Cu-Bi-Se-based pavonite homologue: A promising thermoelectric material with low lattice thermal conductivity

Jung Young Cho, Hyeona Mun, Byungki Ryu, Sang Il Kim, Sungwoo Hwang, Jong Wook Roh, Dae Jin Yang, Weon Ho Shin, Sang Mock Lee, Soon Mok Choi, Dae Joon Kang, Sung Wng Kim, Kyu Hyoung Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Pavonite homologues, Cux+yBi5-ySe8 (1.2 ≤ x ≤ 1.5, 0.1 ≤ y ≤ 0.4), in a polycrystalline bulk form have been synthesized using a conventional solid state sintering technique. Their thermal and electronic transport properties were evaluated for mid-temperature thermoelectric power generation applications. Structural complexity, based on unique substitutional and interstitial Cu atoms in the structure, makes this system attractive as an intrinsic low thermal conductivity material; also the band structure calculations revealed that interstitial Cu atoms generate n-type carrier conduction. Room temperature lattice thermal conductivities ranging between 0.41 W m-1 K-1 and 0.55 W m-1 K -1 were found for Cux+yBi5-ySe8; these values are comparable to those of the state-of-the-art low lattice thermal conductivity systems. These extremely low thermal conductivities combined with the power factors result in the highest ZT = 0.27 at 560 K for Cu 1.9Bi4.6Se8.

Original languageEnglish
Pages (from-to)9768-9774
Number of pages7
JournalJournal of Materials Chemistry A
Volume1
Issue number34
DOIs
Publication statusPublished - 2013 Sep 14

Fingerprint

Thermal conductivity
Atoms
Thermoelectric power
Band structure
Transport properties
Power generation
Sintering
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Cho, Jung Young ; Mun, Hyeona ; Ryu, Byungki ; Kim, Sang Il ; Hwang, Sungwoo ; Roh, Jong Wook ; Yang, Dae Jin ; Shin, Weon Ho ; Lee, Sang Mock ; Choi, Soon Mok ; Kang, Dae Joon ; Kim, Sung Wng ; Lee, Kyu Hyoung. / Cu-Bi-Se-based pavonite homologue : A promising thermoelectric material with low lattice thermal conductivity. In: Journal of Materials Chemistry A. 2013 ; Vol. 1, No. 34. pp. 9768-9774.
@article{7611f54911a545538c3d3ecb1ba1f7a5,
title = "Cu-Bi-Se-based pavonite homologue: A promising thermoelectric material with low lattice thermal conductivity",
abstract = "Pavonite homologues, Cux+yBi5-ySe8 (1.2 ≤ x ≤ 1.5, 0.1 ≤ y ≤ 0.4), in a polycrystalline bulk form have been synthesized using a conventional solid state sintering technique. Their thermal and electronic transport properties were evaluated for mid-temperature thermoelectric power generation applications. Structural complexity, based on unique substitutional and interstitial Cu atoms in the structure, makes this system attractive as an intrinsic low thermal conductivity material; also the band structure calculations revealed that interstitial Cu atoms generate n-type carrier conduction. Room temperature lattice thermal conductivities ranging between 0.41 W m-1 K-1 and 0.55 W m-1 K -1 were found for Cux+yBi5-ySe8; these values are comparable to those of the state-of-the-art low lattice thermal conductivity systems. These extremely low thermal conductivities combined with the power factors result in the highest ZT = 0.27 at 560 K for Cu 1.9Bi4.6Se8.",
author = "Cho, {Jung Young} and Hyeona Mun and Byungki Ryu and Kim, {Sang Il} and Sungwoo Hwang and Roh, {Jong Wook} and Yang, {Dae Jin} and Shin, {Weon Ho} and Lee, {Sang Mock} and Choi, {Soon Mok} and Kang, {Dae Joon} and Kim, {Sung Wng} and Lee, {Kyu Hyoung}",
year = "2013",
month = "9",
day = "14",
doi = "10.1039/c3ta11457k",
language = "English",
volume = "1",
pages = "9768--9774",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "34",

}

Cho, JY, Mun, H, Ryu, B, Kim, SI, Hwang, S, Roh, JW, Yang, DJ, Shin, WH, Lee, SM, Choi, SM, Kang, DJ, Kim, SW & Lee, KH 2013, 'Cu-Bi-Se-based pavonite homologue: A promising thermoelectric material with low lattice thermal conductivity', Journal of Materials Chemistry A, vol. 1, no. 34, pp. 9768-9774. https://doi.org/10.1039/c3ta11457k

Cu-Bi-Se-based pavonite homologue : A promising thermoelectric material with low lattice thermal conductivity. / Cho, Jung Young; Mun, Hyeona; Ryu, Byungki; Kim, Sang Il; Hwang, Sungwoo; Roh, Jong Wook; Yang, Dae Jin; Shin, Weon Ho; Lee, Sang Mock; Choi, Soon Mok; Kang, Dae Joon; Kim, Sung Wng; Lee, Kyu Hyoung.

In: Journal of Materials Chemistry A, Vol. 1, No. 34, 14.09.2013, p. 9768-9774.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cu-Bi-Se-based pavonite homologue

T2 - A promising thermoelectric material with low lattice thermal conductivity

AU - Cho, Jung Young

AU - Mun, Hyeona

AU - Ryu, Byungki

AU - Kim, Sang Il

AU - Hwang, Sungwoo

AU - Roh, Jong Wook

AU - Yang, Dae Jin

AU - Shin, Weon Ho

AU - Lee, Sang Mock

AU - Choi, Soon Mok

AU - Kang, Dae Joon

AU - Kim, Sung Wng

AU - Lee, Kyu Hyoung

PY - 2013/9/14

Y1 - 2013/9/14

N2 - Pavonite homologues, Cux+yBi5-ySe8 (1.2 ≤ x ≤ 1.5, 0.1 ≤ y ≤ 0.4), in a polycrystalline bulk form have been synthesized using a conventional solid state sintering technique. Their thermal and electronic transport properties were evaluated for mid-temperature thermoelectric power generation applications. Structural complexity, based on unique substitutional and interstitial Cu atoms in the structure, makes this system attractive as an intrinsic low thermal conductivity material; also the band structure calculations revealed that interstitial Cu atoms generate n-type carrier conduction. Room temperature lattice thermal conductivities ranging between 0.41 W m-1 K-1 and 0.55 W m-1 K -1 were found for Cux+yBi5-ySe8; these values are comparable to those of the state-of-the-art low lattice thermal conductivity systems. These extremely low thermal conductivities combined with the power factors result in the highest ZT = 0.27 at 560 K for Cu 1.9Bi4.6Se8.

AB - Pavonite homologues, Cux+yBi5-ySe8 (1.2 ≤ x ≤ 1.5, 0.1 ≤ y ≤ 0.4), in a polycrystalline bulk form have been synthesized using a conventional solid state sintering technique. Their thermal and electronic transport properties were evaluated for mid-temperature thermoelectric power generation applications. Structural complexity, based on unique substitutional and interstitial Cu atoms in the structure, makes this system attractive as an intrinsic low thermal conductivity material; also the band structure calculations revealed that interstitial Cu atoms generate n-type carrier conduction. Room temperature lattice thermal conductivities ranging between 0.41 W m-1 K-1 and 0.55 W m-1 K -1 were found for Cux+yBi5-ySe8; these values are comparable to those of the state-of-the-art low lattice thermal conductivity systems. These extremely low thermal conductivities combined with the power factors result in the highest ZT = 0.27 at 560 K for Cu 1.9Bi4.6Se8.

UR - http://www.scopus.com/inward/record.url?scp=84881452679&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881452679&partnerID=8YFLogxK

U2 - 10.1039/c3ta11457k

DO - 10.1039/c3ta11457k

M3 - Article

AN - SCOPUS:84881452679

VL - 1

SP - 9768

EP - 9774

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

SN - 2050-7488

IS - 34

ER -