Synergistic effect of CuInSe2 alloying on enhancing the thermoelectric performance of Cu2SnSe3 compounds

doi:10.1039/d0ta07211g

	Synergistic effect of CuInSe2 alloying on enhancing the thermoelectric performance of Cu2SnSe3 compounds
	Fan, Yijing 2,3; Wang, Guoyu 5; Zhang, Bin 1; Li, Zhe 2,3; Wang, Guiwen 1; Zhang, Xiao 1; Huang, Yuling 2; Chen, Kansong 4; Gu, Hao-shuang 3; Lu, Xu 2
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2020-10-28
卷号	8 期号:40 页码:21181-21188
ISSN号	2050-7488
DOI	10.1039/d0ta07211g
通讯作者	Gu, Hao-shuang(guhsh@hubu.edu.cn) ; Lu, Xu(luxu@cqu.edu.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要	Cu2SnSe3 based compounds with a diamond-like structure are promising thermoelectric materials. However, the relatively high lattice thermal conductivity limits further improvement in their thermoelectric performance. In this work, two compounds including In2Se3 and CuInSe2 are employed to alloy with Cu2SnSe3 aiming to decrease lattice thermal conductivity and their corresponding effects are compared. It is found that alloying with CuInSe2 is more beneficial to reduce lattice thermal conductivity and maintain the power factor, as evidenced by a higher quality factor B. Subsequently, both In and Ga doping is performed to regulate the carrier concentration of (Cu2SnSe3)(0.80)(CuInSe2)(0.2). Finally, (Cu2Sn0.97Ga0.03Se3)(0.80)(CuInSe2)(0.20) displays a decent zT of similar to 0.98 at 823 K, a nearly six-fold higher value compared to that of the pristine sample. Additionally, a zT(ave) of similar to 0.35 over 300-823 K is obtained in (Cu2Sn0.97Ga0.03Se3)(0.80)(CuInSe2)(0.20), which is among the best reported p-type Cu2SnSe3 based compounds. The result proves that alloying with CuInSe2 combined with carrier concentration optimization is a valid strategy to improve the thermoelectric performance of Cu2SnSe3 based compounds.
资助项目	National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[51972102] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Fundamental Research Funds for the Central Universities[2019CDXYFXCS0006] ; Chongqing Entrepreneurship and Innovation Program for the Returned Overseas Chinese Scholars[cx2019002] ; Graduate Scientific Research and Innovation Foundation of Chongqing[CYB 19064]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000581598800032
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11910]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Gu, Hao-shuang; Lu, Xu; Zhou, Xiaoyuan
作者单位	1.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 2.Chongqing Univ, Coll Phys, Chongqing 400044, Peoples R China 3.Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Peoples R China 4.Hubei Univ, Sch Comp Sci & Informat Engn, Wuhan 430062, 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	Fan, Yijing,Wang, Guoyu,Zhang, Bin,et al. Synergistic effect of CuInSe2 alloying on enhancing the thermoelectric performance of Cu2SnSe3 compounds[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(40):21181-21188.
APA	Fan, Yijing.,Wang, Guoyu.,Zhang, Bin.,Li, Zhe.,Wang, Guiwen.,...&Zhou, Xiaoyuan.(2020).Synergistic effect of CuInSe2 alloying on enhancing the thermoelectric performance of Cu2SnSe3 compounds.JOURNAL OF MATERIALS CHEMISTRY A,8(40),21181-21188.
MLA	Fan, Yijing,et al."Synergistic effect of CuInSe2 alloying on enhancing the thermoelectric performance of Cu2SnSe3 compounds".JOURNAL OF MATERIALS CHEMISTRY A 8.40(2020):21181-21188.