Tailoring Bi-Te based nanomaterials by electrodeposition: Morphology and crystalline structure

被引：12

作者：

Proenca, M. P. ^{[1
,2
]}

Rosmaninho, M. ^{[1
]}

Resende, P. M. ^{[1
]}

Sousa, C. T. ^{[1
]}

Ventura, J. ^{[1
]}

Araujo, J. P. ^{[1
]}

Fernandes, L. ^{[3
]}

Tavares, P. B. ^{[3
]}

Pereira, A. M. ^{[1
]}

机构：

[1] Univ Porto, IFIMUP & IN Inst Nanosci & Nanotechnol, Dept Fis & Astron, Rua Campo Alegre 687, P-4169007 Oporto, Portugal

[2] Univ Politecn Madrid, ISOM, Avda Complutense S-N, E-28040 Madrid, Spain

[3] Univ Tras Os Montes & Alto Douro, Dept Quim, CQ VR, P-5001801 Vila Real, Portugal

来源：

MATERIALS & DESIGN | 2017年 / 118卷

关键词：

Electrodeposition; Thin films; Nanowires; Energy harvesting; Morphology; TELLURIDE NANOWIRE ARRAYS; THERMOELECTRIC-MATERIALS; THIN-FILMS; ELECTROCHEMICAL DEPOSITION; SILICON NANOWIRES; POWER-GENERATION; ANODIC ALUMINA; BI2TE3; FABRICATION; GROWTH;

D O I：

10.1016/j.matdes.2017.01.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：168 / 174

页数：7

共 47 条

[21] Optimization of chemical and electrochemical parameters for the preparation of n-type Bi2Te2.7Se0.3 thin films by electrodeposition [J].