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@ARTICLE{Hutter:874431,
      author       = {Hutter, Eline M. and Kirchartz, Thomas and Ehrler, Bruno
                      and Cahen, David and von Hauff, Elizabeth},
      title        = {{P}itfalls and prospects of optical spectroscopy to
                      characterize perovskite-transport layer interfaces},
      journal      = {Applied physics letters},
      volume       = {116},
      number       = {10},
      issn         = {1077-3118},
      address      = {Melville, NY},
      publisher    = {American Inst. of Physics},
      reportid     = {FZJ-2020-01441},
      pages        = {100501 -},
      year         = {2020},
      abstract     = {Perovskite photovoltaics has witnessed an unprecedented
                      increase in power conversion efficiency over the last
                      decade. The choice of transport layers, through which
                      photo-generated electrons and holes are transported to
                      electrodes, is a crucial factor for further improving both
                      the device performance and stability. In this perspective,
                      we critically examine the application of optical
                      spectroscopy to characterize the quality of the transport
                      layer-perovskite interface. We highlight the power of
                      complementary studies that use both continuous wave and
                      time-resolved photoluminescence to understand non-radiative
                      losses and additional transient spectroscopies for
                      characterizing the potential for loss-less carrier
                      extraction at the solar cell interfaces. Based on this
                      discussion, we make recommendations on how to extrapolate
                      results from optical measurements to assess the quality of a
                      transport layer and its impact on solar cell efficiency.The
                      work of E.M.H. and B.E. is part of the Dutch Research
                      Council (NWO) and was performed at the research institute
                      AMOLF. T.K. acknowledges the Helmholtz Association for
                      funding via the PEROSEED project. D.C acknowledges funding
                      from the Yotam project and the CNRS-Weizmann collaboration.},
      cin          = {IEK-5},
      ddc          = {530},
      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:000520099100001},
      doi          = {10.1063/1.5143121},
      url          = {https://juser.fz-juelich.de/record/874431},
}