KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/kmitl/1

Browse

Settings

Author: search.filters.author.Chaithanatkun, NatpasitSubject: search.filters.subject.Zinc oxide

Search Results

Now showing 1 - 2 of 2
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    The influence of annealing temperature on structural properties of zinc oxide nanoparticles synthesized by precipitation method
    (2017-01-01)
    Chaithanatkun, Natpasit
    ;
    Onlaor, Korakot
    ;
    Tunhoo, Benchapol
    In the present work, the precipitation method was used to prepare zinc oxide nanoparticles in the presence of zinc nitrate and potassium hydroxide as zinc precursor and hydroxide precursor, respectively. The influence of annealing temperature on the structural, morphological, and vibrational properties of zinc oxide nanoparticles was studied by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Fourier transform Raman spectroscopy (FT-Raman), and Fourier transform infrared spectroscopy (FT-IR) techniques. The effects of annealing temperature on the crystallite size of zinc oxide nanoparticles were investigated. The XRD results represented that the zinc oxide nanoparticles exhibited high crystallinity of hexagonal wurtzite crystal structure. The average crystallite size of nanoparticles increased from 25 nm to 31 nm with an increase in annealing temperature from 600°C to 800°C. The SEM images showed that the prepared zinc oxide nanoparticles in this present work were spherical in shape and had the larger size with increasing annealing temperature. FT-Raman and FT-IR spectra confirmed that the quality of Zn-O vibrational mode was stronger at higher annealing temperature.
      1
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Influence of post-annealing temperature on the morphological, structural and optical properties of spin coated zinc oxide thin films
    (2017-01-01)
    Chaithanatkun, Natpasit
    ;
    Fujihara, Takeshi
    ;
    Kamano, Masaru
    ;
    Konishi, Tomoya
    ;
    Uehara, Nobutomo
    In this study, zinc oxide films were fabricated on quartz glass substrate using spin coating technique with 2 molar of zinc oxide in organic solvent as starting materials. The fabricated sample was post-annealed at different temperature from 350 °C to 750 °C for 60 minutes. The energy dispersive x-ray spectroscopy (EDS) confirmed that zinc oxide coating film was fabricated on the quartz glass substrate. The crystallography of zinc oxide films were analyzed by X-ray diffraction (XRD). The crystallite size of zinc oxide nanoparticles was determined from the full-width at half maximum (FWHM) of XRD peaks using Debye-Scherrer's equation and showed that the zinc oxide films had highly crystalline quality in hexagonal wurtzite crystal structure. The morphological property of films was observed by scanning electron microscopy (SEM). Surface morphology of films shows regularly spread all of zinc oxide films. The optical property of various zinc oxide films was measured using UV-Visible spectrophotometer.
      1