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Korean J. Met. Mater.
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Korean J. Met. Mater.
2024;62(5):377-384. Published online 2024 May 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.5.377
Abstract
This study explores Mg-composition dependent cycle stability in a Zn
1-x
Mg
x
O Li-ion battery, where battery cycles transition from an electronic transport-limited to an ionic transport limited regime. We investigated the impact of Mg doping in Zn
1-x
Mg
x
O nanocrystals on Li-ion battery performance, focusing on Mg compositions between x=0.05 and x=0.15. Mg composition.....
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Korean J. Met. Mater.
2024;62(2):106-114. Published online 2024 Jan 30
DOI:
https://doi.org/10.3365/KJMM.2024.62.2.106
Abstract
This research elucidates the intricate interplay of lithium content, oxygen pressure, and temperature and their influence on the electrical properties of Lithium-doped zinc oxide (LZO). The electrical behavior of zinc oxide (ZnO), a prominent semiconductor material, can be modulated when doped with lithium (Li). Through systematic experimentation, we demonstrate that.....
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p/n PbSe 다이오드의 제조 및 전기적 특성 평가
S
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b
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,
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L
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황보석호, 이제원
Korean J. Met. Mater.
2024;62(2):94-105. Published online 2024 Jan 30
DOI:
https://doi.org/10.3365/KJMM.2024.62.2.94
Abstract
Lead selenide (PbSe) diodes were fabricated using a magnetron sputtering process system with a pulsed DC power supply and a 2-inch PbSe target with a purity of 5N. For p-type PbSe thin films, the process variable was the oxygen ratio in the mixed gas of argon and oxygen. The electrical.....
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M
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La과 Mn으로 이중 도핑된 n형 Mg
3
La
0.005
Mn
x
SbBi의 열전특성
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주성재, 손지희, 장정인, 민복기, 김봉서
Korean J. Met. Mater.
2024;62(1):45-50. Published online 2023 Dec 29
DOI:
https://doi.org/10.3365/KJMM.2024.62.1.45
Abstract
Mg
3
Sb
2
-based n-type materials are consisted of earth-abundant elements and possess comparable thermoelectric properties with n-type Bi
2
Te
3
at low temperatures, which make them promising candidates for cooling and power generation applications in terms of cost and performance. Substitution of Sb atom with chalcogen elements (Te, Se S) is a conventional method.....
More
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Korean J. Met. Mater.
2023;61(11):842-848. Published online 2023 Oct 29
DOI:
https://doi.org/10.3365/KJMM.2023.61.11.842
Abstract
SnSe
2
alloys have been investigated in recent times as potential
n
-type thermoelectric materials. In this study, the thermoelectric transport properties of a series of Sb-doped SnSe
2
, Sn(Se
1-x
Sb
x
)
2
(
x
= 0, 0.015, 0.03, 0.045, 0.06) alloys are investigated. The electrical conductivity was generally enhanced with Sb doping owing to a large.....
More
Web of Science 2
Crossref 1
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-
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K
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Korean J. Met. Mater.
2023;61(7):489-499. Published online 2023 Jun 21
DOI:
https://doi.org/10.3365/KJMM.2023.61.7.489
Abstract
Cu
3
Sb
1–x–y
Ge
x
In
y
Se
4
(0.02 ≤
x
≤ 0.12; 0.04 ≤
y
≤ 0.08) permingeatite compounds doped with Ge and In were prepared using solid-state synthesis. The phases and microstructures were analyzed, and the charge transport and thermoelectric properties were evaluated according to the Ge and In doping content. Most of the samples.....
More
Crossref 1
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La 도핑된 n형 Mg
3
SbBi 열전소재의 합성 및 열전특성
S
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주성재, 손지희, 장정인, 민복기, 김봉서
Korean J. Met. Mater.
2023;61(6):437-443. Published online 2023 May 18
DOI:
https://doi.org/10.3365/KJMM.2023.61.6.437
Abstract
Mg
3
Sb
2
-based materials are very promising for thermoelectric applications at low temperatures, and are strong candidates to replace n-type Bi
2
Te
3
for cooling and power generation. Substituting Sb atoms with chalcogen elements (S, Se, Te) is a typical method of n-type doping, while doping the Mg site with Group 3 elements (Y,.....
More
Web of Science 1
Crossref 1
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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 1
Crossref 1
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Korean J. Met. Mater.
2023;61(6):422-430. Published online 2023 May 18
DOI:
https://doi.org/10.3365/KJMM.2023.61.6.422
Abstract
Cu–Sb–Se ternary chalcogenide compounds composed of earth-abundant low-toxicity elements are attracting attention as economical and ecofriendly semiconductors. Among them, permingeatite (Cu
3
SbSe
4
) is a potential thermoelectric material with high Seebeck coefficient and low lattice thermal conductivity. However, it is necessary to improve its thermoelectric properties through doping, as it has low.....
More
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Korean J. Met. Mater.
2023;61(5):355-362. Published online 2023 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2023.61.5.355
Abstract
Famatinite (Cu
3
SbS
4
) is a promising p-type thermoelectric material because of its low lattice thermal conductivity and high Seebeck coefficient. In this study, famatinite powders, double-doped with Sn (a B
IV
group element) and In (a B
III
group element) to give Cu
3
Sb
1-x-y
Sn
x
In
y
S
4
(0.02 ≤ x ≤ 0.12 and 0.06 ≤.....
More
Web of Science 1
Crossref 2
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Korean J. Met. Mater.
2023;61(4):277-283. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.277
Abstract
Skinnerite (Cu
3
SbS
3
) has recently attracted attention as a promising thermoelectric material because of its low thermal conductivity. In this study, we performed the solid-state synthesis of Fe-doped skinnerite Cu
3
Sb
1-y
Fe
y
S
3
(y = 0.02−0.06) using mechanical alloying and hot pressing, and examined the samples’ thermoelectric properties relative to Fe doping content. All.....
More
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Korean J. Met. Mater.
2023;61(4):269-276. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.269
Abstract
Permingeatite (Cu
3
SbSe
4
) is a promising thermoelectric material with narrow bandgap energy and large carrier effective mass. However, doping is required to improve its electrical conductivity and thermoelectric properties. In this study, Cu
3
Sb
1−y
(Al/In)
y
Se
4
doped with B
III
-group elements (Al or In) at the Sb sites was synthesized using mechanical alloying followed by.....
More
Web of Science 1
Crossref 1
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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 2
Crossref 2
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Korean J. Met. Mater.
2023;61(2):115-119. Published online 2023 Jan 27
DOI:
https://doi.org/10.3365/KJMM.2023.61.2.115
Abstract
As interest in hydrogen energy grows, eco-friendly methods of producing hydrogen are being explored. CuBi
2
O
4
is one of the p-type semiconductor cathode materials that can be used for photoelectrochemical hydrogen production via environment-friendly water electrolysis. CuBi
2
O
4
has a bandgap of 1.5 – 1.8 eV which allows it to photogenerate electrons.....
More
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Korean J. Met. Mater.
2022;60(12):919-925. Published online 2022 Nov 25
DOI:
https://doi.org/10.3365/KJMM.2022.60.12.919
Abstract
Re
2
Te
5
is considered a potential thermoelectric material because of its intrinsically low thermal conductivity, due to its complex crystal structure. Herein, a series of Se-doped Re
2
Te
5
(Re
2
Te
5-x
Se
x
,
x
= 0, 0.2, 1, and 2) samples were synthesized, and their electrical and thermal transport properties were investigated. Pure orthorhombic Re
2
Te
5
phases.....
More
Web of Science 3
Crossref 3
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Korean J. Met. Mater.
2022;60(12):912-918. Published online 2022 Nov 25
DOI:
https://doi.org/10.3365/KJMM.2022.60.12.912
Abstract
Bi
2
O
2
Se oxyselenide has been actively studied as a potential
n
-type thermoelectric material because of its intrinsically low thermal conductivity and high Seebeck coefficient (S). However, Bi
2
O
2
Se has very low electrical conductivity (σ), resulting in relatively poor thermoelectric performance. Herein, we investigate the effect of Cu addition on the electrical and.....
More
Web of Science 2
Crossref 2
T
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Korean J. Met. Mater.
2022;60(8):593-600. Published online 2022 Jul 12
DOI:
https://doi.org/10.3365/KJMM.2022.60.8.593
Abstract
In this study, mechanical alloying was performed to synthesize permingeatite Cu
3
Sb
1-x-y
Sn
x
Bi
y
Se
4
(0.02 ≤ x ≤ 0.06 and 0.02 ≤ y ≤ 0.04) doped with Sn and Bi. Hot pressing was subsequently conducted to achieve dense sintered bodies. When the Bi content was constant, the carrier concentration increased with the Sn.....
More
Web of Science 2
Crossref 2
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벌크 다결정 SnS / PEDOT:PSS 박막 이중층에서의 변조 도핑을 통한 열전 역률 강화
D
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이동욱
Korean J. Met. Mater.
2022;60(7):531-536. Published online 2022 Jun 3
DOI:
https://doi.org/10.3365/KJMM.2022.60.7.531
Abstract
Modulation doping occurs in a heterojunction where a charge carrier-rich material transfers charge to a carrier-deficient material. The modulation-doped material is intentionally selected to have higher charge carrier mobility than the modulation dopant material, so that the overall electrical conductivity can be boosted. Although this modulation doping strategy has proven.....
More
Web of Science 3
Crossref 3
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Korean J. Met. Mater.
2022;60(7):517-522. Published online 2022 Jun 3
DOI:
https://doi.org/10.3365/KJMM.2022.60.7.517
Abstract
Improving solar energy conversion efficiency and reducing energy loss have become critical issues in recent decades. Photoelectrochemical (PEC) water splitting provides an ideal method for solar energy harvesting and is a key factor in decreasing the use of fossil fuels. Thus, it is extremely important to identify cost-effective, highly active,.....
More
Web of Science 3
Crossref 2
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Korean J. Met. Mater.
2022;60(5):376-383. Published online 2022 Apr 22
DOI:
https://doi.org/10.3365/KJMM.2022.60.5.376
Abstract
Ge-doped tetrahedrites Cu
12
Sb
4-y
Ge
y
S
13
(
y
= 0.1–0.4) were prepared using mechanical alloying and hot pressing. An X-ray diffraction analysis after mechanical alloying showed a single tetrahedrite phase without secondary phases. The tetrahedrite phase was stable after hot pressing at 723 K under 70 MPa. As the Ge content increased, the lattice.....
More
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Ta 도핑된 Zr
0.6-x
Ti
0.4
Ta
x
NiSn n형 하프-호이슬러 소재의 열전특성
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주성재, 손지희, 장정인, 민복기, 김봉서
Korean J. Met. Mater.
2022;60(3):213-219. Published online 2022 Feb 8
DOI:
https://doi.org/10.3365/KJMM.2022.60.3.213
Abstract
Half-Heusler (HH) thermoelectric materials are promising for mid- to high-temperature applications, and
M
NiSn (
M
= Ti, Zr, Hf) is a representative n-type HH alloy. In general, the
M
sites are mixed with isoelectronic elements Ti, Zr, and Hf, to lower the lattice thermal conductivity, and the Sn sites are doped.....
More
Web of Science 1
Crossref 1
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암모니아를 이용한 그래핀 구조 제어 및 고감도 압력 센서로의 적용
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정연욱, 조승근, 문해인, 김영원, 신유진, 박길령, 이정우
Korean J. Met. Mater.
2022;60(3):206-212. Published online 2022 Feb 8
DOI:
https://doi.org/10.3365/KJMM.2022.60.3.206
Abstract
Graphene has been used in various fields because of its excellent mechanical, optical, electrical, and thermal properties. However, its intrinsic low sensitivity to pressure limits its sensor applications. To overcome this drawback, many researchers have tried to improve the sensitivity by controlling the defects on the graphene, but have yet.....
More
Web of Science 3
Crossref 2
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유무기 하이브리드 할라이드 페로브스카이트의 안정성 향상을 위한 연구 동향 리뷰
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설명진, 한정우, 황승환, 김수영
Korean J. Met. Mater.
2022;60(1):1-13. Published online 2021 Dec 10
DOI:
https://doi.org/10.3365/KJMM.2022.60.1.1
Abstract
Because of their superior optical, and electrical properties, lead halide perovskites have emerged as potential materials for light-emitting-diodes. However, some obstacles have yet to be overcome for practical applications including low exciton binding energy, the difficulty of fabricating uniform perovskite films,, and their instability to heat, light, and moisture. In.....
More
Web of Science 9
Crossref 9
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Korean J. Met. Mater.
2021;59(8):560-566. Published online 2021 Jul 5
DOI:
https://doi.org/10.3365/KJMM.2021.59.8.560
Abstract
Tetrahedrite is a promising thermoelectric material mainly due to its low thermal conductivity, a consequence of its complicated crystal structure. However, tetrahedrite has a high hole concentration; therefore, optimizing carrier concentration through doping is required to maximize the power factor. In this study, Te-doped tetrahedrites Cu
12
Sb
4-y
Te
y
S
13
(0.1 ≤ y ≤.....
More
Crossref 1
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잉크젯 인쇄 기술을 이용하여 상대적으로 낮은 온도에서 리튬이 도핑 된 인듐-아연-산화물 트랜지스터의 제작
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최운섭
Korean J. Met. Mater.
2021;59(5):314-320. Published online 2021 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.5.314
Abstract
Inkjet printing is a very attractive technology for printed electronics and a potential alternative to current high cost and multi-chemical lithography processes, for display and other applications in the electronics field. Inkjet technology can be employed to fabricate organic light emitting diodes (OLED), quantum dots displays, and thin-film transistors (TFTs)......
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Web of Science 4
Crossref 4
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Cu 첨가에 따른 p-type Bi
0.5
Sb
1.5
Te
3
및 Bi
0.4
Sb
1.6
Te
3
합금의 양극성 전도 저감 효과
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조현준, 김현식, 손웅희, 김상일
Korean J. Met. Mater.
2020;58(6):439-445. Published online 2020 May 21
DOI:
https://doi.org/10.3365/KJMM.2020.58.6.439
Abstract
In this study, we report how Cu doping can modify the thermoelectric performance of
p
-type Bi
0.5
Sb
1.5
Te3 and Bi
0.4
Sb
1.6
Te3 thermoelectric alloys, including their electronic and thermal transport properties. For electronic transport, the power factors of both Bi
0.5
Sb
1.5
Te3 and Bi0.4Sb1.6Te3 compositions were increased by Cu doping. The origins of the enhanced power.....
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Web of Science 6
Crossref 2
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Korean J. Met. Mater.
2020;58(5):348-352. Published online 2020 Apr 20
DOI:
https://doi.org/10.3365/KJMM.2020.58.5.348
Abstract
Layered post transition metal chalcogenides such as SnSe, SnSe
2
, In
2
Se
3
, and In
4
Se
3
have attracted attention as promising thermoelectric materials due to their intrinsically low lattice thermal conductivities. Recently,
n
-type indium selenide (InSe) based materials have also been suggested as good candidates for thermoelectric materials by optimizing their electrical properties, i.e.,.....
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Web of Science 8
Crossref 8
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Bi-Sb-Te계 합금의 열전물성에 대한 Cu 및 In 첨가 영향
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조현준, 김현식, 김상일
Korean J. Met. Mater.
2019;57(10):673-678. Published online 2019 Sep 23
DOI:
https://doi.org/10.3365/KJMM.2019.57.10.673
Abstract
Herein we report the effect of Cu/In doping on the electronic and thermal transport properties of Bi-Sb-Te thermoelectric alloys. To closely examine the role of each doping element when incorporated in a Bi
0.4
Sb
1.6
Te
3
alloy, different groups of samples were prepared and characterized, including undoped Bi
0.4
Sb
1.6
Te
3
, In single-doped samples and In.....
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Web of Science 9
Crossref 6
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Korean J. Met. Mater.
2019;57(5):328-333. Published online 2019 Apr 10
DOI:
https://doi.org/10.3365/KJMM.2019.57.5.328
Abstract
Tetrahedrite Cu12Sb4S13 has low lattice thermal conductivity because of the lone-pair electrons of Sb, which cause the Cu atoms to vibrate at a low frequency and high amplitude. When the Cu atoms of Cu12Sb4S13 are partially substituted with a transition metal, changes in the Cu vibrations can intensify phonon scattering,.....
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Web of Science 8
Crossref 6
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Korean J. Met. Mater.
2019;57(4):264-269. Published online 2019 Apr 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.4.264
Abstract
Higher manganese silicides (HMSs) MnSi1.74-1.75:Gem (m = 0.01–0.04) were prepared by solid-state reaction and hot pressing. The major phases of the HMSs were Mn27Si47 or Mn4Si7, and a small quantity of Si remained, but the intermetallic compound MnSi was not formed. The lattice constant increased with the substitution of Ge.....
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Web of Science 3
Crossref 3
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