Study of Surface Morphology and Optical Properties of ZnO Thin Film Synthesized Using CBD Technique

Authors Mugdha Patki1, Rohan Bagade1, Ganesh Madkaikar1, Poonam Agarwal2

1D. G. Ruparel College, Mahim, 400016 Mumbai, India

2G. N. Khalsa College, Matunga, 400019 Mumbai, India

Issue Volume 12, Year 2020, Number 2
Dates Received 15 February 2020; revised manuscript received 10 April 2020; published online 25 April 2020
Citation Mugdha Patki, Rohan Bagade, Ganesh Madkaikar, Poonam Agarwal, J. Nano- Electron. Phys. 12 No 2, 02013 (2020)
PACS Number(s) 68.55. – a, 78.66.Bz
Keywords Surface morphology (2) , Optical properties (22) , ZnO (81) , Chemical bath deposition (CBD) technique.

A chemical bath deposition (CBD) technique was utilized in the synthesis of the Zinc oxide (ZnO) thin films. Aqueous solution of ZnCl2 and NaOH were the sources of Zinc and Oxygen in this process. The thin films were deposited on microscope glass slides. We used Wedge shaped film method to estimate the thickness of the ZnO film. The average thickness of the films obtained was 55.349 m. Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDAX) were used in the study of the surface morphology and elemental composition of ZnO film. The topographical images (shape and size) were obtained in SEM. The presence of Zn and O was confirmed through EDAX. Optical properties of the film were studied by Ultraviolet-Visible spectroscopy technique. The analysis of the UV-Vis spectrum suggested the optical band gap of the ZnO film was 3.54 eV.

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