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MORPHOLOGICAL CHANGE IN Cu-DOPED ZnO FROM ROD-LIKE TO FLOWERS-LIKE NANOSTRUCTURES: A VITAL ROLE FOR THE OPTICAL BAND GAP TUNING

Author

Listed:
  • S. NASEEM SHAH

    (Department of Physics, University of Karachi, Karachi, Pakistan)

  • M. NAEEM

    (#x2020;Department of Physics, Federal Urdu University of Arts, Science and Technology, Karachi, Pakistan)

  • S. RIZWAN ALI

    (#x2020;Department of Physics, Federal Urdu University of Arts, Science and Technology, Karachi, Pakistan)

  • S. MAHMOOD

    (Department of Physics, University of Karachi, Karachi, Pakistan)

  • S. IMRAN ALI

    (#x2021;Department of Applied Chemistry and Chemical Technology, University of Karachi, Karachi, Pakistan)

  • YASMEEN BIBI

    (#xA7;Department of Chemistry, Federal Urdu University of Arts, Science and Technology, Karachi, Pakistan)

  • S. MASOOD RAZA

    (#x2020;Department of Physics, Federal Urdu University of Arts, Science and Technology, Karachi, Pakistan)

  • NAJAM UL HASSAN

    (#xB6;School of Material Science and Engineering, Nanjing University of Science and Technology, Nanjing, P. R. China)

Abstract

We demonstrate a morphological change in Zn1-xCuxO (x= 0–5%) samples from rod-like (x≤ 2%) to flower-like (x> 2%) with increasing Cu concentration. This effect is attributed to Cu induced change in the ZnO growth mode from one-dimensional (forming rod-like) to two-dimensional (forming flower-like) structures. The optical properties of the samples were also found to be well correlated with the observed morphological changes in the samples. Optical bandgap decreases with increasing x, exhibiting a minimum (2.88eV) at x= 2% and afterwards it increases slightly up to 3.00eV for x= 5%. Our results show an intriguing possibility of bandgap tuning by the sample morphology.

Suggested Citation

  • S. Naseem Shah & M. Naeem & S. Rizwan Ali & S. Mahmood & S. Imran Ali & Yasmeen Bibi & S. Masood Raza & Najam Ul Hassan, 2017. "MORPHOLOGICAL CHANGE IN Cu-DOPED ZnO FROM ROD-LIKE TO FLOWERS-LIKE NANOSTRUCTURES: A VITAL ROLE FOR THE OPTICAL BAND GAP TUNING," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(Supp01), pages 1-8, November.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:supp01:n:s0218625x18500014
    DOI: 10.1142/S0218625X18500014
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