Two impurity energy level regulation leads to enhanced thermoelectric performance of Ag1-xCdxIn5Se8

doi:10.1039/c6ra28432a

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 机器人与3D打印技术创新中心

	Two impurity energy level regulation leads to enhanced thermoelectric performance of Ag1-xCdxIn5Se8
	Shen, Xingchen 1; Shaheen, Nusrat 1; Zhang, Aijuan 1; Yang, Dingfeng 1; Yao, Wei 1; Wang, Guoyu2 ; Lu, Xu 1; Zhou, Xiaoyuan 1
刊名	RSC ADVANCES
	2017
卷号	7 期号:21 页码:12719-12725
ISSN号	2046-2069
DOI	10.1039/c6ra28432a
通讯作者	Lu, X ; Zhou, XY (reprint author), Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China.
英文摘要	The tetrahedrally bonded diamond-like compound AgIn5Se8 is proved to be a promising thermoelectric material due to its intrinsically low thermal conductivity. For the pristine AgIn5Se8 compound, however, the inferior electrical properties generally result in a limited zT value, owing to its wide band gap, up to 1.1 eV. Here, we report on the synthesis of AgIn5Se8 compound through a quick and convenient solid-state reaction route. Furthermore, the two impurity energy levels are regulated in those doped samples by incorporating Cd2+ ions at Ag+ lattice sites; the electron concentration dramatically increases, resulting in greatly enhanced electrical conductivity and thus a thermoelectric power factor over the entire temperature range. Combined with the intrinsically low lattice thermal conductivity, Cd-doped Ag1-xCdxIn5Se8 with x = 0.05 reaches the highest zT value of 0.63 at 883 K, favorably improved by 40% compared with that of the pristine AgIn5Se8.
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资助项目	National Natural Science Foundation of China[11344010] ; National Natural Science Foundation of China[11404044] ; National Natural Science Foundation of China[51472036] ; National Natural Science Foundation of China[51672270] ; National Natural Science Foundation of China[51401202] ; Fundamental Research Funds for the Central Universities[106112016CDJZR308808] ; 100 Talent Program of the Chinese Academy of Sciences[2013-46] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2015JCYJBX0026]
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000395934500034
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/3431]
专题	机器人与3D打印技术创新中心
通讯作者	Lu, Xu; Zhou, Xiaoyuan
作者单位	1.Chongqing Univ, Dept Appl Phys, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Shen, Xingchen,Shaheen, Nusrat,Zhang, Aijuan,et al. Two impurity energy level regulation leads to enhanced thermoelectric performance of Ag1-xCdxIn5Se8[J]. RSC ADVANCES,2017,7(21):12719-12725.
APA	Shen, Xingchen.,Shaheen, Nusrat.,Zhang, Aijuan.,Yang, Dingfeng.,Yao, Wei.,...&Zhou, Xiaoyuan.(2017).Two impurity energy level regulation leads to enhanced thermoelectric performance of Ag1-xCdxIn5Se8.RSC ADVANCES,7(21),12719-12725.
MLA	Shen, Xingchen,et al."Two impurity energy level regulation leads to enhanced thermoelectric performance of Ag1-xCdxIn5Se8".RSC ADVANCES 7.21(2017):12719-12725.