Enhanced thermoelectric performance of Se-doped PbTe bulk materials via nanostructuring and multi-scale hierarchical architecture

doi:10.1016/j.jallcom.2017.07.193

	Enhanced thermoelectric performance of Se-doped PbTe bulk materials via nanostructuring and multi-scale hierarchical architecture
	Zhang, Kunmin 1; Zhang, Qihao 1,2; Wang, Lianjun 1; Jiang, Wan 1,3; Chen, Lidong 2
刊名	Journal of Alloys and Compounds
	2017
卷号	725 页码:563-572
ISSN号	09258388
DOI	10.1016/j.jallcom.2017.07.193
英文摘要	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.
内容类型	期刊论文
源URL	[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
推荐引用方式 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.