Composition-dependent charge transport and temperature-dependent density of state effective mass interpreted by temperature-normalized Pisarenko plot in Bi2- xSbxTe3 compounds

Tae Ho An; Young Soo Lim; Mi Jin Park; Jang Yeul Tak; Soonil Lee; Hyung Koun Cho; Jun Young Cho; Chan Park; Won Seon Seo

doi:10.1063/1.4961106

Composition-dependent charge transport and temperature-dependent density of state effective mass interpreted by temperature-normalized Pisarenko plot in Bi_{2- x}Sb_xTe₃ compounds

Tae Ho An
, Young Soo Lim
, Mi Jin Park
, Jang Yeul Tak
, Soonil Lee
, Hyung Koun Cho
, Jun Young Cho
, Chan Park
, Won Seon Seo

Department of Advanced Materials Science and Engineering

Korea Institute of Ceramic Engineering And Technology
Seoul National University
Pukyong National University
Sungkyunkwan University

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

23 Scopus citations

Abstract

Composition-dependent charge transport and temperature-dependent density of state effective mass-dependent Seebeck coefficient were investigated in Bi_2-xSb_xTe₃ (x = 1.56-1.68) compounds. The compounds were prepared by the spark plasma sintering of high-energy ball-milled powder. High-temperature Hall measurements revealed that the charge transport in the compounds was governed dominantly by phonon scattering and influenced additionally by alloy scattering depending on the amount of Sb. Contrary effects of Sb content on the Seebeck coefficient were discussed in terms of carrier concentration and density of state effective mass, and it was elucidated by temperature-normalized Pisarenko plot for the first time.

Original language	English
Article number	104812
Journal	APL Materials
Volume	4
Issue number	10
DOIs	https://doi.org/10.1063/1.4961106
State	Published - 1 Oct 2016

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title = "Composition-dependent charge transport and temperature-dependent density of state effective mass interpreted by temperature-normalized Pisarenko plot in Bi2- xSbxTe3 compounds",

abstract = "Composition-dependent charge transport and temperature-dependent density of state effective mass-dependent Seebeck coefficient were investigated in Bi2-xSbxTe3 (x = 1.56-1.68) compounds. The compounds were prepared by the spark plasma sintering of high-energy ball-milled powder. High-temperature Hall measurements revealed that the charge transport in the compounds was governed dominantly by phonon scattering and influenced additionally by alloy scattering depending on the amount of Sb. Contrary effects of Sb content on the Seebeck coefficient were discussed in terms of carrier concentration and density of state effective mass, and it was elucidated by temperature-normalized Pisarenko plot for the first time.",

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doi = "10.1063/1.4961106",

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T1 - Composition-dependent charge transport and temperature-dependent density of state effective mass interpreted by temperature-normalized Pisarenko plot in Bi2- xSbxTe3 compounds

AU - An, Tae Ho

AU - Lim, Young Soo

AU - Park, Mi Jin

AU - Tak, Jang Yeul

AU - Lee, Soonil

AU - Cho, Hyung Koun

AU - Cho, Jun Young

AU - Park, Chan

AU - Seo, Won Seon

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Composition-dependent charge transport and temperature-dependent density of state effective mass-dependent Seebeck coefficient were investigated in Bi2-xSbxTe3 (x = 1.56-1.68) compounds. The compounds were prepared by the spark plasma sintering of high-energy ball-milled powder. High-temperature Hall measurements revealed that the charge transport in the compounds was governed dominantly by phonon scattering and influenced additionally by alloy scattering depending on the amount of Sb. Contrary effects of Sb content on the Seebeck coefficient were discussed in terms of carrier concentration and density of state effective mass, and it was elucidated by temperature-normalized Pisarenko plot for the first time.

AB - Composition-dependent charge transport and temperature-dependent density of state effective mass-dependent Seebeck coefficient were investigated in Bi2-xSbxTe3 (x = 1.56-1.68) compounds. The compounds were prepared by the spark plasma sintering of high-energy ball-milled powder. High-temperature Hall measurements revealed that the charge transport in the compounds was governed dominantly by phonon scattering and influenced additionally by alloy scattering depending on the amount of Sb. Contrary effects of Sb content on the Seebeck coefficient were discussed in terms of carrier concentration and density of state effective mass, and it was elucidated by temperature-normalized Pisarenko plot for the first time.

UR - https://www.scopus.com/pages/publications/84982118843

U2 - 10.1063/1.4961106

DO - 10.1063/1.4961106

M3 - Article

AN - SCOPUS:84982118843

SN - 2166-532X

VL - 4

JO - APL Materials

JF - APL Materials

IS - 10

M1 - 104812

ER -

Composition-dependent charge transport and temperature-dependent density of state effective mass interpreted by temperature-normalized Pisarenko plot in Bi_{2- x}Sb_xTe₃ compounds

Abstract

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