Growth of Nanostructured ZnO Nanosheet on ITO/PET Substrate Prepared via Sol Gel Spin Coating and Hot Water Treatment

Abstract:

Zinc Oxide (ZnO) is well known for its wide band gap semiconductor with large excitation energy that serves various application. These unique characteristics had gained much research attention on ZnO nanostructure synthesis and physical properties. In this study, ZnO thin films were deposited on ITO/PET substrate by a spin coating sol-gel process. The starting solution were prepare by dissolved zinc acetate dehydrate (ZnAc) and diethanolamine (DEA) in water (H₂O) and 2-propanol (2-PrOH). Acid Citric (C₆H₈O₇) from 0.2 to 1.0 M were dropped into 100 ml sol-gel solution to study effect of sol-gel environment condition. ZnO thin films were obtained after pre-heating the spin coated thin films at 100 °C for 5 minutes after each coating. The coated substrates were undergone for Hot Water Treatment (HWT) process at 90 °C for 6 hours to grow ZnO nanostructures. The effects of sol-gel environment condition by drop different concentrations of C₆H₈O₇ into the solution were studied. Nanoflakes ZnO were obtained after hot water and hydrothermal treated at 90 °C for 6 hours with 0.2 till 1.0 concentration of C₆H₈O₇ dropped directly in the sol-gel solution. On the basis of the changes in morphology and microstructure induced by hot water treatment, it is concluded that the nanosheets were highly transparent with the visible range (350 – 800 nm) with 70%-90% of Transmittance spectra. Growth of ZnO nanosheet influenced by increment of C₆H₈O₇ mol concentration also with value of roughness RMS.

• Periodical: Materials Science Forum (Volume 840)
• Pages: 252-256
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.840.252
• Online since: January 2016
• Authors: Ili Liyana Khairunnisa Kamardin*, Muhammad Ngah, Ahmad Fadzly Ahmad Fuad, Muhammad Haizat Harun, Ainuddin Ainun Rahmahwati
• Keywords: Hot Water Treatment, Hydrothermal, ITO/PET, Sol-Gel, Zinc Oxide

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