Realizing high thermoelectric performance in eco-friendly SnTe via synergistic resonance levels, band convergence and endotaxial nanostructuring with Cu2Te

doi:10.1016/j.nanoen.2020.104832

	Realizing high thermoelectric performance in eco-friendly SnTe via synergistic resonance levels, band convergence and endotaxial nanostructuring with Cu2Te
	Hussain, Tanveer 3; Li, Xiaotong 3; Danish, Mazhar Hussain 2; Rehman, Mutee Ur 1; Zhang, Jian 2; Li, Di 2; Chen, Guang 3; Tang, Guodong 3
刊名	NANO ENERGY
	2020-07-01
卷号	73
关键词	SnTe Band convergence Resonance levels Endotaxial nanostructuring Thermoelectric materials Thermoelectric performance
ISSN号	2211-2855
DOI	10.1016/j.nanoen.2020.104832
通讯作者	Chen, Guang(gchen@njust.edu.cn) ; Tang, Guodong(tangguodong@njust.edu.cn)
英文摘要	SnTe is emerging as environment-friendly alternative to conventional thermoelectric material PbTe which contains toxic element. Here, we achieved an ultrahigh power factor and high thermoelectric performance of SnTe via the synergy of resonance levels, band convergence and endotaxial nanostructuring. We found that the coexistence of resonant levels (by In dopant) and band convergence (by Ca dopant) produce remarkable enhancement of Seebeck coefficient and ultrahigh power factor. The largest power factor reaches as high as similar to 42.2 mu Wcm(-1)K(-2). Endotaxial Cu2Te nanostructures were further introduced by a phase separation strategy, which plays a dominant role in reducing the lattice thermal conductivity. Meanwhile, it is revealed that Ca and In codoping enlarges band gap, therefore suppressing bipolar thermal conductivity. These electronic and thermal effects contribute to a record high ZT of similar to 1.85 at 823 K and a high average ZT of 0.67. This high performance material is low-cost, earth-abundant and environmentally-friendly, which are essential for the widespread use of thermoelectric modules.
资助项目	National Natural Science Foundation of China[U1732153] ; Natural Science Foundation of Jiangsu Province[BK20161495] ; Fundamental Research Funds for the Central Universities[30917011206] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[KYCX19_0290]
WOS关键词	THERMAL-CONDUCTIVITY ; POWER-FACTOR ; ENHANCEMENT ; PBTE ; EFFICIENCY ; TRANSPORT ; FIGURE ; MERIT
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000560077800005
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Fundamental Research Funds for the Central Universities ; Postgraduate Research & Practice Innovation Program of Jiangsu Province
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/70776]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Guang; Tang, Guodong
作者单位	1.Zhejiang Univ, Sch Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, MIIT Key Lab Adv Metall & Intermetall Mat Technol, Nanjing 210094, Peoples R China
推荐引用方式 GB/T 7714	Hussain, Tanveer,Li, Xiaotong,Danish, Mazhar Hussain,et al. Realizing high thermoelectric performance in eco-friendly SnTe via synergistic resonance levels, band convergence and endotaxial nanostructuring with Cu2Te[J]. NANO ENERGY,2020,73.
APA	Hussain, Tanveer.,Li, Xiaotong.,Danish, Mazhar Hussain.,Rehman, Mutee Ur.,Zhang, Jian.,...&Tang, Guodong.(2020).Realizing high thermoelectric performance in eco-friendly SnTe via synergistic resonance levels, band convergence and endotaxial nanostructuring with Cu2Te.NANO ENERGY,73.
MLA	Hussain, Tanveer,et al."Realizing high thermoelectric performance in eco-friendly SnTe via synergistic resonance levels, band convergence and endotaxial nanostructuring with Cu2Te".NANO ENERGY 73(2020).