Synthesis And Characterization Of K₀.₅Na₀.₅NbO₃ Thin Film

Ng, Siew Xing (2019) Synthesis And Characterization Of K₀.₅Na₀.₅NbO₃ Thin Film. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The aim of this study is to synthesis Potassium Sodium Niobate (KNN) thin film and evaluate the morphology and resistivity of the thin film which fabricated with various annealing temperatures. Firstly, KNN is produced by Sol-gel method where the two alkaline precursors, namely potassium acetate (CH₃COOK), and sodium acetate (CH₃COONa), niobium (V) ethoxide (C₁₀H₂₅NbO₅), acetylacetone and the organic solvent 2-Methoxyethanol are mixed. Next, the homogenous solution is then deposited on the silicon substrate with the aid of spin coating approach. The as-deposited thin films will undergo 250℃ pyrolysis of for 5 min and then being annealed at the ranged temperature which are from 600℃ to 650℃. Following this, a series of material analysis such as X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Raman Spectroscopy on the effects of pyrolysis and annealing temperature is carried out as to find out the optimum annealing temperature. Looking into the results, it was discovered that 650℃ is the optimum annealing temperature as it shows the best crystallization of KNN grain.

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