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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Enhanced Thermoelectric Transport Properties in Cu-added Bi
2
Se
3
Polycrystalline Alloys
Hyungyu Cho, TaeWan Kim, Seung Min Kang, Sanghyun Park, Sang-il Kim
Korean J. Met. Mater.
2023;61(6):431-436. Published online 2023 May 18
DOI:
https://doi.org/10.3365/KJMM.2023.61.6.431
Abstract
The addition of Cu to layered Bi
2
Te
3
-based thermoelectric alloys has been studied as an effective way to enhance thermoelectric transport properties. In this study, the influence of adding Cu to Bi
2
Se
3
alloys, which have the same rhombohedral crystal structure as Bi
2
Te
3
, was investigated by synthesizing a series of Cu
x
Bi
2
Se
3
(
x
.....
More
Web of Science 2
Crossref 2
Electrical, Thermal, and Thermoelectric Transport Properties of Co-Doped
n
-type Cu
0.008
Bi
2
Te
2.6
Se
0.4
Polycrystalline Alloys
Okmin Park, TaeWan Kim, Minsu Heo, Sang Jeong Park, Se Woong Lee, Hyun Kyu Cho, Sang-il Kim
Korean J. Met. Mater.
2023;61(3):206-212. Published online 2023 Feb 24
DOI:
https://doi.org/10.3365/KJMM.2023.61.3.206
Abstract
Bi
2
Te
3
-based alloys have been extensively studied as thermoelectric materials near room temperature. In this study, the electrical, thermal, and thermoelectric transport properties of a series of Co-doped
n
-type Cu
0.008
Bi
2
Te
2.6
Se
0.4
polycrystalline alloys (Cu
0.008
Bi
2−x
Co
x
Te
2.6
Se
0.4
,
x
= 0, 0.03, 0.06, 0.09 and 0.12) are investigated. The electrical conductivity of the Cu
0.008
Bi
1.97
Co
0.03
Te
2.6
Se
0.4
(
x
=.....
More
Web of Science 3
Crossref 3
Optical and Optoelectronic Properties of Bi
2
Te
3
, Sb
2
Te
3
, and Bi
0.5
Sb
1.5
Te
3
Flakes
Bi
2
Te
3
, Sb
2
Te
3
, 및 Bi
0.5
Sb
1.5
Te
3
플레이크들의 광학 및 광전자적 특성
Hyeun Seung Jo, Ju Won Kim, Sang-iL Kim, TaeWan Kim조현승, 김주원, 김상일, 김태완
Korean J. Met. Mater.
2023;61(2):107-114. Published online 2023 Jan 27
DOI:
https://doi.org/10.3365/KJMM.2023.61.2.107
Abstract
In this study, a mechanical exfoliation method was developed for the synthesis of high purity Bi
2
Te
3
, Sb
2
Te
3
, and Bi
0.5
Sb
1.5
Te
3
flakes. The synthesized Bi
2
Te
3
, Sb
2
Te
3
, and Bi
0.5
Sb
1.5
Te
3
flakes were characterized by atomic force microscope, Raman spectroscopy, and photoluminescence (PL). The effect of the thickness of the Bi
2
Te
3
, Sb
2
Te
3
, and Bi
0.5
Sb
1.5
Te
3
flakes.....
More
Study of Phase Formation Behavior and Electronic Transport Properties in the FeSe
2
-FeTe
2
System
FeSe
2
-FeTe
2
계 다결정 소재의 상 형성 거동 및 전기 전도 특성에 관한 연구
Okmin Park, TaeWan Kim, Se Woong Lee, Hyun-Sik Kim, Weon Ho Shin, Jamil Ur Rahman, Sang-il Kim박옥민, 김태완, 이세웅, 김현식, 신원호, , 김상일
Korean J. Met. Mater.
2022;60(4):315-320. Published online 2022 Mar 28
DOI:
https://doi.org/10.3365/KJMM.2022.60.4.315
Abstract
In this study, we investigated the phase formation behavior of the FeSe
2
-FeTe
2
system and the evolution of their thermoelectric transport properties. A series of Fe(Se
1-x
Te
x
)
2
(
x
= 0, 0.2, 0.6, 0.8 and 1) compounds were synthesized by conventional solid-state reaction. Single phase orthorhombic structures were formed, except for FeSe
0.4
Te
1.6
(
x
= 0.2)......
More
Web of Science 12
Crossref 10
Influence of Te Vacancies on the Thermoelectric Properties of
n
-type Cu
0.008
Bi
2
Te
2.7-x
Se
0.3
n
-type Cu
0.008
Bi
2
Te
2.7-x
Se
0.3
열전 합금에서 Te 공공 형성에 의한 열전 성능 연구
Yerim Yang, TaeWan Kim, Seokown Hong, Jiwoo An, Sang-il Kim양예림, 김태완, 홍석원, 안지우, 김상일
Korean J. Met. Mater.
2020;58(10):721-727. Published online 2020 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2020.58.10.721
Abstract
In this study, we report the influence of Te vacancy formation on the thermoelectric properties of
n
-type Cu
0.008
Bi
2
Te
2.7
Se
0.3
alloys, including their electronic and thermal transport properties. Te-deficient Cu
0.008
Bi
2
Te
2.7-x
Se
0.3
(
x
= 0, 0.005, 0.01 and 0.02) samples were systematically synthesized and characterized. Regarding electronic transport properties, carrier concentration was increased with.....
More
Web of Science 7
Crossref 7
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