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

doi:10.1021/acsami.0c13651

	Achieving Enhanced Thermoelectric Performance in (SnTe)(1-x)(Sb2Te3)(x) and (SnTe)(1-y)(Sb2Se3)(y) Synthesized via Solvothermal Reaction and Sintering
	Liu, Xiaofang 3; Zhang, Bin 2; Chen, Yao 3; Wu, Hong 4; Wang, Hengyang 3; Yang, Meiling 3; Wang, Guoyu 5; Xu, Jingtao 1; Zhou, Xiaoyuan 2,4; Han, Guang 3
刊名	ACS APPLIED MATERIALS & INTERFACES
	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
DOI	10.1021/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
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000579956100040
内容类型	期刊论文
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.Ningbo Ruiling Adv Energy Mat Inst Co Ltd, Ningbo 315500, Peoples R China 2.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 3.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China 4.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China 5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, 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.