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EFFECTS OF SUBSTRATE TEMPERATURE ON STRUCTURAL, OPTICAL AND SURFACE MORPHOLOGICAL PROPERTIES OF PULSED LASER DEPOSITEDZnOTHIN FILMS

Author

Listed:
  • KHALIQ MAHMOOD

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

  • SHAZIA BASHIR

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

  • M. KHALEEQ-UR-RAHMAN

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

  • NAZAR FARID

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

  • MAHREEN AKRAM

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

  • ASMA HAYAT

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

  • FAIZAN-UL-HAQ

    (Centre for Advanced Studies in Physics (CASP), GC University Lahore, Pakistan)

Abstract

The effect of substrate temperature on the structural, optical and morphological properties ofZnOthin films has been investigated.ZnOthin films were deposited on quartz substrate for various temperatures ranging from room temperature to 250°C by pulsed laser deposition (PLD) technique. Nd:YAG laser (532 nm, 100 mJ, 6 ns, 10 Hz) with corresponding fluence of 6 J/cm2was employed for the ablation ofZnOtarget. Characterization of the thin films was carried out using X-ray diffraction (XRD), high resolution UV-visible spectrometer, atomic force microscope (AFM) and scanning electron microscope (SEM). From XRD analysis, the amorphous behaviors of films at room temperature and crystalline behavior along the preferred orientation of (002) is exhibited for higher substrate temperature. The transmittances of grown films increase with the increasing substrate temperature. The evaluated values of bandgap energies increase with increasing substrate temperature up to the range of 150°C and then monotonically decrease with the further increase in temperature. AFM and SEM analysis illustrates that the density and height of grains for deposited films increase significantly with increasing substrate temperature.

Suggested Citation

  • Khaliq Mahmood & Shazia Bashir & M. Khaleeq-Ur-Rahman & Nazar Farid & Mahreen Akram & Asma Hayat & Faizan-Ul-Haq, 2013. "EFFECTS OF SUBSTRATE TEMPERATURE ON STRUCTURAL, OPTICAL AND SURFACE MORPHOLOGICAL PROPERTIES OF PULSED LASER DEPOSITEDZnOTHIN FILMS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 20(03n04), pages 1-7.
    • Handle: RePEc:wsi:srlxxx:v:20:y:2013:i:03n04:n:s0218625x13500327
    DOI: 10.1142/S0218625X13500327
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