% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@PHDTHESIS{Kaienburg:873303,
      author       = {Kaienburg, Pascal},
      title        = {{Q}uantifying the {I}mpact of {I}nhomogeneity, {T}ransport
                      and {R}ecombination in {E}merging {T}hin-{F}ilm {S}olar
                      {C}ells},
      volume       = {481},
      school       = {Univ. Duisburg},
      type         = {Dissertation},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2020-00621},
      isbn         = {978-3-95806-440-9},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {vii, 258},
      year         = {2019},
      note         = {Dissertation, Univ. Duisburg, 2019},
      abstract     = {Thin-film solar cells represent the most relevant
                      technological extension of the photovoltaic energy
                      conversion landscape, which is currently dominated by
                      silicon tech-nology. However, the very concept of thin-film
                      solar cells brings inherent challenges. Firstly, the
                      deposition of thin-film solar cells with large aspect ratio
                      introduces inevitable lateral inhomogeneity in the
                      structure. Secondly, absorber films deposited from the gas
                      or liquid phase are of inferior electronic quality compared
                      to monocrystalline silicon technology, meaning that charge
                      carrierre combination is enhanced and charge transport is
                      slowed down. This thesis provides methodologies to identify
                      and assess critical parameters for the two major challenges
                      of inhomogeneous absorber layers and absorber layers with
                      low electronic quality. The presented concepts introduce
                      metrics that allow quantitatively evaluating and comparing
                      different materials or systems with respect to the given
                      phenomena. Thus, these concepts will contribute to the
                      continuous and structured technological progress of
                      thin-film solar cells. Specifically, a methodology is
                      presented to assess any detrimental impact of inhomogeneity
                      in the absorber film in the form of pinholes with regard to
                      the solar cell performance. Different experimentally tested
                      contact configurations turn out to behave qualitatively
                      similar but show major quantitative differences. With regard
                      to the electronic quality, a thorough analysis of the
                      influencing factors on the fill factor is conducted and a
                      material-based electronic quality factor is defined herein.
                      The electronic quality factor functions as a figure of merit
                      for the fill factor that reflects the interplay of charge
                      carrier transport and charge carrierre combination. By
                      providing a method to assess the electronic quality factor
                      of thin-film absorbers through basic characterization
                      methods, the study offers a widely applicable tool to
                      evaluate different materials or technologies in terms of
                      charge carrier collection. This approachis especially
                      valuable for tracking the progress of organic solar cells,
                      [...]},
      cin          = {IEK-5},
      cid          = {I:(DE-Juel1)IEK-5-20101013},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/873303},
}