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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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소성변형을 거친 비스무스 텔루라이드 소결체의 열전특성 분석
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주성재, 손지희, 장정인, 민복기, 김봉서, 홍종간, 이대근, 김형모
Korean J. Met. Mater.
2024;62(10):796-802. Published online 2024 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.10.796
Abstract
Bismuth telluride (Bi
2
Te
3
)-based alloys are widely used for thermoelectric cooling and power generation at low temperatures, and they are the only commercially available materials for thermoelectric applications below 500 K. The rhombohedral unit cell with a large
c/a
lattice constant ratio consisting of - Te-Bi-Te-Bi-Te- stacked layers inevitably brings about.....
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Korean J. Met. Mater.
2024;62(5):385-392. Published online 2024 May 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.5.385
Abstract
Because n-type Bi
2
Te
3
-based materials exhibit lower thermoelectric performance than p-type materials and because their thermoelectric properties are sensitively changed by the composition and carrier concentration, optimizing these aspects in n-type materials is necessary to improve the thermoelectric figure of merit (ZT). In this study, the thermoelectric performance of n-type Bi
2
Te
3
-based.....
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Korean J. Met. Mater.
2018;56(7):544-550. Published online 2018 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.7.544
Abstract
Iodine-doped n-type Bi
2-x
Sb
x
Te
3-y
Se
y
:I
m
(x = 0.1–0.2, y = 0.15–0.6, and m = 0.0025–0.005) quaternary solid solutions were prepared by encapsulated melting (EM) and hot pressing (HP). The lattice constants of the resulting materials decreased with increasing Sb and Se contents, whereas the amount of I dopant was too small to.....
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Crossref 8
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Korean J. Met. Mater.
2018;56(1):66-71. Published online 2018 Jan 1
DOI:
https://doi.org/10.3365/KJMM.2018.56.1.66
Abstract
Bi
2-x
Sb
x
Te
3
(x = 1.4–1.7) solid solutions were synthesized by mechanical alloying (MA) and consolidated by hot pressing (HP), and their charge transport and thermoelectric properties were examined. The relative densities of the hot-pressed specimens were higher than 96% on average. As the Sb content was increased, the lattice constants decreased,.....
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Crossref 5
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열간 압축 방법으로 제작된 Bi
2-x
Sb
x
Te
3
열전소재 복합체에서 Sb 함량이 전하수송과 출력인자에 미치는 효과
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임영수, 이순일
Korean J. Met. Mater.
2017;55(9):651-656. Published online 2017 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2017.55.9.651
Abstract
We report the effects of Sb content on the charge transport and power factor of Bi
2-x
Sb
x
Te
3
(1.56 ≤
χ
≤ 1.74) compounds prepared by hot pressing. From the temperature-dependence of the electrical conductivity, it was found that the charge transport in the compounds was predominantly governed by acoustic phonon scattering, and additionally affected.....
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Crossref 3
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열간 압축 방법으로 제작된 Bi
0.42
Sb
1.58
Te
3
열전소재 복합체에서 Cu 도핑이 출력인자에 미치는 효과에 대한 연구
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임영수, 송민석, 이순일, 서원선
Korean J. Met. Mater.
2017;55(6):427-431. Published online 2017 Jun 1
DOI:
https://doi.org/10.3365/KJMM.2017.55.6.427
Abstract
We report the effects of incorporated Cu on the thermoelectric transport properties of Bi
0.42
Sb
1.58
Te
3
compounds prepared by the hot pressing method. The hole concentration in the compound increased significantly with the increase in the Cu content. The acceptor role of Cu was manifested by Hall measurements and also by the.....
More
Crossref 4
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