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@ARTICLE{Hensling:848173,
author = {Hensling, Felix and Keeble, D. J. and Zhu, J. and Brose, S.
and Xu, C. and Gunkel, F. and Danylyuk, S. and Nonnenmann,
S. S. and Egger, W. and Dittmann, R.},
title = {{UV} radiation enhanced oxygen vacancy formation caused by
the {PLD} plasma plume},
journal = {Scientific reports},
volume = {8},
number = {1},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2018-03439},
pages = {8846},
year = {2018},
abstract = {Pulsed Laser Deposition is a commonly used non-equilibrium
physical deposition technique for the growth of complex
oxide thin films. A wide range of parameters is known to
influence the properties of the used samples and thin films,
especially the oxygen-vacancy concentration. One parameter
has up to this point been neglected due to the challenges of
separating its influence from the influence of the impinging
species during growth: the UV-radiation of the plasma plume.
We here present experiments enabled by a specially designed
holder to allow a separation of these two influences. The
influence of the UV-irradiation during pulsed laser
deposition on the formation of oxygen-vacancies is
investigated for the perovskite model material SrTiO3. The
carrier concentration of UV-irradiated samples is nearly
constant with depth and time. By contrast samples not
exposed to the radiation of the plume show a depth
dependence and a decrease in concentration over time. We
reveal an increase in Ti-vacancy–oxygen-vacancy-complexes
for UV irradiated samples, consistent with the different
carrier concentrations. We find a UV enhanced oxygen-vacancy
incorporation rate as responsible mechanism. We provide a
complete picture of another influence parameter to be
considered during pulsed laser depositions and unravel the
mechanism behind persistent-photo-conductivity in SrTiO3.},
cin = {PGI-7 / JARA-FIT},
ddc = {000},
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},
pubmed = {pmid:29892095},
UT = {WOS:000434776600052},
doi = {10.1038/s41598-018-27207-5},
url = {https://juser.fz-juelich.de/record/848173},
}