Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3

The substitutional doping approach has been shown to be an effective strategy to improve ZT of Bi2Te3-based thermoelectric raw materials. We herein report the Fe-doping effects on electronic and thermal transport properties of polycrystalline bulks of p-type Bi0.48Sb1.52Te3. After a small amount of...

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Main Authors:	Hyeona Mun, Kyu Hyoung Lee, Suk Jun Kim, Jong-Young Kim, Jeong Hoon Lee, Jae-Hong Lim, Hee Jung Park, Jong Wook Roh, Sung Wng Kim
Format:	Article
Language:	English
Published:	MDPI AG 2015-03-01
Series:	Materials
Subjects:	doping Bi2Te3 thermoelectric raw material lattice thermal conductivity
Online Access:	http://www.mdpi.com/1996-1944/8/3/959

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spelling	doaj-9c246b919f3841a48161be35fdd4b2ed2020-11-24T23:23:10ZengMDPI AGMaterials1996-19442015-03-018395996510.3390/ma8030959ma8030959Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3Hyeona Mun0Kyu Hyoung Lee1Suk Jun Kim2Jong-Young Kim3Jeong Hoon Lee4Jae-Hong Lim5Hee Jung Park6Jong Wook Roh7Sung Wng Kim8Department of Energy Science, Sungkyunkwan University, Suwon 440-746, KoreaDepartment of Nano Applied Engineering, Kangwon National University, Chuncheon 200-701, KoreaSchool of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, Cheonan 330-708, KoreaIcheon Branch, Korea Institute of Ceramic Engineering and Technology, Icheon 467-843, KoreaDepartment of Electrical Engineering, Kwangwoon University, Seoul 139-701, KoreaElectrochemistry Department, Korea Institute of Materials Science, Changwon 641-010, KoreaMaterials R&D Center, Samsung Advanced Institute of Technology, Samsung Electronics, Suwon 443-370, KoreaMaterials R&D Center, Samsung Advanced Institute of Technology, Samsung Electronics, Suwon 443-370, KoreaDepartment of Energy Science, Sungkyunkwan University, Suwon 440-746, KoreaThe substitutional doping approach has been shown to be an effective strategy to improve ZT of Bi2Te3-based thermoelectric raw materials. We herein report the Fe-doping effects on electronic and thermal transport properties of polycrystalline bulks of p-type Bi0.48Sb1.52Te3. After a small amount of Fe-doping on Bi/Sb-sites, the power factor could be enhanced due to the optimization of carrier concentration. Additionally, lattice thermal conductivity was reduced by the intensified point-defect phonon scattering originating from the mass difference between the host atoms (Bi/Sb) and dopants (Fe). An enhanced ZT of 1.09 at 300 K was obtained in 1.0 at% Fe-doped Bi0.48Sb1.52Te3 by these synergetic effects.http://www.mdpi.com/1996-1944/8/3/959dopingBi2Te3thermoelectricraw materiallattice thermal conductivity
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Hyeona Mun Kyu Hyoung Lee Suk Jun Kim Jong-Young Kim Jeong Hoon Lee Jae-Hong Lim Hee Jung Park Jong Wook Roh Sung Wng Kim
spellingShingle	Hyeona Mun Kyu Hyoung Lee Suk Jun Kim Jong-Young Kim Jeong Hoon Lee Jae-Hong Lim Hee Jung Park Jong Wook Roh Sung Wng Kim Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3 Materials doping Bi2Te3 thermoelectric raw material lattice thermal conductivity
author_facet	Hyeona Mun Kyu Hyoung Lee Suk Jun Kim Jong-Young Kim Jeong Hoon Lee Jae-Hong Lim Hee Jung Park Jong Wook Roh Sung Wng Kim
author_sort	Hyeona Mun
title	Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3
title_short	Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3
title_full	Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3
title_fullStr	Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3
title_full_unstemmed	Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3
title_sort	fe-doping effect on thermoelectric properties of p-type bi0.48sb1.52te3
publisher	MDPI AG
series	Materials
issn	1996-1944
publishDate	2015-03-01
description	The substitutional doping approach has been shown to be an effective strategy to improve ZT of Bi2Te3-based thermoelectric raw materials. We herein report the Fe-doping effects on electronic and thermal transport properties of polycrystalline bulks of p-type Bi0.48Sb1.52Te3. After a small amount of Fe-doping on Bi/Sb-sites, the power factor could be enhanced due to the optimization of carrier concentration. Additionally, lattice thermal conductivity was reduced by the intensified point-defect phonon scattering originating from the mass difference between the host atoms (Bi/Sb) and dopants (Fe). An enhanced ZT of 1.09 at 300 K was obtained in 1.0 at% Fe-doped Bi0.48Sb1.52Te3 by these synergetic effects.
topic	doping Bi2Te3 thermoelectric raw material lattice thermal conductivity
url	http://www.mdpi.com/1996-1944/8/3/959
work_keys_str_mv	AT hyeonamun fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT kyuhyounglee fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT sukjunkim fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT jongyoungkim fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT jeonghoonlee fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT jaehonglim fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT heejungpark fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT jongwookroh fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3 AT sungwngkim fedopingeffectonthermoelectricpropertiesofptypebi048sb152te3
_version_	1725564915377242112

Fe-Doping Effect on Thermoelectric Properties of p-Type Bi0.48Sb1.52Te3

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