Enhanced thermoelectric performance of p-type Bi04Sb16Te3 by excess Te addition

Tae Wan Kim; Jong Wook Roh; Seung Pil Moon; Yeon Sik Ahn; Hee Jung Park; Soon Mok Choi; Jong Young Kim; Sung Wng Kim; Kyu Hyoung Lee

doi:10.1166/jnn.2017.14820

Enhanced thermoelectric performance of p-type Bi₀₄Sb₁₆Te₃ by excess Te addition

Tae Wan Kim, Jong Wook Roh, Seung Pil Moon, Yeon Sik Ahn, Hee Jung Park, Soon Mok Choi, Jong Young Kim, Sung Wng Kim, Kyu Hyoung Lee

Department of Materials Science and Engineering

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

Abstract

Thermoelectric properties of p-type Bi_0.4Sb_1.6Te₃ polycrystalline bulks fabricated by spark plasma sintering from the ingots of stoichiometric Bi_0.4Sb_1.6Te₃ and 0.5–3 wt.% excess Te added compositions were investigated in an effort to demonstrate the feasibility of traditional melt-solidification combined with a pressure induced sintering process. We found that the electronic and thermal transport properties of p-type Bi_2-xSb_xTe₃ could be optimized by excess Te addition due to the suppression of uncontrollable formation of Te-vacancies during the fabrication process. Enhanced thermoelectric performance ZT of 1.1 at 300 K was obtained in 1, 2, and 3 wt.% excess Te added Bi_0.4Sb_1.6Te₃. High ZT and superior controllability of the thermoelectric transport parameters achieved in the present study enable the pressure induced sintering process to be utilized for commercial manufacturing process for solid state cooling and power generation modules.

Original language	English
Pages (from-to)	7681-7684
Number of pages	4
Journal	Journal of Nanoscience and Nanotechnology
Volume	17
Issue number	10
DOIs	https://doi.org/10.1166/jnn.2017.14820
Publication status	Published - 2017 Oct

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (NRF-2015R1A5A1036133).

Publisher Copyright:
Copyright © 2017 American Scientific Publishers All rights reserved.

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Biomedical Engineering
Materials Science(all)
Condensed Matter Physics

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@article{86729f7562f44b298bfdd67bb947a1e9,

title = "Enhanced thermoelectric performance of p-type Bi04Sb16Te3 by excess Te addition",

abstract = "Thermoelectric properties of p-type Bi0.4Sb1.6Te3 polycrystalline bulks fabricated by spark plasma sintering from the ingots of stoichiometric Bi0.4Sb1.6Te3 and 0.5–3 wt.% excess Te added compositions were investigated in an effort to demonstrate the feasibility of traditional melt-solidification combined with a pressure induced sintering process. We found that the electronic and thermal transport properties of p-type Bi2-xSbxTe3 could be optimized by excess Te addition due to the suppression of uncontrollable formation of Te-vacancies during the fabrication process. Enhanced thermoelectric performance ZT of 1.1 at 300 K was obtained in 1, 2, and 3 wt.% excess Te added Bi0.4Sb1.6Te3. High ZT and superior controllability of the thermoelectric transport parameters achieved in the present study enable the pressure induced sintering process to be utilized for commercial manufacturing process for solid state cooling and power generation modules.",

author = "Kim, {Tae Wan} and Roh, {Jong Wook} and Moon, {Seung Pil} and Ahn, {Yeon Sik} and Park, {Hee Jung} and Choi, {Soon Mok} and Kim, {Jong Young} and Kim, {Sung Wng} and Lee, {Kyu Hyoung}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (NRF-2015R1A5A1036133). Publisher Copyright: Copyright {\textcopyright} 2017 American Scientific Publishers All rights reserved.",

year = "2017",

month = oct,

doi = "10.1166/jnn.2017.14820",

language = "English",

volume = "17",

pages = "7681--7684",

journal = "Journal of Nanoscience and Nanotechnology",

issn = "1533-4880",

publisher = "American Scientific Publishers",

number = "10",

}

Enhanced thermoelectric performance of p-type Bi₀₄Sb₁₆Te₃ by excess Te addition. / Kim, Tae Wan; Roh, Jong Wook; Moon, Seung Pil; Ahn, Yeon Sik; Park, Hee Jung; Choi, Soon Mok; Kim, Jong Young; Kim, Sung Wng; Lee, Kyu Hyoung.

In: Journal of Nanoscience and Nanotechnology, Vol. 17, No. 10, 10.2017, p. 7681-7684.

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

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AU - Roh, Jong Wook

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AU - Park, Hee Jung

AU - Choi, Soon Mok

AU - Kim, Jong Young

AU - Kim, Sung Wng

AU - Lee, Kyu Hyoung

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (NRF-2015R1A5A1036133). Publisher Copyright: Copyright © 2017 American Scientific Publishers All rights reserved.

PY - 2017/10

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N2 - Thermoelectric properties of p-type Bi0.4Sb1.6Te3 polycrystalline bulks fabricated by spark plasma sintering from the ingots of stoichiometric Bi0.4Sb1.6Te3 and 0.5–3 wt.% excess Te added compositions were investigated in an effort to demonstrate the feasibility of traditional melt-solidification combined with a pressure induced sintering process. We found that the electronic and thermal transport properties of p-type Bi2-xSbxTe3 could be optimized by excess Te addition due to the suppression of uncontrollable formation of Te-vacancies during the fabrication process. Enhanced thermoelectric performance ZT of 1.1 at 300 K was obtained in 1, 2, and 3 wt.% excess Te added Bi0.4Sb1.6Te3. High ZT and superior controllability of the thermoelectric transport parameters achieved in the present study enable the pressure induced sintering process to be utilized for commercial manufacturing process for solid state cooling and power generation modules.

AB - Thermoelectric properties of p-type Bi0.4Sb1.6Te3 polycrystalline bulks fabricated by spark plasma sintering from the ingots of stoichiometric Bi0.4Sb1.6Te3 and 0.5–3 wt.% excess Te added compositions were investigated in an effort to demonstrate the feasibility of traditional melt-solidification combined with a pressure induced sintering process. We found that the electronic and thermal transport properties of p-type Bi2-xSbxTe3 could be optimized by excess Te addition due to the suppression of uncontrollable formation of Te-vacancies during the fabrication process. Enhanced thermoelectric performance ZT of 1.1 at 300 K was obtained in 1, 2, and 3 wt.% excess Te added Bi0.4Sb1.6Te3. High ZT and superior controllability of the thermoelectric transport parameters achieved in the present study enable the pressure induced sintering process to be utilized for commercial manufacturing process for solid state cooling and power generation modules.

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