Bismuth telluride hexagonal nanoplatelets and their two-step epitaxial growth

Weigang Lu; Yong Ding; Yuxi Chen; Zhong Lin Wang; Jiye Fang

doi:10.1021/ja052286j

Bismuth telluride hexagonal nanoplatelets and their two-step epitaxial growth

J Am Chem Soc. 2005 Jul 20;127(28):10112-6. doi: 10.1021/ja052286j.

Authors

Weigang Lu¹, Yong Ding, Yuxi Chen, Zhong Lin Wang, Jiye Fang

Affiliation

¹ Department of Chemistry and Advanced Materials Research Institute, University of New Orleans, New Orleans, Louisiana 70148, USA.

PMID: 16011378
DOI: 10.1021/ja052286j

Abstract

We report a synthesis of discrete, single-crystal, defect-free, and hexagonal Bi2Te3 nanoplatelets using a high-temperature organic solution approach, and we demonstrate a two-step epitaxial growth of the cylindrical strings of Bi2Te3 nanoplatelets on the surface of the Te rod by packing them along c-axis in a top-bottom-top-bottom sequence. This type of building-up provides additional opportunity for the exploration of novel thermoelectric properties from such quantum-confined materials, in which the boundary scattering of phonons is anticipated to enhance.