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@ARTICLE{Ghosh:838878,
      author       = {Ghosh, A. and Schneller, T. and Waser, R. and Majumder, S.
                      B.},
      title        = {{U}nderstanding on the selective carbon monoxide sensing
                      characteristics of copper oxide-zinc oxide composite thin
                      films},
      journal      = {Sensors and actuators / B},
      volume       = {253},
      issn         = {0925-4005},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-07384},
      pages        = {685 - 696},
      year         = {2017},
      abstract     = {In the present work we have demonstrated CuO-ZnO composite
                      thin film with optimized CuO content selectively sense
                      carbon monoxide gas. The ‘n’-type gas sensing
                      characteristics of these composite films are changed to
                      ‘p’-type beyond 8.0 $mol\%$ CuO contents. Through the
                      analyses of photoluminescence spectra in conjunction with
                      XPS we have demonstrated that up to 33.0 $mol\%$ CuO
                      contents the gas sensing characteristics of the composite
                      films are controlled by the type of point defects (oxygen
                      vacancies, zinc interstitials, and copper vacancies) in CuO
                      and ZnO grains. We have hypothesized that these point
                      defects help to chemi-absorb oxygen and CO preferentially on
                      ZnO and CuO grains respectively to yield selective carbon
                      monoxide sensing of ZnO-CuO composite film with 7.0 $mol\%$
                      CuO contents. Beyond 33.0 $mol\%$ CuO contents the effect of
                      point defects diminishes and the gas sensing characteristic
                      are grossly controlled by the nature of the CuO grains
                      covering ZnO grains in the composite films. Our work
                      provides comprehensive insight towards the understanding of
                      the gas sensing characteristics of hetero-composite thin
                      films deposited using a mixed precursor sol.},
      cin          = {PGI-7 / JARA-FIT},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-7-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {524 - Controlling Collective States (POF3-524)},
      pid          = {G:(DE-HGF)POF3-524},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000411124800079},
      doi          = {10.1016/j.snb.2017.06.154},
      url          = {https://juser.fz-juelich.de/record/838878},
}