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Characterization of C12A7 thin films deposited by spray pyrolysis

  • W. Kerrour
  • A. Kabir
  • G. Schmerber
  • B. Boudjema
  • S. Zerkout
  • A. Bouabellou
  • C. Sedrati
Article

Abstract

In this work, conductive C12A7 thin films were deposited by spray pyrolysis method onto glass substrates. The films, structural, optical and electrical properties were investigated as a function of the spray number. X-rays diffraction showed that the deposited films were polycrystalline with a preferential orientation along the (310) planes. Raman spectroscopy confirmed the C12A7 phase and revealed the superoxide radical \( {\text{O}}_{2}^{ - } \) presence. The C12A7 films, optical transmission varied between 57 and 75 % as a function of the spray number. A constant band energy (4.14 eV), determined from UV–visible spectra, was attributed to the electrons transition from the valence band to the occupied cage level. According to the photoluminescence (PL) spectroscopy, two main emission peaks at 1.55 and 2.81 eV were respectively attributed to the formation of the “F+-like centers” and the electron transitions from the occupied cage level to the framework conduction band. Another emission peak at about 2.27 eV was attributed to the cages oxygen vacancies defects. The electrical resistivity variation between 10−4 and 1.36 Ω cm was correlated to the in cages oxygen vacancies produced during films deposition.

Keywords

SnO2 Electrical Resistivity Oxygen Vacancy Aluminum Sulfate Spray Pyrolysis Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors are indebted to one of them: G. Schmerber for his help during the structural and optical characterization.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • W. Kerrour
    • 1
  • A. Kabir
    • 1
  • G. Schmerber
    • 2
  • B. Boudjema
    • 1
  • S. Zerkout
    • 3
  • A. Bouabellou
    • 4
  • C. Sedrati
    • 4
  1. 1.Laboratory of Research on the Physic-Chemical of Surfaces and Interfaces (LRPCSI), Faculty of SciencesUniversité 20 août 1955-SkikdaSkikdaAlgeria
  2. 2.IPCMS, UMR 7504 CNRS-UdSStrasbourgFrance
  3. 3.LCCUniversité des frères Mentouri Constantine IConstantineAlgeria
  4. 4.LCMIUniversité des frères Mentouri Constantine IConstantineAlgeria

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