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@ARTICLE{Zaffora:860227,
author = {Zaffora, Andrea and Macaluso, Roberto and Habazaki, Hiroki
and Valov, Ilia and Santamaria, Monica},
title = {{E}lectrochemically prepared oxides for resistive switching
devices},
journal = {Electrochimica acta},
volume = {274},
issn = {0013-4686},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2019-01011},
pages = {103 - 111},
year = {2018},
abstract = {Redox-based resistive switching memories (ReRAM) based on
metal oxides are considered as the next generation
non-volatile memories and building units for neuromorphic
computing. Using different deposition techniques results
however in different structural and electric properties,
modulating the device performance. In this study HfO2 and
Nb2O5 were prepared electrochemically by anodizing
sputtering-deposited Hf and Nb in borate buffer solution.
Photoelectrochemical measurements were used to study the
solid state properties of the anodic oxides, such as band
gap and flat band potential. In the case of anodic HfO2,
detected photocurrent is ascribed to optical transitions
between localized (generated by the presence of oxygen
vacancies into the oxide) and extended states. Impedance
measurements disclosed the formation of n-type Nb2O5 and
insulating HfO2. Pt top electrode was deposited onto the
metal/anodic oxide junctions to fabricate ReRAM cells.
Whereas switching behaviour of Nb/anodic Nb2O5/Pt cells was
not reliable, good endurance and retention performances were
proved in the case of Hf/anodic HfO2/Pt cells, showing that
electrochemical growth of the oxides can be a reliable way
to fabricate solid electrolytes for resistive switching
memories.},
cin = {PGI-7 / JARA-FIT},
ddc = {540},
cid = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$},
pnm = {521 - Controlling Electron Charge-Based Phenomena
(POF3-521)},
pid = {G:(DE-HGF)POF3-521},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000432158000013},
doi = {10.1016/j.electacta.2018.04.087},
url = {https://juser.fz-juelich.de/record/860227},
}