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@ARTICLE{Bittkau:61535,
      author       = {Bittkau, K. and Carius, R. and Lienau, C.},
      title        = {{G}uided optical modes in randomly textured {Z}n{O} thin
                      films imaged by near-field scanning optical microscopy},
      journal      = {Physical review / B},
      volume       = {76},
      number       = {3},
      issn         = {1098-0121},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PreJuSER-61535},
      pages        = {035330},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {We report on near-field optical imaging of light
                      transmission through textured zinc oxide (ZnO) thin films
                      grown on glass substrates. Such ZnO layers are commonly used
                      as a transparent conducting oxide for the front contacts in
                      thin-film solar cells. To increase the quantum efficiency of
                      such solar cells, the ZnO surface is randomly textured,
                      resulting in a higher light scattering and promoting light
                      trapping. Here, we study these phenomena microscopically by
                      imaging the local optical mode profiles in such thin films.
                      Our results give clear evidence for the interconversion of
                      propagating and guided evanescent modes. Such information,
                      which cannot be extracted from more conventional far-field
                      optical studies, may prove helpful in further optimizing the
                      efficiencies of thin-film optoelectronic devices.},
      keywords     = {J (WoSType)},
      cin          = {IEF-5},
      ddc          = {530},
      cid          = {I:(DE-Juel1)VDB813},
      pnm          = {Erneuerbare Energien},
      pid          = {G:(DE-Juel1)FUEK401},
      shelfmark    = {Physics, Condensed Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000248500800105},
      doi          = {10.1103/PhysRevB.76.035330},
      url          = {https://juser.fz-juelich.de/record/61535},
}