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arXiv 1003.0621cond-mat.mtrl-sci
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纳米Bi2Te3的合成及热电性能研究

Synthesis and thermoelectric characterization of Bi2Te3 nanoparticles

Marcus Scheele, Niels Oeschler, Katrin Meier, Andreas Kornowski, Christian Klinke, Horst Weller

摘要:

我们报告了一种新的合成近单分散,亚10纳米Bi2Te3纳米粒子。首先,描述了一种新的铋纳米颗粒的还原路线,其被用作形成菱面体Bi 2Te 3纳米颗粒的起始原料。通过一种新的肼水合物蚀刻程序的配体去除后,纳米粒子粉末的火花等离子体烧结与保存晶粒尺寸的小球。与以前的Bi2Te3纳米颗粒的性能的工作不同,这种烧结颗粒的完整的热电特性显示出高度降低的热导率和相同的电导率作为散装n型Bi2Te3。

英文摘要:

We report a novel synthesis for near monodisperse, sub-10-nm Bi2Te3 nanoparticles. At first, a new reduction route to bismuth nanoparticles is described which are applied as starting materials in the formation of rhombohedral Bi2Te3 nanoparticles. After ligand removal by a novel hydrazine hydrate etching procedure, the nanoparticle powder is spark plasma sintered to a pellet with preserved crystal grain sizes. Unlike previous works on the properties of Bi2Te3 nanoparticles, the full thermoelectric characterization of such sintered pellets shows a highly reduced thermal conductivity and the same electric conductivity as bulk n-type Bi2Te3.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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