期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 47, 期 4, 页码 2454-2460出版社
SPRINGER
DOI: 10.1007/s11664-018-6082-3
关键词
Cu2Se; hydrothermal synthesis; hot-pressing; thermoelectric properties
资金
- Foundation of Henan Educational Committee [16A140036]
- Henan Postdoctoral Foundation
- Key Programs for Science and Technology Development of Henan Province
The nanopowders of Cu2Se were synthesized by the hydrothermal method, and then were hot-pressed into bulk pellets. The effects of different preparation conditions on the structure and thermoelectric properties of Cu2Se nanocrystalline bulk alloys were investigated. The resistivity and Seebeck coefficients increase with the increment of hot-pressing temperatures, while they decrease with the increment of hot-pressing time, except for the Seebeck coefficients of the sample hot-pressed for 30 min. Based on the power factors and dimensionless thermoelectric figure-of-merit (ZT) values, the optimum hot-pressing parameters are 700A degrees C and 30 min.
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