% 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”.

@ARTICLE{Zorenko:441951,
      author       = {Zorenko, T. and Gorbenko, V. and Witkiewicz, S. and
                      Zorenko, Yu},
      title        = {{S}tudy of the luminescence of ${E}u^{2+}$ and ${E}u^{3+}$
                      states in ${C}a_3{G}a_2{G}e_3{O}_{12}:{E}u$ garnet using
                      synchrotron radiation excitation},
      journal      = {Optical materials},
      volume       = {99},
      issn         = {0925-3467},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PUBDB-2020-02819},
      pages        = {1-4},
      year         = {2020},
      abstract     = {The work is dedicated to the investigation of $Eu^{2+}$ and
                      $Eu^{3+}$ luminescence centers in the $Ca_3Ga_2Ge_3O_{12}$
                      garnet using synchrotron radiation excitation. The
                      luminescence of $Eu^{2+}$ and $Eu^{3+}$ states was observed
                      in the emission spectra of $Ca_3Ga_2Ge_3O_{12}$:Eu ceramics
                      under excitation with energies in the exciton range and the
                      range above band gap of this garnet. The luminescence of
                      $Eu^{2+}$ ions $Ca_3Ga_2Ge_3O_{12}$ host is observed in the
                      band peaked at 450–460 nm with decay time in the ten ns
                      range and excited in the two wide bands peaked at 5.04 and
                      6.05 eV, related to the allowed 4f-5d transitions of
                      $Eu^{2+}$ ions. The $Eu^{3+}$ luminescence can be excited
                      via the $Eu^{2+}$ luminescence. We have also found the
                      energies of formation of excitons bound with $Eu^{2+}$ and
                      $Eu^{3+}$ ions in Ca3Ga2Ge3O12, being equal to 7.64 and
                      6.95 eV, respectively, and the onset of interband
                      transitions in this garnet which is equal to 7.83 eV at
                      8 K. Strong increase of the luminescence intensity of
                      $Eu^{2+}$ and $Eu^{3+}$ centers is observed under excitation
                      above 21 eV due to multiplication of electronic excitation
                      in $Ca_3Ga_2Ge_3O_{12}$ host.},
      cin          = {DOOR ; HAS-User},
      ddc          = {670},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      experiment   = {EXP:(DE-H253)D-I-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000518692000081},
      doi          = {10.1016/j.optmat.2019.109498},
      url          = {https://bib-pubdb1.desy.de/record/441951},
}