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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},
}