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@ARTICLE{Raijmakers:845088,
author = {Raijmakers, L. H. J. and Büchel, M. and Notten, Peter H.
L.},
title = {{I}mpedance-based temperature measurement method for
organic light-emitting diodes ({OLED}s)},
journal = {Measurement},
volume = {123},
issn = {0263-2241},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2018-02413},
pages = {26 - 29},
year = {2018},
abstract = {This short communication presents a method to measure the
integral temperature of organic light-emitting diodes
(OLEDs). Based on electrochemical impedance measurements at
OLEDs, a non-zero intercept frequency (NZIF) can be
determined which is related to the OLED temperature. The
NZIF is defined as the frequency at which the imaginary part
of the impedance is equal to a predefined (non-zero)
constant. The advantage of using an impedance-based
temperature indication method through an NZIF is that no
hardware temperature sensors are required and that
temperature measurements can be performed relatively fast.
An experimental analysis reveals that the NZIF is clearly
temperature dependent and, moreover, also DC current
dependent. Since the NZIF can readily be measured this
impedance-based temperature indication method is therefore
simple and convenient for many applications using OLEDs and
offers an alternative for traditional temperature sensing.},
cin = {IEK-9},
ddc = {660},
cid = {I:(DE-Juel1)IEK-9-20110218},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000432748600004},
doi = {10.1016/j.measurement.2018.03.058},
url = {https://juser.fz-juelich.de/record/845088},
}