Thermoelectric Properties of Off-Stoichiometric Bi2Te2Se Compounds

Bong Seo Kim; Goeun Lee; Hye Jin Lim; Jeongin Jang; Ji Eun Lee; Bok Ki Min; Sung Jae Joo; Sungjin Park; Byung ki Ryu; Ho Seong Lee

doi:10.1007/s11664-020-08258-9

Thermoelectric Properties of Off-Stoichiometric Bi₂Te₂Se Compounds

Bong Seo Kim, Goeun Lee, Hye Jin Lim, Jeongin Jang, Ji Eun Lee, Bok Ki Min, Sung Jae Joo, Sungjin Park, Byung ki Ryu, Ho Seong Lee

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report the thermoelectric characterization of off-stoichiometric Bi₂Te₂Se compounds fabricated with high energy ball milling followed by spark plasma sintering. Among the investigated off-stoichiometric Bi₂Te₂Se compounds, Bi₂Te_1.95Se_1.05 showed a peak ZT of 0.76 at 523 K. We observed the scattering mode change in Bi₂Te_1.95Se_1.05 compounds. From our results, the off-stoichiometric Bi₂Te₂Se compounds can be applied as n-type material for power generation at elevated temperature.

Original language	English
Pages (from-to)	5308-5316
Number of pages	9
Journal	Journal of Electronic Materials
Volume	49
Issue number	9
DOIs	https://doi.org/10.1007/s11664-020-08258-9
State	Published - 1 Sep 2020

Keywords

BiTeSe
off-stoichiometry
scattering mode
thermoelectric properties

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10.1007/s11664-020-08258-9

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title = "Thermoelectric Properties of Off-Stoichiometric Bi2Te2Se Compounds",

abstract = "We report the thermoelectric characterization of off-stoichiometric Bi2Te2Se compounds fabricated with high energy ball milling followed by spark plasma sintering. Among the investigated off-stoichiometric Bi2Te2Se compounds, Bi2Te1.95Se1.05 showed a peak ZT of 0.76 at 523 K. We observed the scattering mode change in Bi2Te1.95Se1.05 compounds. From our results, the off-stoichiometric Bi2Te2Se compounds can be applied as n-type material for power generation at elevated temperature.",

keywords = "BiTeSe, off-stoichiometry, scattering mode, thermoelectric properties",

author = "Kim, {Bong Seo} and Goeun Lee and Lim, {Hye Jin} and Jeongin Jang and Lee, {Ji Eun} and Min, {Bok Ki} and Joo, {Sung Jae} and Sungjin Park and Ryu, {Byung ki} and Lee, {Ho Seong}",

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doi = "10.1007/s11664-020-08258-9",

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T1 - Thermoelectric Properties of Off-Stoichiometric Bi2Te2Se Compounds

AU - Kim, Bong Seo

AU - Lee, Goeun

AU - Lim, Hye Jin

AU - Jang, Jeongin

AU - Lee, Ji Eun

AU - Min, Bok Ki

AU - Joo, Sung Jae

AU - Park, Sungjin

AU - Ryu, Byung ki

AU - Lee, Ho Seong

PY - 2020/9/1

Y1 - 2020/9/1

N2 - We report the thermoelectric characterization of off-stoichiometric Bi2Te2Se compounds fabricated with high energy ball milling followed by spark plasma sintering. Among the investigated off-stoichiometric Bi2Te2Se compounds, Bi2Te1.95Se1.05 showed a peak ZT of 0.76 at 523 K. We observed the scattering mode change in Bi2Te1.95Se1.05 compounds. From our results, the off-stoichiometric Bi2Te2Se compounds can be applied as n-type material for power generation at elevated temperature.

AB - We report the thermoelectric characterization of off-stoichiometric Bi2Te2Se compounds fabricated with high energy ball milling followed by spark plasma sintering. Among the investigated off-stoichiometric Bi2Te2Se compounds, Bi2Te1.95Se1.05 showed a peak ZT of 0.76 at 523 K. We observed the scattering mode change in Bi2Te1.95Se1.05 compounds. From our results, the off-stoichiometric Bi2Te2Se compounds can be applied as n-type material for power generation at elevated temperature.

KW - BiTeSe

KW - off-stoichiometry

KW - scattering mode

KW - thermoelectric properties

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DO - 10.1007/s11664-020-08258-9

M3 - Article

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EP - 5316

JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

IS - 9

ER -

Thermoelectric Properties of Off-Stoichiometric Bi₂Te₂Se Compounds

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