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@ARTICLE{Bakavets:878031,
author = {Bakavets, Aliaksei and Aniskevich, Yauhen and Yakimenko,
Oleg and Jo, Jae Hyeon and Vernickaite, Edita and Tsyntsaru,
Natalia and Cesiulis, Henrikas and Kuo, Liang-Yin and
Kaghazchi, Payam and Ragoisha, Genady and Myung, Seung-Taek
and Streltsov, Eugene},
title = {{P}ulse electrodeposited bismuth-tellurium superlattices
with controllable bismuth content},
journal = {Journal of power sources},
volume = {450},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2020-02587},
pages = {227605 -},
year = {2020},
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.},
cin = {IEK-1},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013},
pnm = {113 - Methods and Concepts for Material Development
(POF3-113)},
pid = {G:(DE-HGF)POF3-113},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000517663800102},
doi = {10.1016/j.jpowsour.2019.227605},
url = {https://juser.fz-juelich.de/record/878031},
}