Effects of Cl-Doping on Thermoelectric Transport Properties of Cu 2 Se Prepared by Spark Plasma Sintering

Min Ji Kim, Gil Geun Lee, Woochul Kim, Kyomin Kim, Jang Yeul Tak, Weon Ho Shin, Won Seon Seo, Jisang Hong, Young Soo Lim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x (x = 0–0.08) compounds prepared by spark plasma sintering. Cl-doping resulted in a decrease in the electrical conductivity and an increase in the Seebeck coefficient of the compound due to the donor role of Cl. Furthermore, the incorporation of Cl caused the formation of a secondary CuCl phase, which affected the structural, electrical, and thermal properties of the compounds significantly. Although the melting of CuCl limited the operating temperature to ∼ 620 K, the Cl-doped compounds exhibited significantly reduced lattice thermal conductivity because of the presence of the CuCl secondary phase. The highest ZT of 0.6 at 620 K was achieved in Cu 2 Se 0.92 Cl 0.08 , and the effects of CuCl on the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x compounds are discussed in detail.

Original languageEnglish
Pages (from-to)1958-1964
Number of pages7
JournalJournal of Electronic Materials
Volume48
Issue number4
DOIs
Publication statusPublished - 2019 Apr 15

Fingerprint

Spark plasma sintering
sparks
Transport properties
sintering
transport properties
Doping (additives)
Seebeck coefficient
Seebeck effect
operating temperature
Structural properties
Thermal conductivity
Melting
Electric properties
thermal conductivity
Thermodynamic properties
thermodynamic properties
electrical properties
melting
electrical resistivity
Temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Kim, Min Ji ; Lee, Gil Geun ; Kim, Woochul ; Kim, Kyomin ; Tak, Jang Yeul ; Shin, Weon Ho ; Seo, Won Seon ; Hong, Jisang ; Lim, Young Soo. / Effects of Cl-Doping on Thermoelectric Transport Properties of Cu 2 Se Prepared by Spark Plasma Sintering In: Journal of Electronic Materials. 2019 ; Vol. 48, No. 4. pp. 1958-1964.
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abstract = "We present the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x (x = 0–0.08) compounds prepared by spark plasma sintering. Cl-doping resulted in a decrease in the electrical conductivity and an increase in the Seebeck coefficient of the compound due to the donor role of Cl. Furthermore, the incorporation of Cl caused the formation of a secondary CuCl phase, which affected the structural, electrical, and thermal properties of the compounds significantly. Although the melting of CuCl limited the operating temperature to ∼ 620 K, the Cl-doped compounds exhibited significantly reduced lattice thermal conductivity because of the presence of the CuCl secondary phase. The highest ZT of 0.6 at 620 K was achieved in Cu 2 Se 0.92 Cl 0.08 , and the effects of CuCl on the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x compounds are discussed in detail.",
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Effects of Cl-Doping on Thermoelectric Transport Properties of Cu 2 Se Prepared by Spark Plasma Sintering . / Kim, Min Ji; Lee, Gil Geun; Kim, Woochul; Kim, Kyomin; Tak, Jang Yeul; Shin, Weon Ho; Seo, Won Seon; Hong, Jisang; Lim, Young Soo.

In: Journal of Electronic Materials, Vol. 48, No. 4, 15.04.2019, p. 1958-1964.

Research output: Contribution to journalArticle

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T1 - Effects of Cl-Doping on Thermoelectric Transport Properties of Cu 2 Se Prepared by Spark Plasma Sintering

AU - Kim, Min Ji

AU - Lee, Gil Geun

AU - Kim, Woochul

AU - Kim, Kyomin

AU - Tak, Jang Yeul

AU - Shin, Weon Ho

AU - Seo, Won Seon

AU - Hong, Jisang

AU - Lim, Young Soo

PY - 2019/4/15

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N2 - We present the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x (x = 0–0.08) compounds prepared by spark plasma sintering. Cl-doping resulted in a decrease in the electrical conductivity and an increase in the Seebeck coefficient of the compound due to the donor role of Cl. Furthermore, the incorporation of Cl caused the formation of a secondary CuCl phase, which affected the structural, electrical, and thermal properties of the compounds significantly. Although the melting of CuCl limited the operating temperature to ∼ 620 K, the Cl-doped compounds exhibited significantly reduced lattice thermal conductivity because of the presence of the CuCl secondary phase. The highest ZT of 0.6 at 620 K was achieved in Cu 2 Se 0.92 Cl 0.08 , and the effects of CuCl on the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x compounds are discussed in detail.

AB - We present the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x (x = 0–0.08) compounds prepared by spark plasma sintering. Cl-doping resulted in a decrease in the electrical conductivity and an increase in the Seebeck coefficient of the compound due to the donor role of Cl. Furthermore, the incorporation of Cl caused the formation of a secondary CuCl phase, which affected the structural, electrical, and thermal properties of the compounds significantly. Although the melting of CuCl limited the operating temperature to ∼ 620 K, the Cl-doped compounds exhibited significantly reduced lattice thermal conductivity because of the presence of the CuCl secondary phase. The highest ZT of 0.6 at 620 K was achieved in Cu 2 Se 0.92 Cl 0.08 , and the effects of CuCl on the thermoelectric transport properties of Cl-doped Cu 2 Se 1−x Cl x compounds are discussed in detail.

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