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@PHDTHESIS{Henneke:834675,
      author       = {Henneke, Caroline},
      title        = {{K}inetic and thermodynamic considerations on the formation
                      of heteromolecular layers on metal surfaces},
      volume       = {149},
      school       = {RWTH Aachen},
      type         = {Dr.},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2017-04578},
      isbn         = {978-3-95806-245-0},
      series       = {Schriften des Forschungszentrums Jülich. Reihe
                      Schlüsseltechnologien / Key Technologies},
      pages        = {VII, 157, XIV S.},
      year         = {2017},
      note         = {RWTH Aachen, Diss., 2015},
      abstract     = {A systematic study of the growth of a heteromolecular
                      adsorbate system in the submonolayer regime is presented in
                      this work. The properties of such systems are determined by
                      the interplay between molecule-substrate and
                      molecule-molecule interactions, and hence a careful
                      selection of molecule on the one hand, and substrates on the
                      other hand is essential. The molecules PTCDA and CuPc were
                      chosen as adsorbates since they represent a donor-acceptor
                      model system for organic electronics. Their intermolecular
                      interaction is very different in the homomolecular phases
                      with an attraction between PTCDA molecules and a mostly
                      repulsive interaction in the case of CuPc. Consequently,
                      these molecules form compact islands (PTCDA) or a dilute
                      disordered gas-like phase (CuPc) which enables fundamentally
                      different ways of preparing the heteromolecular films. Two
                      different substrates, which were employed to investigate the
                      influence of the metal-molecule interaction on the growth,
                      are Ag(111) and Cu(001). The phase diagram of the
                      heteromolecular PTCDA-CuPc system on Ag(111) at 300K is the
                      key finding in this work and is discussed in chapter
                      6.2.3.1. It contains eight different regions with one or two
                      different crystalline phases which coexist with areas of a
                      disordered phase of both molecules. Only the disordered
                      phase is present on the surface in a ninth region. It is
                      found that the local density of CuPc in the disordered phase
                      is the decisive parameter for the occurrence of the
                      different phases. Different phases exist when certain
                      critical values of the CuPc density are exceeded. A number
                      of other investigations have also been performed and most of
                      their results are essential for the understanding of this
                      phase diagram since its shape is determined by a complex
                      interplay between different forces. $\textbf{Homomolecular
                      systems}$ The growth of the homomolecular systems is studied
                      in the first part of this work since it is impossible to
                      understand the growth processes of heteromolecular systems
                      without first understanding the growth of the respective
                      homomolecular systems. Detailed analyses were performed to
                      determined the interaction between the molecules and the
                      molecules and the substrate. The attractive intermolecular
                      interaction dominates the growth of PTCDA leading to the
                      growth of crystalline islands already at very low coverages
                      on both metal sub- strates. The island size distribution and
                      the island density are used to quantitatively deter- mine
                      the binding energy between the molecules on Cu(001) to be
                      1.6 eV which is the energy required to detach one molecules
                      from a molecular cluster. This high binding[...]},
      cin          = {PGI-3},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      urn          = {urn:nbn:de:0001-2017081712},
      url          = {https://juser.fz-juelich.de/record/834675},
}