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@ARTICLE{Bittkau:836732,
      author       = {Bittkau, Karsten and Hoffmann, André and Paetzold, Ulrich
                      and Carius, Reinhard},
      title        = {{B}roadening of {L}ight {C}oupling to {W}aveguide {M}odes
                      in {S}olar {C}ells by {D}isordered {G}rating {T}extures},
      journal      = {Applied Sciences},
      volume       = {7},
      number       = {7},
      issn         = {2076-3417},
      address      = {Basel},
      publisher    = {MDPI},
      reportid     = {FZJ-2017-05791},
      pages        = {725},
      year         = {2017},
      abstract     = {We investigated the light coupling to waveguide modes in
                      nanophotonic thin-film solar cells exhibiting a tailored
                      disordered grating texture by rigorous optical simulations.
                      Such disordered nanophotonic light trapping concepts have
                      demonstrated enhanced short-circuit current density compared
                      to ordered nanophotonic thin-film solar cells. This
                      observation is commonly explained by a spectral broadening
                      of the resonant light coupling to waveguide modes. In this
                      work, we investigated the origin of this spectral
                      broadening. We identified two basic mechanisms that lead to
                      a spectral broadening of the light coupling to waveguide
                      modes: (1) the broadening of the wave vector transferred by
                      the disordered interface texture and (2) the broadening of
                      the waveguide mode due to the distortion of the wave guiding
                      absorber layer. Depending on the type of disorder, the
                      contribution from each of the mechanisms varies.},
      cin          = {IEK-5},
      ddc          = {600},
      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:000407700400082},
      doi          = {10.3390/app7070725},
      url          = {https://juser.fz-juelich.de/record/836732},
}