期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 40, 期 5, 页码 624-628出版社
SPRINGER
DOI: 10.1007/s11664-010-1484-x
关键词
beta-Ag2Se; hydrothermal method; spark plasma sintering; thermoelectric properties
资金
- Chinese Academy of Sciences (CAS) [KJCX2-YW-H20]
beta-Ag2Se is a narrow-bandgap semiconductor with a high electrical conductivity, reasonably large Seebeck coefficient, and low thermal conductivity. It is regarded as a potential candidate for thermoelectric applications. In this work, we prepared powders of beta-Ag2Se by hydrothermal reaction at 180A degrees C. The spark plasma sintering technique was employed to form compact samples. The thermoelectric properties were measured in a temperature range between 20 K and 350 K. A maximum figure of merit of over 0.6 was found around room temperature. Theoretical calculations were carried out to estimate the Seebeck coefficient of beta-Ag2Se, reproducing the experimental trend qualitatively.
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