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@ARTICLE{Diekmann:894440,
      author       = {Diekmann, Jonas and Caprioglio, Pietro and Futscher, Moritz
                      H. and Le Corre, Vincent M. and Reichert, Sebastian and
                      Jaiser, Frank and Arvind, Malavika and Toro, Lorena
                      Perdigón and Gutierrez-Partida, Emilio and Peña-Camargo,
                      Francisco and Deibel, Carsten and Ehrler, Bruno and Unold,
                      Thomas and Kirchartz, Thomas and Neher, Dieter and
                      Stolterfoht, Martin},
      title        = {{P}athways toward $30\%$ {E}fficient {S}ingle‐{J}unction
                      {P}erovskite {S}olar {C}ells and the {R}ole of {M}obile
                      {I}ons},
      journal      = {Solar RRL},
      volume       = {5},
      number       = {8},
      issn         = {2367-198X},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2021-03222},
      pages        = {2100219},
      year         = {2021},
      abstract     = {Perovskite semiconductors have demonstrated outstanding
                      external luminescence quantum yields, enabling high power
                      conversion efficiencies (PCEs). However, the precise
                      conditions to advance to an efficiency regime above
                      monocrystalline silicon cells are not well understood.
                      Herein, a simulation model that describes efficient
                      p–i–n-type perovskite solar cells well and a range of
                      different experiments is established. Then, important device
                      and material parameters are studied and it is found that an
                      efficiency regime of $30\%$ can be unlocked by optimizing
                      the built-in voltage across the perovskite layer using
                      either highly doped (1019 cm−3) transport layers (TLs),
                      doped interlayers or ultrathin self-assembled monolayers.
                      Importantly, only parameters that have been reported in
                      recent literature are considered, that is, a bulk lifetime
                      of 10 μs, interfacial recombination velocities of
                      10 cm s−1, a perovskite bandgap ( 𝐸gap) of
                      1.5 eV, and an external quantum efficiency (EQE) of
                      $95\%.$ A maximum efficiency of $31\%$ is predicted for a
                      bandgap of 1.4 eV. Finally, it is demonstrated that the
                      relatively high mobile ion density does not represent a
                      significant barrier to reach this efficiency regime. The
                      results of this study suggest continuous PCE improvements
                      until perovskites may become the most efficient
                      single-junction solar cell technology in the near future.},
      cin          = {IEK-5},
      ddc          = {600},
      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:000669260400001},
      doi          = {10.1002/solr.202100219},
      url          = {https://juser.fz-juelich.de/record/894440},
}