Abstract
Thermoelectric Zn 4-δSb 3 samples with varying Zn concentrations were synthesized. The morphology, along with planar and extended defects was studied using transmission electron microscopy (TEM). For all the Zn concentrations, nanostructuring was observed. Depending on the Zn concentration, two different types of nanostructures were observed: nanovoids and nanograins. Three samples with Zn:Sb ratios of 1.28, 1.30, and 1.36 were studied. The presence of the secondary phases was discussed in terms of the phase diagram. Density functional theory (DFT) calculations further elucidated the formation of secondary phases as a function of different Zn:Sb ratio. ZnSb nanoparticles in β-Zn 4Sb 3.
Original language | English (US) |
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Pages (from-to) | 1652-1657 |
Number of pages | 6 |
Journal | Physica Status Solidi (A) Applications and Materials Science |
Volume | 208 |
Issue number | 7 |
DOIs | |
State | Published - Jul 2011 |
Keywords
- Zn Sb
- density functional theory
- nanostructures
- thermoelectric materials
- transmission electron microscopy
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Electrical and Electronic Engineering
- Materials Chemistry