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@ARTICLE{Bittkau:850751,
      author       = {Bittkau, K. and Kirchartz, T. and Rau, U.},
      title        = {{O}ptical design of spectrally selective interlayers for
                      perovskite/silicon heterojunction tandem solar cells},
      journal      = {Optics express},
      volume       = {26},
      number       = {18},
      issn         = {1094-4087},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2018-04529},
      pages        = {A750-A760},
      year         = {2018},
      abstract     = {Monolithic perovskite/c-Si tandem solar cells have the
                      potential to exceed the Shockley-Queisser limit for single
                      junction solar cells. However, reflection losses at internal
                      interfaces play a crucial role for the overall efficiency of
                      the tandem devices. Significant reflection losses are caused
                      by the charge selective contacts which have a significantly
                      lower refractive index compared to the absorber materials.
                      Here, we present an approach to overcome a significant part
                      of these reflection losses by introducing a multilayer stack
                      between the top and bottom cell which shows spectrally
                      selective transmission/reflection behavior. The layer stack
                      is designed and optimized by optical simulations using
                      transfer matrix method and a genetic algorithm. The incident
                      sun light is split into a direct part and an isotropic
                      diffuse part. The tandem solar cell with interlayer shows an
                      absolute improvement of short-circuit current density of
                      0.82 mA/cm2.},
      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},
      pubmed       = {pmid:30184834},
      UT           = {WOS:000443431400004},
      doi          = {10.1364/OE.26.00A750},
      url          = {https://juser.fz-juelich.de/record/850751},
}