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Physical modifications of polyvinyl alcohol films containing CoCl2

  • Adly H. El-Sayed
  • Mahmoud A. HamadEmail author
  • Y. Hossien
Regular Article
  • 9 Downloads

Abstract.

Polyvinyl alcohol (PVA) films containing CoCl2 have been successfully prepared by the casting method. X-ray diffraction showed that the crystalline nature of the samples decreases with increasing the concentration of CoCl2 . Vis-UV spectra show that transmittance spectra of PVA doped with CoCl2 decrease with CoCl2 content and confirm the amorphous behavior detected by XRD patterns for high concentration of CoCl2 . UV absorption shows that the value of indirect band gap decreases with CoCl2 content. For low CoCl2 content, the value of direct band gap (Edirect) increases with decreasing the CoCl2 content. However, for high CoCl2 content, Edirect decreases with increasing the CoCl2 content. These results lead us to conclude that CoCl2 -doped PVA films are interesting for the packaging community and for photovoltaic applications.

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Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Adly H. El-Sayed
    • 1
  • Mahmoud A. Hamad
    • 2
    Email author
  • Y. Hossien
    • 1
  1. 1.Physics Department, Faculty of ScienceAlexandria UniversityAlexandriaEgypt
  2. 2.Basic Science Department, Higher Institute of Engineering & TechnologyKing Marriott AcademyAlexandriaEgypt

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