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Enhanced thermoelectric performance of Se-doped PbTe bulk materials via nanostructuring and multi-scale hierarchical architecture
Zhang, Kunmin1; Zhang, Qihao1,2; Wang, Lianjun1; Jiang, Wan1,3; Chen, Lidong2
2017
Source PublicationJournal of Alloys and Compounds
ISSN09258388
Volume725Pages:563-572
AbstractThe combination of feasible bottom-up hydrothermal synthesis is demonstrated to notably enhance thermoelectric performance of the PbTe matrix with different Se-doped contents. The instinct electrical properties are improved by annealing with reducing gas to achieve relatively high power factor. Furthermore, multi-scale hierarchical architecture is established together with the point defects and dislocations introduced by doping Se and the formation of nanoscale participates, couple with increased boundaries and a large grain size scale from 20 nm to 1.5 μm and, resulting in scattering an even broader frequency spectrum of phonon mean free path to reduce the lattice thermal conductivity effectively. Consequently, it plays an essential synergistic optimization to achieve a maximum ZT value of 0.98 at 625 K from the as-prepared n-type PbTe1-xSex(x = 0.06) alloys. This study provides a facile and low-cost method to fabricate multi-scale hierarchical architecture materials on a large scale with significant enhancement of thermoelectric performance. © 2017 Elsevier B.V.
DOI10.1016/j.jallcom.2017.07.193
EI Accession Number20173003979679
EI KeywordsHydrothermal synthesis
EI Classification Number402 Buildings and Towers - 546.1 Lead and Alloys - 701.1 Electricity: Basic Concepts and Phenomena - 802.2 Chemical Reactions - 933.1.1 Crystal Lattice
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25793
Collection中国科学院上海硅酸盐研究所
Affiliation1.State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai; 201620, China;
2.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
3.School of Material Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen; 333000, China
Recommended Citation
GB/T 7714
Zhang, Kunmin,Zhang, Qihao,Wang, Lianjun,et al. Enhanced thermoelectric performance of Se-doped PbTe bulk materials via nanostructuring and multi-scale hierarchical architecture[J]. Journal of Alloys and Compounds,2017,725:563-572.
APA Zhang, Kunmin,Zhang, Qihao,Wang, Lianjun,Jiang, Wan,&Chen, Lidong.(2017).Enhanced thermoelectric performance of Se-doped PbTe bulk materials via nanostructuring and multi-scale hierarchical architecture.Journal of Alloys and Compounds,725,563-572.
MLA Zhang, Kunmin,et al."Enhanced thermoelectric performance of Se-doped PbTe bulk materials via nanostructuring and multi-scale hierarchical architecture".Journal of Alloys and Compounds 725(2017):563-572.
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