Influence of Ba                         2+                          doping on the thermoelectric properties of BiCuSeO fabricated by spark plasma sintering

K. Park; D. H. Kim; H. Y. Hong; G. W. Jung; J. W. Pi

doi:10.1016/j.ceramint.2018.10.190

Influence of Ba ²⁺ doping on the thermoelectric properties of BiCuSeO fabricated by spark plasma sintering

K. Park, D. H. Kim, H. Y. Hong, G. W. Jung, J. W. Pi

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

10 Citations (Scopus)

Abstract

We studied the influence of Ba ²⁺ doping on the thermoelectric properties of the p-type Bi _1–x Ba _x CuSeO (0 ≤ x ≤ 0.21) fabricated by spark plasma sintering. The substitution of Ba ²⁺ for Bi ³⁺ gradually increased the electrical and thermal conductivities and decreased the Seebeck coefficient, which were due to the increased hole concentration. The largest value of dimensionless figure-of-merit (0.57) was obtained for the Bi _0.86 Ba _0.14 CuSeO at 500 °C, which was over three times greater than that of pristine BiCuSeO (0.18) at 500 °C. We believe that the thermoelectric properties of BiCuSeO were substantially enhanced through the partial substitution of Ba ²⁺ for Bi ³⁺ .

Original language	English
Pages (from-to)	9604-9610
Number of pages	7
Journal	Ceramics International
Volume	45
Issue number	7
DOIs	https://doi.org/10.1016/j.ceramint.2018.10.190
Publication status	Published - 2019 May
Externally published	Yes

Keywords

Electrical conductivity
Electrical properties
Electron microscopy
Microstructure-final
Sintering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2018.10.190

Cite this

Influence of Ba ²⁺ doping on the thermoelectric properties of BiCuSeO fabricated by spark plasma sintering . / Park, K.; Kim, D. H.; Hong, H. Y. et al.
In: Ceramics International, Vol. 45, No. 7, 05.2019, p. 9604-9610.

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

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title = " Influence of Ba 2+ doping on the thermoelectric properties of BiCuSeO fabricated by spark plasma sintering ",

abstract = " We studied the influence of Ba 2+ doping on the thermoelectric properties of the p-type Bi 1–x Ba x CuSeO (0 ≤ x ≤ 0.21) fabricated by spark plasma sintering. The substitution of Ba 2+ for Bi 3+ gradually increased the electrical and thermal conductivities and decreased the Seebeck coefficient, which were due to the increased hole concentration. The largest value of dimensionless figure-of-merit (0.57) was obtained for the Bi 0.86 Ba 0.14 CuSeO at 500 °C, which was over three times greater than that of pristine BiCuSeO (0.18) at 500 °C. We believe that the thermoelectric properties of BiCuSeO were substantially enhanced through the partial substitution of Ba 2+ for Bi 3+ . ",

keywords = "Electrical conductivity, Electrical properties, Electron microscopy, Microstructure-final, Sintering",

author = "K. Park and Kim, {D. H.} and Hong, {H. Y.} and Jung, {G. W.} and Pi, {J. W.}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2017R1D1A1B03031196 ). Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1B03031196). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd and Techna Group S.r.l.",

year = "2019",

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AU - Kim, D. H.

AU - Hong, H. Y.

AU - Jung, G. W.

AU - Pi, J. W.

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2017R1D1A1B03031196 ). Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1B03031196). Publisher Copyright: © 2018 Elsevier Ltd and Techna Group S.r.l.

PY - 2019/5

Y1 - 2019/5

N2 - We studied the influence of Ba 2+ doping on the thermoelectric properties of the p-type Bi 1–x Ba x CuSeO (0 ≤ x ≤ 0.21) fabricated by spark plasma sintering. The substitution of Ba 2+ for Bi 3+ gradually increased the electrical and thermal conductivities and decreased the Seebeck coefficient, which were due to the increased hole concentration. The largest value of dimensionless figure-of-merit (0.57) was obtained for the Bi 0.86 Ba 0.14 CuSeO at 500 °C, which was over three times greater than that of pristine BiCuSeO (0.18) at 500 °C. We believe that the thermoelectric properties of BiCuSeO were substantially enhanced through the partial substitution of Ba 2+ for Bi 3+ .

AB - We studied the influence of Ba 2+ doping on the thermoelectric properties of the p-type Bi 1–x Ba x CuSeO (0 ≤ x ≤ 0.21) fabricated by spark plasma sintering. The substitution of Ba 2+ for Bi 3+ gradually increased the electrical and thermal conductivities and decreased the Seebeck coefficient, which were due to the increased hole concentration. The largest value of dimensionless figure-of-merit (0.57) was obtained for the Bi 0.86 Ba 0.14 CuSeO at 500 °C, which was over three times greater than that of pristine BiCuSeO (0.18) at 500 °C. We believe that the thermoelectric properties of BiCuSeO were substantially enhanced through the partial substitution of Ba 2+ for Bi 3+ .

KW - Electrical conductivity

KW - Electrical properties

KW - Electron microscopy

KW - Microstructure-final

KW - Sintering

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