Realizing high thermoelectric performance in magnetic field-assisted solution synthesized nanoporous SnSe integrated with quantum dots

doi:10.1016/j.cej.2022.138637

	Realizing high thermoelectric performance in magnetic field-assisted solution synthesized nanoporous SnSe integrated with quantum dots
	Li, Shuang 1; Hou, Yunxiang 1; Zhang, Shihua 1; Gong, Yaru 1; Siddique, Suniya 1; Li, Di 4; Fang, Jun 3; Nan, Pengfei 2; Ge, Binghui 2; Tang, Guodong 1
刊名	CHEMICAL ENGINEERING JOURNAL
	2023
卷号	451
关键词	Thermoelectric SnSe Magnetic field Quantum dot Nanopore
ISSN号	1385-8947
DOI	10.1016/j.cej.2022.138637
通讯作者	Li, Di(lidi@issp.ac.cn) ; Nan, Pengfei(npf@iphy.ac.cn) ; Tang, Guodong(tangguodong@njust.edu.cn)
英文摘要	SnSe is considered as one of the most promising candidates for thermoelectric application because of its attractive performance recently. In this work, a high magnetic field (5 T) is applied during the solution synthesis process. With the assist of the high magnetic field, nanopores and quantum dots (Sn, Se) are induced in the Ga doped p-type polycrystalline SnSe. It is found that an ultralow lattice thermal conductivity of 0.19 W m(-1) K-1 is caused by enhanced phonon scattering due to the presence of nanopores, quantum dots, lattice strain in dislocation networks. The enhanced density of states induced by Sn and Se quantum dots contributes to enhanced Seebeck coefficient. The enhanced electrical conductivity and Seebeck coefficient give rise to a significant enhancement in power factor over the whole temperature range. The maximum power factor reaches to 6.12 mu W cm(-1) K-2 at 873 K for the sample prepared under high magnetic field. Consequently, a peak ZT of 2.0 as well as a high average ZT of 0.74 (300-873 K) is achieved in 5 T-NP/QD Sn0.975Ga0.025Se sample. This study provides an important direction for developing high performance thermoelectric materials by structural manipulation with the aid of high magnetic field in solution chemistry.
资助项目	National Natural Science Foundation of China[52071182] ; Qinglan Project ; Young and Middle- aged Academic Leader of Jiangsu Province ; Fundamental Research Funds for the Central Universities ; High Magnetic Field Laboratory, CAS ; Young and Middle- aged Academic Leader of Jiangsu Province, the Fundamental Research Funds for the Central Universities[30921011107]
WOS关键词	ULTRAHIGH POWER-FACTOR ; POLYCRYSTALLINE SNSE ; FIGURE ; MERIT ; SOLIDIFICATION ; TRANSITION ; NANOSHEETS
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000861047500004
资助机构	National Natural Science Foundation of China ; Qinglan Project ; Young and Middle- aged Academic Leader of Jiangsu Province ; Fundamental Research Funds for the Central Universities ; High Magnetic Field Laboratory, CAS ; Young and Middle- aged Academic Leader of Jiangsu Province, the Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129269]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Di; Nan, Pengfei; Tang, Guodong
作者单位	1.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, MIIT Key Lab Adv Met & Intermet Mat Technol, Nanjing 210094, Peoples R China 2.Anhui Univ, Inst Phys Sci & Informat Technol, Mat & Intelligent Sensing Lab Anhui Prov, Key Lab Struct Funct Regulat Hybrid Mat,Minist Edu, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme C, High Magnet Field Lab, Hefei 230031, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuang,Hou, Yunxiang,Zhang, Shihua,et al. Realizing high thermoelectric performance in magnetic field-assisted solution synthesized nanoporous SnSe integrated with quantum dots[J]. CHEMICAL ENGINEERING JOURNAL,2023,451.
APA	Li, Shuang.,Hou, Yunxiang.,Zhang, Shihua.,Gong, Yaru.,Siddique, Suniya.,...&Tang, Guodong.(2023).Realizing high thermoelectric performance in magnetic field-assisted solution synthesized nanoporous SnSe integrated with quantum dots.CHEMICAL ENGINEERING JOURNAL,451.
MLA	Li, Shuang,et al."Realizing high thermoelectric performance in magnetic field-assisted solution synthesized nanoporous SnSe integrated with quantum dots".CHEMICAL ENGINEERING JOURNAL 451(2023).