摘要
Developing high-efficiency materials with earth-abundant and low-toxicity elements has become a popular trend in the field of thermoelectrics.Among these compounds,oxides and sulfides,the lighter,cheaper and green analogies of tellurides,have been extensively investigated and summarized as well defined classes.Nonetheless,the vast family of selenides with better electrical performance,lower thermal conductivity and higher thermoelectric efficiency have not been specially discussed.Here in this review,we present recent advances in binary and multinary selenide thermoelectric materials,covering traditional PbSe,liquid-like Cu_(2)Se,layered SnSe,diamond-like and disordered multinary compounds.The features of selenides are discussed based on both environmental concerns and from the perspective of chemical bonding,transport properties and performance.Emphasis is put on the“compositionstructure-processing-performance”relationship,and some interesting issues are addressed.Finally,challenges for thermoelectric selenides are discussed,and possible optimization strategies are also suggested.
基金
the Basic Science Center Project of NSFC(Grant No.51788104)
the National Natural Science Foundation(No.11474176)as well as the Shenzhen Science and Technology Plan Project(No.JCYJ20150827165038323).
作者简介
Tian-Ran Wei is currently an assistant professor at Shanghai Institute of Ceramics,Chinese Academy of Sci-ences(SICCAS).He received his B.S.degree in Materials Physics from Shandong University in 2012.Afterward,he joined Prof.Jing-Feng Li's group at Tsinghua University and obtained the Ph.D.degree in Materials Science and Engineering in 2017.Then he became an assistant profes-sor at SICCAS.His research focuses on advanced thermo-electric materials and the underlying transport mechanisms;Chao-Feng Wu is a Ph.D.student in Materials Science and Engineering at School of Materials Science and Engineer-ing,Tsinghua University.His current research focuses on thermoelectric lead chalcogenides and thermoelectric nanocomposites;Fu Li is an assistant professor of College of Physics and Energy at Shenzhen University.She received her B.E.de-gree in Materials Science and Engineering from China University in Geosciences in 2008.And then,she joined Prof.Jing-Feng Li's group at Tsinghua University and ob-tained the Ph.D.degree in Materials Science and Engineering in 2013.After working in Graduate School at Shenzhen of Tsinghua University as a postdoctor from 2013 to 2016,she joined Shenzhen University in 2016.Her research fo-cuses on advanced thermoelectric materials and microdevices;Corresponding author:Jing-Feng Li.E-mail address:jingfeng@mail.tsinghua.edu.cn,received Ph.D.from Tohoku University in 1991,and worked there as assistant professor and asso-ciate professor until joining Tsinghua University as full professor in 2002.He is currently Cheung Kong Scholar Distinguished Professor at Tsinghua University.His research interests include piezoelectric and thermoelec-tric materials and MEMS technologies.He published two books and 400 papers,hold 33 patents,and received young researcher award from the Japan Institute of Metals and outstanding young scientist grant from NSFC.He is Editor-in-Chief for Journal of Materiomics,associate editor of Journal of Chinese Ceramic Society,and also a member of editorial board for several international journals.
