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JeongIn Jang 7 Articles
796 Analysis of Thermoelectric Properties of Hot-deformed Bismuth Telluride Sintered Materials
소성변형을 거친 비스무스 텔루라이드 소결체의 열전특성 분석
Sung-Jae Joo, Ji-Hee Son, JeongIn Jang, Bok-Ki Min, Bong-Seo Kim, JongGan Hong, Dae-Keun Lee, Hyungmo Kim
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 (Bi2Te3)-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..... More

    
45 Thermoelectric Properties of N-type Mg3La0.005MnxSbBi Materials Doped with La and Mn
La과 Mn으로 이중 도핑된 n형 Mg3La0.005MnxSbBi의 열전특성
Sung-Jae Joo, JiHui Son, JeongIn Jang, Bok-Ki Min, Bong-Seo Kim
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
Mg3Sb2-based n-type materials are consisted of earth-abundant elements and possess comparable thermoelectric properties with n-type Bi2Te3 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

                
785 Optimization of Sintering Temperature for the Synthesis of n-type Mg3SbBi0.99Te0.01 Thermoelectric Materials
소결온도 최적화에 의한 Mg3SbBi0.99Te0.01 n형 소재의 열전특성 향상
Sung-Jae Joo, Ji-Hee Son, JeongIn Jang, Bong-Seo Kim, Bok-Ki Min
주성재, 손지희, 장정인, 김봉서, 민복기
Korean J. Met. Mater. 2023;61(10):785-792.   Published online 2023 Sep 25
DOI: https://doi.org/10.3365/KJMM.2023.61.10.785

Abstract
Mg3Sb2-based materials are promising candidates to replace n-type Bi2Te3 for cooling and power generation at low temperatures. Generally, the thermoelectric performance of a material is sensitively affected by synthesis process parameters, and among them, sintering temperature (Ts) is a critical one. In this study, n-type Mg3SbBi0.99Te0.01 polycrystalline samples were fabricated..... More

                
437 Synthesis and Thermoelectric Properties of La-doped n-type Mg3SbBi Materials
La 도핑된 n형 Mg3SbBi 열전소재의 합성 및 열전특성
Sung-Jae Joo, Ji-Hee Son, JeongIn Jang, Bok-Ki Min, Bong-Seo Kim
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
Mg3Sb2-based materials are very promising for thermoelectric applications at low temperatures, and are strong candidates to replace n-type Bi2Te3 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
858 Effects of V Alloying on Thermoelectric Properties of NbFeSb Half-Heusler Materials Codoped with Ti, Zr, and Sn
Sung-Jae Joo, JeongIn Jang, Ji-Hee Son, Bong-Seo Kim, Bok-Ki Min
Korean J. Met. Mater. 2022;60(11):858-864.   Published online 2022 Oct 31
DOI: https://doi.org/10.3365/KJMM.2022.60.11.858

Abstract
NbFeSb-based alloys are promising p-type half-Heusler materials with excellent thermoelectric performance, thermal stability, and naturally abundant constituent elements. Alloying and doping are powerful techniques for enhancing the thermoelectric properties of half-Heusler materials. This study experimentally investigated the effects of V alloying in NbFeSb codoped with Ti, Zr, and Sn. As..... More

                
213 Thermoelectric Properties of Ta-doped Zr0.6-xTi0.4TaxNiSn n-type Half-Heusler Materials
Ta 도핑된 Zr0.6-xTi0.4TaxNiSn n형 하프-호이슬러 소재의 열전특성
Sung-Jae Joo, Ji-Hee Son, JeongIn Jang, Bok-Ki Min, Bong-Seo Kim
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 MNiSn (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
904 Synthesis of Nb0.8Hf0.2FeSb0.98Sn0.02 and Hf0.25Zr0.25Ti0.5NiSn0.98Sb0.02 Half-Heusler Materials and Fabrication of Thermoelectric Generators
Sung-Jae Joo, Ji-Hee Son, JeongIn Jang, Bong-Seo Kim, Bok-Ki Min
Korean J. Met. Mater. 2021;59(12):904-910.   Published online 2021 Nov 19
DOI: https://doi.org/10.3365/KJMM.2021.59.12.904

Abstract
In this study, half-Heusler (HH) thermoelectric materials Nb0.8Hf0.2FeSb0.98Sn0.02 (p-type) and Hf0.25Zr0.25Ti0.5NiSn0.98Sb0.02 (n-type) were synthesized using induction melting and spark plasma sintering. For alloying, a conventional induction melting technique was employed rather than arc melting, for mass production compatibility, and the thermoelectric properties of the materials were analyzed. The maximum dimensionless..... More

                   Web of Science 2  Crossref 2
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