Published - 15 Nov 2022

Keywords

AgSnSe
BiOSe
Shear exfoliation
Thermoelectric
ZT

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10.1016/j.jallcom.2022.166087

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title = "Thermoelectric properties of Bi2O2Se-x%AgSnSe2 composites via liquid assisted shear exfoliation- restacking process",

abstract = "In this study, the thermoelectric properties of Bi2O2Se-x%AgSnSe2 composites via liquid assisted shear exfoliation- restacking (LASE-R) method were investigated. The results show that Ag can diffuse into Bi2O2Se to further improve the electron content and the electrical conductivity. Meanwhile, the absolute Seebeck coefficient gets a little deterioration with an increase in the electron content and the effective mass. Besides, the rest AgSnSe2 can further reduce the lattice thermal conductivity of Bi2O2Se through enhanced interfaces and mass fluctuation scattering of the phonons by compositing with AgSnSe2. Finally, a ZTmax of 0.58 for Bi2O2Se-1%AgSnSe2 was obtained, which is 1.24 times that of Bi2O2Se.",

keywords = "AgSnSe, BiOSe, Shear exfoliation, Thermoelectric, ZT",

author = "Xin Niu and Yuheng Gao and Lin Pan and Changchun Chen and Yifeng Wang",

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year = "2022",

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doi = "10.1016/j.jallcom.2022.166087",

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T1 - Thermoelectric properties of Bi2O2Se-x%AgSnSe2 composites via liquid assisted shear exfoliation- restacking process

AU - Niu, Xin

AU - Gao, Yuheng

AU - Pan, Lin

AU - Chen, Changchun

AU - Wang, Yifeng

PY - 2022/11/15

Y1 - 2022/11/15

N2 - In this study, the thermoelectric properties of Bi2O2Se-x%AgSnSe2 composites via liquid assisted shear exfoliation- restacking (LASE-R) method were investigated. The results show that Ag can diffuse into Bi2O2Se to further improve the electron content and the electrical conductivity. Meanwhile, the absolute Seebeck coefficient gets a little deterioration with an increase in the electron content and the effective mass. Besides, the rest AgSnSe2 can further reduce the lattice thermal conductivity of Bi2O2Se through enhanced interfaces and mass fluctuation scattering of the phonons by compositing with AgSnSe2. Finally, a ZTmax of 0.58 for Bi2O2Se-1%AgSnSe2 was obtained, which is 1.24 times that of Bi2O2Se.

AB - In this study, the thermoelectric properties of Bi2O2Se-x%AgSnSe2 composites via liquid assisted shear exfoliation- restacking (LASE-R) method were investigated. The results show that Ag can diffuse into Bi2O2Se to further improve the electron content and the electrical conductivity. Meanwhile, the absolute Seebeck coefficient gets a little deterioration with an increase in the electron content and the effective mass. Besides, the rest AgSnSe2 can further reduce the lattice thermal conductivity of Bi2O2Se through enhanced interfaces and mass fluctuation scattering of the phonons by compositing with AgSnSe2. Finally, a ZTmax of 0.58 for Bi2O2Se-1%AgSnSe2 was obtained, which is 1.24 times that of Bi2O2Se.

KW - AgSnSe

KW - BiOSe

KW - Shear exfoliation

KW - Thermoelectric

KW - ZT

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U2 - 10.1016/j.jallcom.2022.166087

DO - 10.1016/j.jallcom.2022.166087

M3 - 文章

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SN - 0925-8388

VL - 921

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 166087

ER -

Thermoelectric properties of Bi₂O₂Se-x%AgSnSe₂ composites via liquid assisted shear exfoliation- restacking process

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Keywords

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