Kadel K, Kumari Latha, Li W Z, Huang Jian Yu, Provencio Paula P
Department of Physics, Florida International University, Miami, FL, 33199, USA.
Sandia National Laboratories, Center for Integrated Nanotechnologies (CINT), Albuquerque, NM, 87185, USA.
Nanoscale Res Lett. 2011 Dec;6(1):57. doi: 10.1007/s11671-010-9795-7. Epub 2010 Oct 1.
Bismuth selenide (Bi2Se3) nanostructures were synthesized via solvothermal method. The crystallinity of the as-synthesized sample has been analyzed by X-ray diffraction, which shows the formation of rhombohedral Bi2Se3. Electron microscopy examination indicates that the Bi2Se3 nanoparticles have hexagonal flake-like shape. The effect of the synthesis temperature on the morphology of the Bi2Se3 nanostructures has also been investigated. It is found that the particle size increases with the synthesis temperature. Thermoelectric properties of the Bi2Se3 nanostructures were also measured, and the maximum value of dimensionless figure of merit (ZT) of 0.096 was obtained at 523 K.
通过溶剂热法合成了硒化铋（Bi2Se3）纳米结构。采用X射线衍射分析了合成样品的结晶度，结果表明形成了菱面体Bi2Se3。电子显微镜检查表明Bi2Se3纳米颗粒具有六边形片状形状。还研究了合成温度对Bi2Se3纳米结构形态的影响。发现粒径随合成温度的升高而增大。还测量了Bi2Se3纳米结构的热电性能，在523 K时获得了无量纲品质因数（ZT）的最大值0.096。
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