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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
发表期刊Journal of Alloys and Compounds
ISSN09258388
卷号725页码:563-572
摘要The 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入藏号20173003979679
EI主题词Hydrothermal synthesis
EI分类号402 Buildings and Towers - 546.1 Lead and Alloys - 701.1 Electricity: Basic Concepts and Phenomena - 802.2 Chemical Reactions - 933.1.1 Crystal Lattice
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25793
专题中国科学院上海硅酸盐研究所
作者单位1.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
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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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