Realization of adjustable electron concentration and its effect on electrical- and Seebeck-property of n-type SnSe crystals

doi:10.1063/5.0078990

	Realization of adjustable electron concentration and its effect on electrical- and Seebeck-property of n-type SnSe crystals
	Zhou, Xiao-Li 1,6; Lv, Yang-Yang 2,3; Zhang, Hang-Fei 1,6; Zhang, Yong 5; Zhang, Jinglei 5; Zhou, Jian 1,2,6; Yao, Shu-Hua 1,2,6; Chen, Y. B.2,3; Chen, Yan-Feng 1,2,4,6
刊名	APPLIED PHYSICS LETTERS
	2022-01-10
卷号	120
ISSN号	0003-6951
DOI	10.1063/5.0078990
通讯作者	Yao, Shu-Hua(shyao@nju.edu.cn) ; Chen, Y. B.(ybchen@nju.edu.cn)
英文摘要	Manipulation of carrier types in SnSe crystals is quite advantageous to fabricate SnSe-based homojunction devices such as thermoelectric modules. However, tuning the n-type charge carrier at an optimal level of SnSe is quite challenging because of its natural p-type without intentional doping. Here, we report the realization of the n-type SnSe through halogens or Ce doping. Importantly, heavily electron doped SnSe single crystals (similar to 10(19) cm(-3)) can be obtained by Ce-doping through the Bridgeman method. The electrical conductivity of as-grown SnSe crystals evolves from thermally activated behavior to the metallic one when the electron concentrations are increased from 10(16) to 10(19) cm(-3). Remarkably, the power-factor and electronic quality factor of heavily electron Ce-doped SnSe crystals can reach 1.59 and 0.44 mu W cm(-1)K(-2) at 300 K, respectively, which is one of the best thermoelectric n-type SnSe. This work suggests that Ce-doping through the Bridgeman method is an ideal route for further improving the thermoelectric property of n-type SnSe crystals. Published under an exclusive license by AIP Publishing.
WOS研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000791375600008
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130817]
专题	中国科学院合肥物质科学研究院
通讯作者	Yao, Shu-Hua; Chen, Y. B.
作者单位	1.Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 4.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China 5.Chinese Acad Sci, High Field Magnet Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Anhui, Peoples R China 6.Nanjing Univ, Jiangsu Key Lab Artificial Funct Mat, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xiao-Li,Lv, Yang-Yang,Zhang, Hang-Fei,et al. Realization of adjustable electron concentration and its effect on electrical- and Seebeck-property of n-type SnSe crystals[J]. APPLIED PHYSICS LETTERS,2022,120.
APA	Zhou, Xiao-Li.,Lv, Yang-Yang.,Zhang, Hang-Fei.,Zhang, Yong.,Zhang, Jinglei.,...&Chen, Yan-Feng.(2022).Realization of adjustable electron concentration and its effect on electrical- and Seebeck-property of n-type SnSe crystals.APPLIED PHYSICS LETTERS,120.
MLA	Zhou, Xiao-Li,et al."Realization of adjustable electron concentration and its effect on electrical- and Seebeck-property of n-type SnSe crystals".APPLIED PHYSICS LETTERS 120(2022).