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@ARTICLE{Krckemeier:902195,
      author       = {Krückemeier, Lisa and Liu, Zhifa and Krogmeier, Benedikt
                      and Rau, Uwe and Kirchartz, Thomas},
      title        = {{C}onsistent {I}nterpretation of {E}lectrical and {O}ptical
                      {T}ransients in {H}alide {P}erovskite {L}ayers and {S}olar
                      {C}ells},
      journal      = {Advanced energy materials},
      volume       = {11},
      number       = {46},
      issn         = {1614-6840},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-04092},
      pages        = {2102290},
      year         = {2021},
      abstract     = {Transient photoluminescence (TPL) and transient
                      photovoltage (TPV) measurements are important and frequently
                      applied methods to study recombination dynamics and
                      charge-carrier lifetimes in the field of halide-perovskite
                      photovoltaics. However, large-signal TPL and small-signal
                      TPV decay times often correlate poorly and differ by orders
                      of magnitude. In order to generate a quantitative
                      understanding of the differences and similarities between
                      the two methods, the impact of sample type (film vs device),
                      large- versus small-signal analysis, and differences in
                      detection mode (voltage vs. luminescence) are explained
                      using analytical and numerical models compared with
                      experimental data. The main solution to achieving a
                      consistent framework that describes both methods is the
                      calculation of a voltage or carrier density dependent decay
                      time that can be interpreted in terms of a capacitive
                      region, a region dominated by defect-assisted recombination
                      and a region that is dominated by higher order recombination
                      (radiative and Auger). It is experimentally shown that in
                      the efficient methylammonium lead-iodide solar cells,
                      effective monomolecular lifetimes ≈2 µs can be
                      consistently measured with TPL and TPV. Furthermore, the
                      shape of the decay time versus voltage or carrier density
                      follows predictions derived from implicit and explicit
                      solutions to differential equations.},
      cin          = {IEK-5},
      ddc          = {050},
      cid          = {I:(DE-Juel1)IEK-5-20101013},
      pnm          = {1215 - Simulations, Theory, Optics, and Analytics (STOA)
                      (POF4-121)},
      pid          = {G:(DE-HGF)POF4-1215},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000710101200001},
      doi          = {10.1002/aenm.202102290},
      url          = {https://juser.fz-juelich.de/record/902195},
}