Facile Chemical Synthesis of Nanocrystalline Thermoelectric Alloys Based on Bi-Sb-Te-Se

Published

August 2, 2010

Author(s)

Anuja Datta, Jagannath Paul, Arik Kar, Amitava Patra, Z. L. Sun, Lidong Chen, Joshua B. Martin, George S. Nolas

Abstract

High yield syntheses of size confined Bi2Te3, Sb2Te3 and their alloy nanoparticles and nanoflakes were carried out by a facile glycol mediated solvothermal process. Phase purity and good crystalline quality were achieved for all alloy compositions by this synthesis process. The isotropic and anisotropic shaped nanocrystals were obtained without using any capping molecule, templates or ligands. Plausible growth mechanisms have been proposed. Densification via Spark Plasma Sintering allowed for dense bulk polycrystalline specimens with non-agglomerated nanograins. This work is of interest in the context of research towards enhancing the thermoelectric properties of these materials. The synthesis process may be modified and extended to design nanostructures of thermoelectric materials possessing related crystal structures.

Citation

Crystal Growth & Design

Pub Type

Journals

Download Paper

https://doi.org/10.1021/cg100560s

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Keywords

Thermoelectric, nanocrystalline, Seebeck coefficient

Citation

Datta, A. , Paul, J. , Kar, A. , Patra, A. , Sun, Z. , Chen, L. , Martin, J. and Nolas, G. (2010), Facile Chemical Synthesis of Nanocrystalline Thermoelectric Alloys Based on Bi-Sb-Te-Se, Crystal Growth & Design, [online], https://doi.org/10.1021/cg100560s, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905583 (Accessed December 2, 2024)