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

被引：8

作者：

Manzano, Cristina, V ^{[1
,2
]}

Polyakov, Mikhail N. ^{[2
]}

Maiz, Jon ^{[1
]}

Aguirre, Myriam H. ^{[3
,4
,5
]}

Maeder, Xavier ^{[2
]}

Martin-Gonzalez, Marisol ^{[1
]}

机构：

[1] CEI UAM, CSIC, CNM, IMN, Isaac Newton 8, E-28760 Tres Cantos, Spain

[2] Empa, Swiss Fed Labs Mat Sci & Technol, Lab Mech Mat & Nanostruct, Thun, Switzerland

[3] Univ Zaragoza, Lab Adv Microscopy, Zaragoza, Spain

[4] Univ Zaragoza, Dept Phys Condensed Matter, Zaragoza, Spain

[5] Univ Zaragoza, CSIC, ICMA, Inst Nanosci Aragon, Zaragoza, Spain

来源：

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS | 2019年 / 20卷 / 01期

基金：

欧盟地平线“2020”;

关键词：

Pulsed electrodeposition; bismuth telluride; thermoelectric materials; nanowires; transmission electron backscatter diffraction (t-EBSD); BISMUTH TELLURIDE; TOPOLOGICAL INSULATORS; THERMOELECTRIC PROPERTIES; THERMAL-PROPERTIES; ARRAYS;

D O I：

10.1080/14686996.2019.1671778

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：1022 / 1030

页数：9

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