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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 12
BKCSDE 33(12)
December 20, 2012 

Morphology Controlled Synthesis of Nanostructured Bi2Te3
Hee Jin Kim, Mi-Kyung Han*, Ha-young Kim, Wooyoung Lee*, Sung-Jin Kim*
Bi2Te3, Nanorod, Nanoparticle, Growth mechanism, Thermoelectric material
Nanostructured thermoelectric bismuth telluride (Bi2Te3) powders with various morphologies, such as nanoplates, nanorods, and nanotubes, were prepared by a hydrothermal method based on the reaction between BiCl3, Te, and sodium ethylenediaminetetraacetate (Na2-EDTA) at 150, 180, and 210 °C. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and selected area electron diffraction (SAED). The effect of reaction temperature on the morphology of the Bi2Te3 particles was investigated, and the possible mechanism of morphology control was proposed.
3977 - 3980
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