Anisotropic thermoelectric properties of layered compound SnSe2

IF 20.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Bulletin Pub Date : 2017-12-30 Epub Date: 2017-11-21 DOI:10.1016/j.scib.2017.11.015

Peipei Xu, Tiezheng Fu, Jiazhan Xin, Yintu Liu, Pingjun Ying, Xinbing Zhao, Hongge Pan, Tiejun Zhu

{"title":"Anisotropic thermoelectric properties of layered compound SnSe2","authors":"Peipei Xu, Tiezheng Fu, Jiazhan Xin, Yintu Liu, Pingjun Ying, Xinbing Zhao, Hongge Pan, Tiejun Zhu","doi":"10.1016/j.scib.2017.11.015","DOIUrl":null,"url":null,"abstract":"<div>Similar to high performance SnSe thermoelectrics, SnSe2 is also a layered structured semiconductor. However, its anisotropic thermoelectric properties are less experimentally investigated. In this work, Cl-doped SnSe2 bulk materials are successfully prepared, and their thermal stability and anisotropic transport properties are systematically studied. Unexpectedly, different from the theoretical prediction and other typical layered thermoelectric compounds like Bi2Te3, the out-of-plane zTc value is higher than in-plane zTa for the same composition. The zT value is significantly enhanced by Cl doping. A maximum zTc of ∼0.4 at 673 K is achieved in SnSe1.88Cl0.12, twice higher than previously reported Cl-doped SnSe2 synthesized by the solvothermal method.</div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"62 24","pages":"Pages 1663-1668"},"PeriodicalIF":20.7000,"publicationDate":"2017-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.scib.2017.11.015","citationCount":"49","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science Bulletin","FirstCategoryId":"103","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095927317305832","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2017/11/21 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}

引用次数: 49

Abstract

Similar to high performance SnSe thermoelectrics, SnSe₂ is also a layered structured semiconductor. However, its anisotropic thermoelectric properties are less experimentally investigated. In this work, Cl-doped SnSe₂ bulk materials are successfully prepared, and their thermal stability and anisotropic transport properties are systematically studied. Unexpectedly, different from the theoretical prediction and other typical layered thermoelectric compounds like Bi₂Te₃, the out-of-plane zT_c value is higher than in-plane zT_a for the same composition. The zT value is significantly enhanced by Cl doping. A maximum zT_c of ∼0.4 at 673 K is achieved in SnSe_1.88Cl_0.12, twice higher than previously reported Cl-doped SnSe₂ synthesized by the solvothermal method.

查看原文本刊更多论文

层状化合物SnSe2的各向异性热电性能

与高性能SnSe热电器件类似，SnSe2也是一种分层结构半导体。然而，对其各向异性热电性能的实验研究较少。本文成功制备了掺杂cl的SnSe2块状材料，并对其热稳定性和各向异性输运性能进行了系统研究。出乎意料的是，与理论预测和其他典型层状热电化合物如Bi2Te3不同，相同成分的面外zTc值高于面内zTa值。掺杂Cl后zT值显著提高。在673 K下，SnSe1.88Cl0.12的zTc最大值为~ 0.4，比之前报道的用溶剂热法合成的掺杂cl的SnSe2高两倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science Bulletin MULTIDISCIPLINARY SCIENCES-

CiteScore

24.60

自引率

2.10%

发文量

8092

期刊介绍： Science Bulletin (Sci. Bull., formerly known as Chinese Science Bulletin) is a multidisciplinary academic journal supervised by the Chinese Academy of Sciences (CAS) and co-sponsored by the CAS and the National Natural Science Foundation of China (NSFC). Sci. Bull. is a semi-monthly international journal publishing high-caliber peer-reviewed research on a broad range of natural sciences and high-tech fields on the basis of its originality, scientific significance and whether it is of general interest. In addition, we are committed to serving the scientific community with immediate, authoritative news and valuable insights into upcoming trends around the globe.