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The Mechanism Behind the High zT of SnSe2 Added SnSe at High Temperatures
SnSe2 결함 도입으로 인한 SnSe의 고온 열전성능 증대 메커니즘
JunSu Kim, Seong-Mee Hwang, Hyunjin Park, Yinglu Tang, Won-Seon Seo, Chae Woo Ryu, Heesun Yang, Weon Ho Shin, Hyun-Sik Kim
김준수, 황성미, 박현진, Yinglu Tang, 서원선, 류채우, 양희선, 신원호, 김현식
Korean J. Met. Mater. 2023;61(11):857-866.   Published online 2023 Oct 29
DOI: https://doi.org/10.3365/KJMM.2023.61.11.857

SnSe is a promising thermoelectric material due to its low toxicity, low thermal conductivity, and multiple valence band structures, which are ideal for high electronic transport properties. The multiple valence band structure has attracted many attempts to engineer the carrier concentration of the SnSe via doping, to place its fermi..... More

Characterization of Electronic Transport Properties of Narrow-Band Gap Fe(Se1-xTex)2 Alloys via the Two-Band Model
Two-Band 모델을 이용한 작은 밴드 갭을 가진 Fe(Se1-xTex)2 열전합금의 전기적 수송 특성 분석
Seong-Mee Hwang, Sang-il Kim, Min-Su Heo, Kiyoung Lee, Heesun Yang, Won-Seon Seo, Hyun-Sik Kim
황성미, 김상일, 허민수, 이기영, 양희선, 서원선, 김현식
Korean J. Met. Mater. 2023;61(2):98-106.   Published online 2023 Jan 27
DOI: https://doi.org/10.3365/KJMM.2023.61.2.98

Environmentally sustainable thermoelectric technologies can be more broadly applied in industries once the performance of thermoelectric materials is improved. Several approaches have been proposed to improve the electronic transport properties of thermoelectric materials. The effects of each approach on the electronic properties can be evaluated by changes in the band..... More

Approaches to Estimate the Magnitude of Phonon Scattering via Point Defects in Mo(Se1-xTex)2 Thermoelectric Alloys
Mo(Se1-xTex)2 열전합금의 점 결함에 의한 포논 산란 효과 분석
You-Jong Lee, Sang-il Kim, Seong-Mee Hwang, Jeong-Yeon Kim, Won-Seon Seo, Hyun-Sik Kim
이유종, 김상일, 황성미, 김정연, 서원선, 김현식
Korean J. Met. Mater. 2023;61(1):38-45.   Published online 2022 Dec 28
DOI: https://doi.org/10.3365/KJMM.2023.61.1.38

One of the most popular routes used to improve the thermoelectric performance of materials is to suppress their lattice thermal conductivities. Thermoelectric performance is characterized by a figure-of-merit zT, which is defined as σS2T/(κe + κl), where the σ, S, T, κe, and κl are the electrical conductivity, Seebeck coefficient,..... More

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