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Theoretical Maximum Thermoelectric Performance of Cu-doped and Electric Current Pulse-treated Bi-Sb-Te Alloys
Cu 도핑 및 Electric Current Pulse 공정에 의한 Bi-Sb-Te계 열전소재의 최대 열전성능지수 예측
Joonha Lee, Hyunjin Park, Junsu Kim, Won-Seon Seo, Sang-il Kim, Hyun-Sik Kim
이준하, 박현진, 김준수, 서원선, 김상일, 김현식
Korean J. Met. Mater. 2024;62(7):550-557.   Published online 2024 Jun 28
DOI: https://doi.org/10.3365/KJMM.2024.62.7.550

Abstract
Bi2Te3 shows high thermoelectric performance near room temperature, making it the most widely used material in thermoelectric cooling applications. Cu doping has been found to be effective in improving the thermoelectric performance of Bi2Te3. However, due to the problem of easy migration of Cu ions, the stability of Cu-doped Bi2Te3..... More

                
Estimation of Maximum <i>zT</i> in Cu<sub>3</sub>SbSe<sub>4</sub> for Different Starting Materials Content
시작물질 농도 제어에 따른 Cu3SbSe4 열전소재의 최대 열전성능지수 예측
Minkyu Lee, Seong-Mee Hwang, Se Jun Kim, Won-Seon Seo, Sang-il Kim, Hyun-Sik Kim
이민규, 황성미, 김세준, 서원선, 김상일, 김현식
Korean J. Met. Mater. 2024;62(6):487-493.   Published online 2024 May 31
DOI: https://doi.org/10.3365/KJMM.2024.62.6.487

Abstract
Cu3SbSe4 is considered a promising thermoelectric material because of its large effective mass and low thermal conductivity, originating from its unique lattice structure. However, Cu3SbSe4 has intrinsically low carrier concentration and relatively high electric resistance which limit performance. Recently, a zT improvement in Cu3SbSe4 was reported where doping/precipitation is controlled..... More

                
Estimation of the Highest Thermoelectric Performance of the Bi-Doped SnTe at Room Temperature
Bi 도핑에 따른 SnTe의 상온 최대 열전성능지수 예측
Joonha Lee, Hyunjin Park, Jeong-Yeon Kim, Won-Seon Seo, Heesun Yang, Umut Aydemir, Se Yun Kim, Weon Ho Shin, Hyun-Sik Kim
이준하, 박현진, 김정연, 서원선, 양희선, Umut Aydemir, 김세윤, 신원호, 김현식
Korean J. Met. Mater. 2023;61(12):915-922.   Published online 2023 Nov 30
DOI: https://doi.org/10.3365/KJMM.2023.61.12.915

Abstract
SnTe has drawn much attention due to its Pb-free composition along with tunable electronic and lattice structures. However, its intrinsically high defect concentration and high lattice thermal conductivity (κ1) have hindered its application in devices. Recently, Bi doping at Sn-sites in Sn1-xBixTe (x = 0.0 – 0.08) has been demonstrated..... More

                   Web of Science 1
Influence of Cu Doping on Bipolar Conduction Suppression for <i>p</i>-type Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> and Bi<sub>0.4</sub>Sb<sub>1.6</sub>Te<sub>3</sub> Alloys
Cu 첨가에 따른 p-type Bi0.5Sb1.5Te3 및 Bi0.4Sb1.6Te3 합금의 양극성 전도 저감 효과
Hyun-Jun Cho, Hyun-Sik Kim, Woong-hee Sohn, Sang-il Kim
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 Bi0.5Sb1.5Te3 and Bi0.4Sb1.6Te3 thermoelectric alloys, including their electronic and thermal transport properties. For electronic transport, the power factors of both Bi0.5Sb1.5Te3 and Bi0.4Sb1.6Te3 compositions were increased by Cu doping. The origins of the enhanced power..... More

                   Web of Science 6  Crossref 2
Enhanced Thermoelectric Transport Properties of <i>n</i>-type InSe by Sn doping
Sung-sil Choo, Seok-won Hong, Hyun-Sik Kim, Sang-il Kim
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, SnSe2, In2Se3, and In4Se3 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.,..... More

                   Web of Science 9  Crossref 8
Effect of Cu/In Doping on the Thermoelectric Transport Properties of Bi-Sb-Te Alloys
Bi-Sb-Te계 합금의 열전물성에 대한 Cu 및 In 첨가 영향
Hyun Jun Cho, Hyun-Sik Kim, Sang-Il Kim
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 Bi0.4Sb1.6Te3 alloy, different groups of samples were prepared and characterized, including undoped Bi0.4Sb1.6Te3, In single-doped samples and In..... More

                   Web of Science 9  Crossref 6
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