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Tailoring Bi-Te based nanomaterials by electrodeposition: Morphology and crystalline structure
- Source :
- Materials & Design, Vol 118, Iss, Pp 168-174 (2017)
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Bi2Te3 is the most commonly used thermoelectric material in modern solid-state refrigerators and power generators based on this basic principle. Due to predictions of significant improvements in their efficiency by using nanostructured materials, a thorough study on thin films and nanowires deposited by the electrodeposition method are here presented. The study of the deposition applied potential effect on the morphology, stoichiometry and crystallinity of both thin films and nanowires has been conducted. The morphology and stoichiometry was found to highly depend on the deposition potential, where by increasing it one was able to accurately control the Te% content of the deposits. X-ray diffraction measurements have shown the presence of a strong relation between the material's crystallinity and the deposition potential, where samples ranged from monocrystalline, at very low potentials, to almost completely amorphous, at high potentials. Finally, nanowire diameters were seen to diminish with the applied potential, in conjunction with the general array. Keywords: Electrodeposition, Thin films, Nanowires, Energy harvesting, Morphology
- Subjects :
- Materials science
Mechanical Engineering
Nanowire
Nanotechnology
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Thermoelectric materials
01 natural sciences
0104 chemical sciences
Nanomaterials
Amorphous solid
Monocrystalline silicon
Crystallinity
Chemical engineering
Mechanics of Materials
lcsh:TA401-492
Deposition (phase transition)
lcsh:Materials of engineering and construction. Mechanics of materials
General Materials Science
Thin film
0210 nano-technology
Subjects
Details
- ISSN :
- 02641275
- Volume :
- 118
- Database :
- OpenAIRE
- Journal :
- Materials & Design
- Accession number :
- edsair.doi.dedup.....20054ca2bbafa326f737ba80ba6bdb0c
- Full Text :
- https://doi.org/10.1016/j.matdes.2017.01.020