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Effects of Bi2Se3 Amount in Thermoelectric Performance of Bi-2(TeSe)(3) Materials Fabricated by High-Energy Ball Milling

Title
Effects of Bi2Se3 Amount in Thermoelectric Performance of Bi-2(TeSe)(3) Materials Fabricated by High-Energy Ball Milling
Author
조국영
Keywords
Bi-2(TeSe)(3) materials; high-energy ball milling; microstructure; thermoelectric properties
Issue Date
2016-07
Publisher
WILEY-BLACKWELL
Citation
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, v. 13, No. 4, Page. 711-717
Abstract
Amount of Bi2Se3 has significant role in controlling thermoelectric properties of n-type Bi-2(TeSe)(3) material. In this study, effects of Se alloying amount in Bi-2(TeSe)(3) thermoelectric materials fabricated by high-energy ball milling and spark plasma sintering were studied and compared with other fabrication methods. Amount of Bi2Se3 (5%, 10%, 15%, and 20%) did not have any significant effect over fabricated powder size, grains of consolidated bulks, and mechanical properties; however, electrical properties and thermoelectric efficiency were noticeably influenced. Both carrier concentration and carrier mobility decreased with increase in Se amount. In total, 20% Se alloying was effective in improving thermoelectric figure of merit ZT value by almost 40% compared with only 5% Se alloying.
URI
https://onlinelibrary.wiley.com/doi/full/10.1111/ijac.12534https://repository.hanyang.ac.kr/handle/20.500.11754/102605
ISSN
1546-542X; 1744-7402
DOI
10.1111/ijac.12534
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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