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@ARTICLE{Lobe:283555,
author = {Lobe, Sandra and Dellen, Christian and Finsterbusch, M. and
Gehrke, H.-G. and Sebold, D. and Tsai, C.-L. and Uhlenbruck,
S. and Guillon, Olivier},
title = {{R}adio frequency magnetron sputtering of
{L}i7{L}a3{Z}r2{O}12 thin films for solid-state batteries},
journal = {Journal of power sources},
volume = {307},
issn = {0378-7753},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2016-01871},
pages = {684 - 689},
year = {2016},
abstract = {Thin film batteries based on solid electrolytes having a
garnet-structure like Li7La3Zr2O12 (LLZ) are considered as
one option for safer batteries with increased power density.
In this work we show the deposition of Ta- and
Al-substituted LLZ thin films on stainless steel substrates
by r.f. magnetron sputtering. The thin films were
characterized by XRD, SEM and time-of-flight-secondary ion
mass spectrometry (ToF-SIMS) to determine crystal structure,
morphology and element distribution. The substrate
temperature was identified to be one important parameter for
the formation of cubic garnet-structured LLZ thin films. LLZ
formation starts at around 650 °C. Single phase cubic thin
films were obtained at substrate temperatures of 700 °C and
higher. At these temperatures an interlayer is formed.
Combination of SEM, ToF-SIMS and XRD indicated that this
layer consists of γ-LiAlO2. The combined total ionic
conductivity of the γ-LiAlO2 interlayer and the LLZ thin
film (perpendicular to the plane) was determined to be 2.0
× 10−9 S cm−1 for the sample deposited at 700 °C.
In-plane measurements showed a room temperature conductivity
of 1.2 × 10−4 S cm−1 with an activation energy of 0.47
eV for the LLZ thin film.},
cin = {IEK-1 / JARA-ENERGY},
ddc = {620},
cid = {I:(DE-Juel1)IEK-1-20101013 / $I:(DE-82)080011_20140620$},
pnm = {131 - Electrochemical Storage (POF3-131) / HITEC -
Helmholtz Interdisciplinary Doctoral Training in Energy and
Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-131 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000370884000083},
doi = {10.1016/j.jpowsour.2015.12.054},
url = {https://juser.fz-juelich.de/record/283555},
}