Thermoelectric Properties of Off-Stoichiometric Bi2Te2Se Compounds

被引：5
作者：
Kim, Bong-Seo [1 ]
Lee, Goeun [2 ]
Lim, Hye-Jin [1 ]
Jang, Jeongin [1 ]
Lee, Ji Eun [1 ]
Min, Bok-Ki [1 ]
Joo, Sung-Jae [1 ]
Park, Sungjin [1 ]
Ryu, Byung-Ki [1 ]
Lee, Ho Seong [3 ]
机构：
[1] Korea Electrotechnol Res Inst, Energy Convers Res Ctr, Chang Won 51543, South Korea
[2] Korea Natl Univ Transportat, Cent Lab, Chungju 27469, South Korea
[3] Kyungpook Natl Univ, Sch Mat Sci & Engn, Daegu 41566, South Korea
来源：
JOURNAL OF ELECTRONIC MATERIALS | 2020年 / 49卷 / 09期
关键词：
Bi2Te2Se; thermoelectric properties; off-stoichiometry; scattering mode; TOPOLOGICAL INSULATOR; ELECTRONIC-STRUCTURE; CONDUCTIVITY; PERFORMANCE; ALLOYS;
D O I：
10.1007/s11664-020-08258-9
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report the thermoelectric characterization of off-stoichiometric Bi2Te2Se compounds fabricated with high energy ball milling followed by spark plasma sintering. Among the investigated off-stoichiometric Bi2Te2Se compounds, Bi(2)Te(1.95)Se(1.05)showed a peakZTof 0.76 at 523 K. We observed the scattering mode change in Bi(2)Te(1.95)Se(1.05)compounds. From our results, the off-stoichiometric Bi2Te2Se compounds can be applied asn-type material for power generation at elevated temperature.
引用
收藏
页码：5308 / 5316
页数：9
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