Liquid-Phase Manipulation Securing Enhanced Thermoelectric Performance of Ag2Se

doi:10.1021/acsami.1c08410

	Liquid-Phase Manipulation Securing Enhanced Thermoelectric Performance of Ag2Se
	Li, Di; Zhang, Bao Li; Ming, Hong Wei; Wang, Ling; Zu, Yan; Qin, Xiao Ying
刊名	ACS APPLIED MATERIALS & INTERFACES
	2021-07-28
卷号	13
关键词	Ag2Se liquid-state manipulation thermoelectric performance N-type semiconductor power factor
ISSN号	1944-8244
DOI	10.1021/acsami.1c08410
通讯作者	Li, Di(lidi@issp.ac.cn) ; Zu, Yan(zuyanch@126.com)
英文摘要	Developing n-type materials with high peak and/or average ZT (ZT is the figure of merit) is an urgent need for the lower ZT of the existing n-type BiTeSe materials compared with the p-type BiSbTe materials. Here, we demonstrate that liquid-phase sintering can lead to lowered thermal conductivity and an improved power factor in n-type Ag2Se, which originates from the greatly lowered electronic thermal conductivity attributed to the decreased mobility and improved Seebeck coefficients because of increased effective mass. Benefiting from this, the maximum ZT (ZT(max)) of similar to 1.21 and the average ZT (ZT(ave)) of 1.06 are successfully achieved in polycrystalline Ag2Se. In this work, ZT(ave) is the highest reported value, being 26% larger than that of Ag2Se reported. Our work shows that liquid-phase sintering to achieve improved thermoelectric (TE) performance opens a great opportunity for designing prospective thermoelectrics.
资助项目	Natural Science Foundation of China[51672278] ; Natural Science Foundation of China[11674322]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000679917500078
资助机构	Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123039]
专题	中国科学院合肥物质科学研究院
通讯作者	Li, Di; Zu, Yan
作者单位	Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Li, Di,Zhang, Bao Li,Ming, Hong Wei,et al. Liquid-Phase Manipulation Securing Enhanced Thermoelectric Performance of Ag2Se[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13.
APA	Li, Di,Zhang, Bao Li,Ming, Hong Wei,Wang, Ling,Zu, Yan,&Qin, Xiao Ying.(2021).Liquid-Phase Manipulation Securing Enhanced Thermoelectric Performance of Ag2Se.ACS APPLIED MATERIALS & INTERFACES,13.
MLA	Li, Di,et al."Liquid-Phase Manipulation Securing Enhanced Thermoelectric Performance of Ag2Se".ACS APPLIED MATERIALS & INTERFACES 13(2021).