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Compound Defects and Thermoelectric Properties of Self-Charge Compensated Skutterudites SeyCo4Sb12-xSex
Wan, Shun1,2; Huang, Xiangyang1; Qiu, Pengfei1; Shi, Xun1; Chen, Lidong1
2017
Source PublicationACS Applied Materials and Interfaces
ISSN19448244
Volume9Issue:27Pages:22713-22724
AbstractIn the past two decades, many studies have focused on the effects of electropositive guest fillers on the electrical and thermal transport properties in CoSb3-based skutterudites. Recently, some electronegative elements such as S, Se, Cl, and Br have been filled into the voids in CoSb3with a small amount of n-type dopant Te on the Sb sites. In this report, self-charge compensated skutterudites SeyCo4Sb12-xSex(0 3with a solubility limit around 0.6. The Se content has little effect on bandgap. Similar to Ga dual-site occupied GayCo4Sb12-xGax(y = 2x), a typical semiconducting electrical property with a low carrier concentration as well as a large Seebeck coefficient is observed. A correlation between the large Seebeck coefficient and the carrier scattering mechanism has been proposed. In addition, a largely reduced room temperature lattice thermal conductivity is obtained with a minimum value of 2.1 Wm-1K-1for Se0.2Co4Sb11.6Se0.4. The effects of Se on lattice thermal conductivity and filler resonant frequency are discussed. © 2017 American Chemical Society.
DOI10.1021/acsami.7b05887
EI Accession Number20172903957634
EI KeywordsThermal conductivity
EI Classification Number482.2 Minerals - 546.4 Antimony and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641.1 Thermodynamics - 701.1 Electricity: Basic Concepts and Phenomena - 933.1.1 Crystal Lattice - 951 Materials Science
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25878
Collection中国科学院上海硅酸盐研究所
Affiliation1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China
Recommended Citation
GB/T 7714
Wan, Shun,Huang, Xiangyang,Qiu, Pengfei,et al. Compound Defects and Thermoelectric Properties of Self-Charge Compensated Skutterudites SeyCo4Sb12-xSex[J]. ACS Applied Materials and Interfaces,2017,9(27):22713-22724.
APA Wan, Shun,Huang, Xiangyang,Qiu, Pengfei,Shi, Xun,&Chen, Lidong.(2017).Compound Defects and Thermoelectric Properties of Self-Charge Compensated Skutterudites SeyCo4Sb12-xSex.ACS Applied Materials and Interfaces,9(27),22713-22724.
MLA Wan, Shun,et al."Compound Defects and Thermoelectric Properties of Self-Charge Compensated Skutterudites SeyCo4Sb12-xSex".ACS Applied Materials and Interfaces 9.27(2017):22713-22724.
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