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Preparation and Thermoelectric Properties of Cu2Se Hot-Pressed from Hydrothermal Synthesis Nanopowders

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Abstract

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 700°C and 30 min.

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Acknowledgements

This work was supported by the Foundation of Henan Educational Committee (Grant No. 16A140036), the Henan Postdoctoral Foundation, and the Key Programs for Science and Technology Development of Henan Province.

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Authors and Affiliations

  1. Key Laboratory of Material Physics of Ministry of Education, and Physical Engineering College, Zhengzhou University, Zhengzhou, 450052, China

    F. Gao, S. L. Leng, Z. Zhu, X. J. Li, X. Hu & H. Z. Song

  2. Zhengzhou Institute of Technology, Zhengzhou, 450044, China

    F. Gao

  3. College of Material and Chemical Engineering, Tongren University, Tongren, 554300, China

    S. L. Leng

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  1. F. Gao
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  2. S. L. Leng
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  3. Z. Zhu
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  4. X. J. Li
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  5. X. Hu
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  6. H. Z. Song
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Correspondence to H. Z. Song.

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Gao, F., Leng, S.L., Zhu, Z. et al. Preparation and Thermoelectric Properties of Cu2Se Hot-Pressed from Hydrothermal Synthesis Nanopowders. J. Electron. Mater. 47, 2454–2460 (2018). https://doi.org/10.1007/s11664-018-6082-3

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  • DOI: https://doi.org/10.1007/s11664-018-6082-3

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