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Pulsed current-voltage electrodeposition of stoichiometric Bi2Te3 nanowires and their crystallographic characterization by transmission electron backscatter diffraction

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type , Journal 30 Oct 2019 Spain Publisher:Informa UK LimitedJournal:Science and Technology of Advanced Materials, volume 20, pages 1,022-1,030 (issn: 1468-6996, eissn: 1878-5514,

Authors: Manzano, Cristina V.; Polyakov, Mikhail N.; Maiz, Jon; Aguirre, Myriam H.; Maeder, Xavier; Martín-González, Marisol;

doi: 10.1080/14686996.2019.1671778

pmid: 31723369

pmc: PMC6830284

handle: 10261/202466

Pulsed current-voltage electrodeposition of stoichiometric Bi2Te3 nanowires and their crystallographic characterization by transmission electron backscatter diffraction

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Abstract

Bi2Te3 nanowires with diameters ranging from 25 to 270 nm, ultra-high aspect ratio, and uniform growth front were fabricated by electrodeposition, pulsing between zero current density during the off time and constant potential during the on time (pulsed-current-voltage method, p-IV). The use of zero current density during the off time is to ensure no electrodeposition is carried out and the system is totally relaxed. By this procedure, stoichiometric nanowires oriented perpendicular to the c-axis is obtained for the different diameters of porous alumina templates. In addition, the samples show a uniform growth front with ultra-high aspect ratio single crystal nanowires. The high degree of crystallinity was verified by transmission electron backscatter diffraction. This characterization revealed that the nanowires present both large single crystalline areas and areas with alternating twin configurations.

Country

Spain

Related Organizations

University of Zaragoza
Spain
Spanish National Research Council
Spain
Institute of Micro and Nanotechnology
Spain
Institute of Micro and Nanotechnology
Spain
Swiss Federal Laboratories for Materials Science and Technology
Switzerland

Keywords

transmission electron backscatter diffraction (t-ebsd), Nanowires, thermoelectric materials, pulsed electrodeposition, Bismuth telluride, Pulsed electrodeposition, nanowires, bismuth telluride, TA401-492, Thermoelectric materials, Focus on Thermoelectric Materials, Materials of engineering and construction. Mechanics of materials, TP248.13-248.65, Biotechnology

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