Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2

Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2

We report on a greatly enhanced power factor for 1%PbS-nanoparticle-embedded TiS2 bulk ceramic, about 1 mW/(mK2) at 300 K and 1.23 mW/(mK2) in a wide temperature range of 573 ∼ 673 K, of which the latter is among the highest so far for TiS2-based thermoelectric materials. Compared to TiS2, the power...

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Main Authors: Yulong Wang, Junfu Wen, Zhenghua Fan, Ningzhong Bao, Rong Huang, Rong Tu, Yifeng Wang
Format: Article
Language:English
Published: AIP Publishing LLC 2015-04-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4918687
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spelling doaj-c0d15be8029744b7b1f100c7244b146f2020-11-24T22:19:46ZengAIP Publishing LLCAIP Advances2158-32262015-04-0154047126047126-610.1063/1.4918687027504ADVEnergy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2Yulong Wang0Junfu Wen1Zhenghua Fan2Ningzhong Bao3Rong Huang4Rong Tu5Yifeng Wang6College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaSchool of Information Science and Technology, East China Normal University, Shanghai 200062, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, ChinaCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, ChinaWe report on a greatly enhanced power factor for 1%PbS-nanoparticle-embedded TiS2 bulk ceramic, about 1 mW/(mK2) at 300 K and 1.23 mW/(mK2) in a wide temperature range of 573 ∼ 673 K, of which the latter is among the highest so far for TiS2-based thermoelectric materials. Compared to TiS2, the power factor is increased by ∼110% at 300 K and (50 ∼ 35)% at 573 ∼ 673 K. This enhancement is derived from a large increase in Seebeck coefficient which overwhelmed the modest degradation of electrical conductivity, which should be attributed to energy filtering induced by the band gap offset between TiS2 and PbS.http://dx.doi.org/10.1063/1.4918687
collection DOAJ
language English
format Article
sources DOAJ
author Yulong Wang
Junfu Wen
Zhenghua Fan
Ningzhong Bao
Rong Huang
Rong Tu
Yifeng Wang
spellingShingle Yulong Wang
Junfu Wen
Zhenghua Fan
Ningzhong Bao
Rong Huang
Rong Tu
Yifeng Wang
Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2
AIP Advances
author_facet Yulong Wang
Junfu Wen
Zhenghua Fan
Ningzhong Bao
Rong Huang
Rong Tu
Yifeng Wang
author_sort Yulong Wang
title Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2
title_short Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2
title_full Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2
title_fullStr Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2
title_full_unstemmed Energy-filtering-induced high power factor in PbS-nanoparticles-embedded TiS2
title_sort energy-filtering-induced high power factor in pbs-nanoparticles-embedded tis2
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2015-04-01
description We report on a greatly enhanced power factor for 1%PbS-nanoparticle-embedded TiS2 bulk ceramic, about 1 mW/(mK2) at 300 K and 1.23 mW/(mK2) in a wide temperature range of 573 ∼ 673 K, of which the latter is among the highest so far for TiS2-based thermoelectric materials. Compared to TiS2, the power factor is increased by ∼110% at 300 K and (50 ∼ 35)% at 573 ∼ 673 K. This enhancement is derived from a large increase in Seebeck coefficient which overwhelmed the modest degradation of electrical conductivity, which should be attributed to energy filtering induced by the band gap offset between TiS2 and PbS.
url http://dx.doi.org/10.1063/1.4918687
work_keys_str_mv AT yulongwang energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
AT junfuwen energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
AT zhenghuafan energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
AT ningzhongbao energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
AT ronghuang energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
AT rongtu energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
AT yifengwang energyfilteringinducedhighpowerfactorinpbsnanoparticlesembeddedtis2
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