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@ARTICLE{Qiao:57973,
      author       = {Qiao, Z. and Agashe, C. and Mergel, D.},
      title        = {{D}ielectric modeling of transmittance spectra of thin
                      {Z}n{O}:{A}l films},
      journal      = {Thin solid films},
      volume       = {496},
      issn         = {0040-6090},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-57973},
      pages        = {520 - 525},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {A dielectric model comprising band gap transitions and free
                      electron excitations (Drude model) is successfully applied
                      to simulate transmittance spectra of ZnO films doped with
                      $0.5\%,$ $1\%$ and $2\%$ Al. The Drude formula contains a
                      frequency-dependent damping term in order to get a good fit
                      in the visible spectral region. Useful physical parameters
                      obtained from the fit are electron density and mobility
                      within the grains, film thickness, band gap and refractive
                      index. The optically determined film thickness agrees with
                      that obtained with the stylus method within $2\%.$ The
                      optically determined electronic parameters are compared with
                      those obtained by electrical measurements. Contrary to thin
                      In2O3:Sn films, the Drude mobility inside the grains is
                      similar to the direct current Hall mobility indicating more
                      perfect film growth without forming pronounced grain
                      boundaries. Maximum value is 35 cm(2)/V s. The effective
                      electron mass is estimated to be about 0.6 of the free
                      electron mass. The refractive index at 550 run decreases
                      with increasing electron density. (c) 2005 Elsevier B.V. All
                      rights reserved.},
      keywords     = {J (WoSType)},
      cin          = {IPV},
      ddc          = {070},
      cid          = {I:(DE-Juel1)VDB46},
      pnm          = {Erneuerbare Energien},
      pid          = {G:(DE-Juel1)FUEK401},
      shelfmark    = {Materials Science, Multidisciplinary / Materials Science,
                      Coatings $\&$ Films / Physics, Applied / Physics, Condensed
                      Matter},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000234124700054},
      doi          = {10.1016/j.tsf.2005.08.282},
      url          = {https://juser.fz-juelich.de/record/57973},
}