Gamma radiation induced nickel oxide/reduced graphene oxide nanoflowers for improved dye-sensitized solar cells

  • H. Abdullah
  • S. Y. Lye
  • S. Mahalingam
  • I. Asshari
  • B. Yuliarto
  • A. Manap


Gamma radiation (γ) exposure was used in dye-sensitised solar cell application to improve the power conversion efficiency. Nickel oxide/reduced graphene oxide (NiO/rGO) as the photoanode layer was prepared by chemical bath deposition method. The NiO/rGO samples were used as the control to analyse the NiO/rGO exposed to γ (NiO/rGO-γ). XRD, FESEM and UV–Vis measurement were conducted to study the structure, morphology and the optical analysis of the samples. NiO/rGO-γ nanoflowers were observed through FESEM images with improved morphology. The porosity of the thin films was also increased after the exposure of γ radiation. The increased energy band gap of NiO/rGO-γ annealed at 400 °C exhibited higher power conversion efficiency of 1.03% with J sc , V oc anf FF of 29 mA/cm2, 0.15 and 0.3 V, respectively.



This work was supported by Exploratory Research Grants Scheme (ERGS/1/2013/TK07/UKM/03/2) and Photonic Technology Laboratory, Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • H. Abdullah
    • 1
  • S. Y. Lye
    • 1
  • S. Mahalingam
    • 2
  • I. Asshari
    • 3
  • B. Yuliarto
    • 4
  • A. Manap
    • 5
  1. 1.Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangiMalaysia
  2. 2.Institute of Sustainable Energy (ISE)Universiti Tenaga NasionalKajangMalaysia
  3. 3.Unit Pengajian Asas Kejuruteraan UPAK, Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan MalaysiaBangiMalaysia
  4. 4.Advanced Functionals Materials Laboratory, Engineering Physics DepartmentInstitut Teknologi BandungBandungIndonesia
  5. 5.Department of Mechanical Engineering, College of EngineeringUniversiti Tenaga NasionalKajangMalaysia

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