Journal Article

FZJ-2020-02587

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Pulse electrodeposited bismuth-tellurium superlattices with controllable bismuth content

Bakavets, A. ; Aniskevich, Y. ; Yakimenko, O. ; Jo, J. H. ; Vernickaite, E. ; Tsyntsaru, N. ; Cesiulis, H. ; Kuo, L.-Y.FZJ* ; Kaghazchi, P.FZJ* ; Ragoisha, G. ; Myung, S.-T. (Corresponding author) ; Streltsov, E. (Corresponding author)

2020
Elsevier New York, NY [u.a.]

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/25655  doi:10.1016/j.jpowsour.2019.227605

Abstract: Superlattice structures of (Bi2)m(Bi2Te3)n series with controllable Bi mole fraction from 0.41 to 0.71 are electrodeposited in pulse potentiostatic mode from acidic electrolytes containing Bi(NO3)3 and TeO2 as precursors. Two valence states of bismuth in superlattices are identified by X-ray photoelectron spectroscopy (XPS). One of those states is attributed to interlayered Bi0 which is present in (Bi2)m(Bi2Te3)n superlattice in the form of biatomic layers between bismuth telluride quintuples. X-ray difraction (XRD) analysis and density functional theory (DFT) calculations indicate an increase in subcell parameter asub and decrease in subcell parameter csub with the increase of Bi mole fraction. Biatomic layers of Bi0 are identified with cyclic voltammetry by characteristic anodic peak between potentials of metallic bismuth and Bi2Te3 oxidation. The selective oxidation of Bi-bilayers in (Bi2)m(Bi2Te3)n superlattice at the potential of the anodic peak results in the product corresponding to Bi2Te3 by stoichiometry, but having an expanded crystal structure. Superlattices with controllable Bi mole fraction and Bi2Te3 with “memory effect” may be of interest for design of new thermoelectric materials with controllable parameters.

---

Contributing Institute(s):

1. Werkstoffsynthese und Herstellungsverfahren (IEK-1)

Research Program(s):

1. 113 - Methods and Concepts for Material Development (POF3-113) (POF3-113)

Appears in the scientific report 2020

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

---