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Achieving Enhanced Thermoelectric Performance in (SnTe)(1-x)(Sb2Te3)(x) and (SnTe)(1-y)(Sb2Se3)(y) Synthesized via Solvothermal Reaction and Sintering

文献类型：期刊论文

作者Liu, Xiaofang5; Zhang, Bin4; Chen, Yao5; Wu, Hong1; Wang, Hengyang5; Yang, Meiling5; Wang, Guoyu3; Xu, Jingtao2; Zhou, Xiaoyuan1,4; Han, Guang5
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2020-10-07
卷号12期号:40页码:44805-44814
关键词thermoelectric SnTe solvothermal synthesis vacancy engineering thermal conductivity
ISSN号1944-8244
DOI10.1021/acsami.0c13651
通讯作者Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn) ; Han, Guang(guang.han@cqu.edu.cn)
英文摘要SnTe is proposed to be an intriguing low-toxicity alternative to PbTe. Herein, we report the diminished lattice thermal conductivity (kappa(L)) and enhanced zT of SnTe by way of vacancy engineering. (SnTe)(1-x)(Sb2Te3)(x) (x = 0.03, 0.06, and 0.10) and (SnTe)(1-y)(Sb2Se3)(y) (y = 0.03 and 0.06) were synthesized by blending and sintering their solution-synthesized nano/microstructures (i.e., SnTe octahedral particles, Sb2Te3 nanoplates, and Sb2Se3 nanorods). Benefiting from the chemical reactions during sintering, single-phase SnTe-based solid solutions were formed when x or y is not higher than 0.06, into which tunable concentrations of Sn vacancies were introduced. Such vacancies significantly enhance phonon scattering, leading to the sharply reduced room temperature kappa(L) of 1.40 and 1.26 W m(-1) K-1 for x = 0.06 and y = 0.06 samples, respectively, as compared to 3.73 W m(-1) K-1 for pristine SnTe. Enabled by point defects with the highest concentration and SnSb2Te4 secondary phase, (SnTe)(0.90)(Sb2Te3)(0.10) sample obtains the lowest kappa(L) of 0.70 W m(-1) K-1 at 813 K. Ultimately, maximum zT values of 0.6 and 0.7 at 813 K are achieved in (SnTe)(0.90)(Sb2Te3)(0.10) and (SnTe)(0.9)4(Sb2Se3)(0.06), respectively. This study demonstrates the effectiveness of vacancy engineering in improving zT of SnTe-based materials.
资助项目National Natural Science Foundation of China[51802034] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51672270] ; Chongqing Research Program of Basic Research and Frontier Technology[cstc2018jcyjAX0346] ; Chongqing Entrepreneurship and Innovation Program for the Returned Overseas Chinese Scholars[cx2018020] ; Fundamental Research Funds for the Central Universities[2019CDQYCL003]
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000579956100040
出版者AMER CHEMICAL SOC
源URL[http://119.78.100.138/handle/2HOD01W0/11895]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Zhou, Xiaoyuan; Han, Guang
作者单位1.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
2.Ningbo Ruiling Adv Energy Mat Inst Co Ltd, Ningbo 315500, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
4.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
5.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xiaofang,Zhang, Bin,Chen, Yao,et al. Achieving Enhanced Thermoelectric Performance in (SnTe)(1-x)(Sb2Te3)(x) and (SnTe)(1-y)(Sb2Se3)(y) Synthesized via Solvothermal Reaction and Sintering[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(40):44805-44814.
APA Liu, Xiaofang.,Zhang, Bin.,Chen, Yao.,Wu, Hong.,Wang, Hengyang.,...&Han, Guang.(2020).Achieving Enhanced Thermoelectric Performance in (SnTe)(1-x)(Sb2Te3)(x) and (SnTe)(1-y)(Sb2Se3)(y) Synthesized via Solvothermal Reaction and Sintering.ACS APPLIED MATERIALS & INTERFACES,12(40),44805-44814.
MLA Liu, Xiaofang,et al."Achieving Enhanced Thermoelectric Performance in (SnTe)(1-x)(Sb2Te3)(x) and (SnTe)(1-y)(Sb2Se3)(y) Synthesized via Solvothermal Reaction and Sintering".ACS APPLIED MATERIALS & INTERFACES 12.40(2020):44805-44814.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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