Solvothermal preparation and characterization of nanocrystalline Bi2Te3 powder with different morphology |
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| Authors: | Yuan DengXi-song Zhou Guo-dan WeiJing Liu Ce-Wen Nan Shu-jing Zhao |
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| Institution: | a Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
b School of Materials and Engineering, Jiamusi University, Heilongjiang 154000, People's Republic of China |
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| Abstract: | Bi2Te3-based alloys are currently best-known, technological important thermoelectric materials near room temperature. In this paper, nanocrystalline Bi2Te3 with different morphologies was synthesized by a solvothermal process based on the reaction between BiCl3, Te, and KBH4 in N,N-dimethylformamide at 100-180 °C. KBH4 was used as a reducing agent. The products were characterized by X-ray diffraction and transmission electron microscopy (TEM). The particle morphologies and size are dependent on the reaction temperature and time. A possible formation mechanism is proposed. |
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| Keywords: | A Chalcogenides A Nanostructures B Chemical synthesis |
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