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@ARTICLE{Cottre:877851,
author = {Cottre, Thorsten and Welter, Katharina and Ronge, Emanuel
and Smirnov, Vladimir and Finger, Friedhelm and Jooss,
Christian and Kaiser, Bernhard and Jaegermann, Wolfram},
title = {{I}ntegrated {D}evices for {P}hotoelectrochemical {W}ater
{S}plitting {U}sing {A}dapted {S}ilicon {B}ased
{M}ulti-{J}unction {S}olar {C}ells {P}rotected by {ALD}
{T}i{O}2 {C}oatings},
journal = {Zeitschrift für physikalische Chemie},
volume = {234},
number = {6},
issn = {2196-7156},
address = {Berlin},
publisher = {De Gruyter},
reportid = {FZJ-2020-02475},
pages = {1155–1169},
year = {2020},
abstract = {In this study, we present different silicon based
integrated devices for photoelectrochemical water splitting,
which provide enough photovoltage to drive the reaction
without an external bias. Thin films of titanium dioxide,
prepared by atomic layer deposition (ALD), are applied as a
surface passivation and corrosion protection. The interfaces
between the multi-junction cells and the protective coating
were optimized individually by etching techniques and
finding optimal parameters for the ALD process. The energy
band alignment of the systems was studied by X-ray
photoelectron spectroscopy (XPS). Electrochemically
deposited platinum particles were used to reduce the HER
overpotential. The prepared systems were tested in a
three-electrode arrangement under AM 1.5 illumination in 0.1
M KOH. In final tests the efficiency and stability of the
prepared devices were tested in a two-electrode arrangement
in dependence of the pH value with a ruthenium-iridium oxide
counter electrode. For the tandem-junction device solar to
hydrogen efficiencies (STH) up to $1.8\%$ were reached, and
the triple-junction device showed a maximum efficiency of
$4.4\%.$},
cin = {IEK-5},
ddc = {540},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {121 - Solar cells of the next generation (POF3-121)},
pid = {G:(DE-HGF)POF3-121},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000542554000006},
doi = {10.1515/zpch-2019-1483},
url = {https://juser.fz-juelich.de/record/877851},
}