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@ARTICLE{Krckemeier:866282,
      author       = {Krückemeier, Lisa and Rau, Uwe and Stolterfoht, Martin and
                      Kirchartz, Thomas},
      title        = {{H}ow to {R}eport {R}ecord {O}pen‐{C}ircuit {V}oltages in
                      {L}ead‐{H}alide {P}erovskite {S}olar {C}ells},
      journal      = {Advanced energy materials},
      volume       = {10},
      number       = {1},
      issn         = {1614-6840},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2019-05441},
      pages        = {1902573},
      year         = {2020},
      abstract     = {Open‐circuit voltages of lead‐halide perovskite solar
                      cells are improving rapidly and are approaching the
                      thermodynamic limit. Since many different perovskite
                      compositions with different bandgap energies are actively
                      being investigated, it is not straightforward to compare the
                      open‐circuit voltages between these devices as long as a
                      consistent method of referencing is missing. For the purpose
                      of comparing open‐circuit voltages and identifying
                      outstanding values, it is imperative to use a unique,
                      generally accepted way of calculating the thermodynamic
                      limit, which is currently not the case. Here a
                      meta‐analysis of methods to determine the bandgap and a
                      radiative limit for open‐circuit voltage is presented. The
                      differences between the methods are analyzed and an easily
                      applicable approach based on the solar cell quantum
                      efficiency as a general reference is proposed.},
      cin          = {IEK-5},
      ddc          = {050},
      cid          = {I:(DE-Juel1)IEK-5-20101013},
      pnm          = {121 - Solar cells of the next generation (POF3-121)},
      pid          = {G:(DE-HGF)POF3-121},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000495462400001},
      doi          = {10.1002/aenm.201902573},
      url          = {https://juser.fz-juelich.de/record/866282},
}