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Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te

文献类型：期刊论文

作者Zhu, Chen1,2; Zhang, Jian1; Ming, Hongwei1,2; Huang, Lulu1,2; Li, Yuanyue3; Chen, Tao1,2; Li, Di1; Zhang, Baoli1,4; Xu, Jingtao5; Qin, Xiaoying1
刊名JOURNAL OF MATERIOMICS
出版日期2021
卷号7
关键词Thermoelectric n-type PbTe Electrical transport Thermal transport Nanophase
ISSN号2352-8478
DOI10.1016/j.jmat.2020.08.001
通讯作者Zhang, Jian(zhangjian@issp.ac.cn) ; Li, Di(lidi@issp.ac.cn) ; Qin, Xiaoying(xyqin@issp.ac.cn)
英文摘要Based on the calculated results of band structures and density of states, Bi doping is used to adjust its carrier concentration in order to obtain n-type PbTe materials with high power factor. Then, coherent nanophase Cu1.75Te is in situ formed in the n-type PbTe matrix, which can simultaneously optimize the thermal and electrical properties. As a result, at a relative lower temperature than other reports, the highest ZT value of 1.4 is obtained at 623 K for the nominal Pb0.995Bi0.005Te+0.86 wt% Cu1.75Te sample. More importantly, the ZT hold a higher value in the broad temperature; especially, ZT value is about 1.2 -1.4 in the temperature range of 573-773 K, which is beneficial to the significant average ZT value ZT(ave) similar to 0.9 in the temperature range of 300-773 K. These results indicate that it is an effective and feasible method to enhance the thermoelectric properties via synergistic modulation of electrical and thermal transport properties by element doping and in situ coherent nanophase. (C) 2020 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.
WOS关键词HIGH THERMOELECTRIC PERFORMANCE ; BAND-STRUCTURE ; CONDUCTIVITY ; POTENTIALS ; SCATTERING ; FIGURE ; MERIT ; SNSE ; NANO
资助项目National Natural Science Foundation of China[51972307] ; National Natural Science Foundation of China[51672278] ; National Natural Science Foundation of China[11674322]
WOS研究方向Chemistry ; Materials Science ; Physics
语种英语
WOS记录号WOS:000603345900001
出版者ELSEVIER
资助机构National Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/120050]  
专题中国科学院合肥物质科学研究院
通讯作者Zhang, Jian; Li, Di; Qin, Xiaoying
作者单位1.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Qingdao Univ, Coll Microtechnol & Nanotechnol, Qingdao 266071, Peoples R China
4.Anhui Univ, Hefei 230601, Peoples R China
5.Ningbo Ruiling Adv Energy Mat Inst Co Ltd, Ningbo 315500, Peoples R China
推荐引用方式
GB/T 7714		 Zhu, Chen,Zhang, Jian,Ming, Hongwei,et al. Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te[J]. JOURNAL OF MATERIOMICS,2021,7.
APA Zhu, Chen.,Zhang, Jian.,Ming, Hongwei.,Huang, Lulu.,Li, Yuanyue.,...&Qin, Xiaoying.(2021).Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te.JOURNAL OF MATERIOMICS,7.
MLA Zhu, Chen,et al."Synergistic optimization of electrical and thermal transport in n-type Bi-doped PbTe by introducing coherent nanophase Cu1.75Te".JOURNAL OF MATERIOMICS 7(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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