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@ARTICLE{Rodenbcher:138611,
      author       = {Rodenbücher, C. and Gensch, T. and Speier, W. and Breuer,
                      U. and Pilch, M and Hardtdegen, H. and Mikulics, M. and
                      Zych, E. and Waser, R. and Szot, K.},
      title        = {{I}nhomogeneity of donor doping in {S}r{T}i{O}3 substrates
                      studied by fluorescence-lifetime imaging microscopy},
      journal      = {Applied physics letters},
      volume       = {103},
      number       = {16},
      issn         = {0003-6951},
      address      = {Melville, NY},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2013-04709},
      pages        = {162904 -},
      year         = {2013},
      abstract     = {Fluorescence-lifetime imaging microscopy (FLIM) was applied
                      to investigate the donor distribution in SrTiO3 single
                      crystals. On the surfaces of Nb- and La-doped SrTiO3,
                      structures with different fluorescence intensities and
                      lifetimes were found that could be related to different
                      concentrations of Ti3+. Furthermore, the inhomogeneous
                      distribution of donors caused a non-uniform conductivity of
                      the surface, which complicates the production of potential
                      electronic devices by the deposition of oxide thin films on
                      top of doped single crystals. Hence, we propose FLIM as a
                      convenient technique (length scale: 1 μm) for
                      characterizing the quality of doped oxide surfaces, which
                      could help to identify appropriate substrate materials.},
      cin          = {PGI-9 / PGI-7 / JARA-FIT / ICS-4 / ZEA-3},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / I:(DE-Juel1)PGI-7-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)ICS-4-20110106 /
                      I:(DE-Juel1)ZEA-3-20090406},
      pnm          = {421 - Frontiers of charge based Electronics (POF2-421)},
      pid          = {G:(DE-HGF)POF2-421},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000326148700064},
      doi          = {10.1063/1.4825367},
      url          = {https://juser.fz-juelich.de/record/138611},
}