HFCAS OpenIR
Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy
Jiang, Zhongsheng1,2; Ming, Hongwei1,2; Qin, Xiaoying1; Feng, Dan3,4; Zhang, Jian1; Song, Chunjun1; Li, Di1; Xin, Hongxing1; Li, Juncai1,2; He, Jiaqing3
2020-10-14
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Corresponding AuthorQin, Xiaoying(xyqin@issp.ac.cn)
AbstractTo achieve high thermoelectric conversion efficiency in Bi0.4Sb1.6Te3 (BST) alloy is vital for its applications in low-grade energy harvesting. Here, we show that 56% increase in the power factor (PF) (from 16 to 25 mu W cm(-1) K-2) and 32% reduction of lattice thermal conductivity kappa(L )(from 0.56 to 0.38 W m(-1) K-1) as well as an approximately four-fold decrease in bipolar-effect contribution kappa(b) (from 0.48 to 0.12 W m(-1) K-1) can be achieved at 512 K through the incorporation of 0.2 vol % PbSe nanoparticles in the BST matrix. Analyses indicate that the remarkable increase in PF for the composite samples can be mainly attributed to strong electron scattering at the large interface barriers, inhibiting effectively the electron contribution to the total thermopower at elevated temperatures, while the large drop of kappa(L) and kappa(b) originates from enhanced phonon scattering by PbSe nanoinclusions as well as phase boundaries (among BST and PbSe nanophase) and suppression of electron transport, respectively. As a result, a maximum figure of merit (ZT) of 1.56 (at 400 K) and an average ZT (ZT(ave)) of 1.44 in the temperature range of 300-512 K are reached. Correspondingly, a record projected conversion efficiency eta = 11% is achieved at the cold side 300 K and hot side 512 K in the BST-based composite incorporated with 0.2 vol % PbSe nanoinclusions.
Keywordthermoelectric materials BST carrier-scattering engineering conversion efficiency Debye-Callaway model
DOI10.1021/acsami.0c13542
WOS KeywordBISMUTH-ANTIMONY TELLURIDE ; FIGURE ; ENHANCEMENT ; COMPOSITES ; MERIT ; POWER ; PBTE
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[11674322] ; Natural Science Foundation of China[51672278] ; Natural Science Foundation of China[51972307] ; Leading Talents of Guangdong Province Program[00201517]
Funding OrganizationNatural Science Foundation of China ; Leading Talents of Guangdong Province Program
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS IDWOS:000582345700046
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/104843
Collection中国科学院合肥物质科学研究院
Corresponding AuthorQin, Xiaoying
Affiliation1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.South Univ Sci & Technol China, Shenzhen 518055, Peoples R China
4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Zhongsheng,Ming, Hongwei,Qin, Xiaoying,et al. Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12.
APA Jiang, Zhongsheng.,Ming, Hongwei.,Qin, Xiaoying.,Feng, Dan.,Zhang, Jian.,...&He, Jiaqing.(2020).Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy.ACS APPLIED MATERIALS & INTERFACES,12.
MLA Jiang, Zhongsheng,et al."Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy".ACS APPLIED MATERIALS & INTERFACES 12(2020).
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