The Structural Properties of ZnO Thin Films Produced in Different Molarities by Spin Coating Method

Nalbant, Aykut; Ertek, Özlem; Okur, İbrahim

doi:10.1007/s13369-013-0547-8

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…The annealing duration has a distinct property on forming different crystal phases, e.g., a 30 min annealing process was not enough to create the willemite phase, whereas an 8 h annealing could do this. From the micrographs, it has been found that the average thicknesses of the films were about 1 μm [27,28]. In addition to that, it has been realized that raising the annealing temperature normally increases the ZnO micro/nano structure diameters and lengths to some extent.…”

Section: Discussionmentioning

confidence: 96%

“…From the micrographs it has been found that the average thicknesses of the films were about 1 μm [27,28]. In addition to that, it has been realized that raising the annealing temperature normally increases the ZnO micro/nano structure diameters and lengths to some extent.…”

Section: Sem Micrographsmentioning

confidence: 94%

“…It has been thought that the annealing duration is one of the important factors to reach the willemite phase together with the annealing temperature. In our experiments we have reached a point that the optimum annealing duration for this kind of phase stabilization process that a minimum time span of 6 h is needed (see [27,28]). After an 800 • C annealing temperature up to 1050 • C, the ZnO absorption peak did not come back which was a sign that the stable Zn 2 SiO 4 willemite phase has been created for these annealing temperatures, even though the ZnO diffraction peaks are detectable in the XRD spectra.…”

Section: Uv-vis Spectramentioning

confidence: 99%

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The Effects of Thermal Annealing on ZnO Thin Films Produced by Spin-Coating Method on Quartz Substrates

Ertek

Okur

2015

Int J Thermophys

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In this work, zinc oxide (ZnO) thin films on quartz substrates were fabricated using the spin-coating method. Thermal annealings from 350 • C to 1050 • C have been performed in 50 • C increments and for two annealing durations (0.5 h and 8 h). X-ray diffraction (XRD) spectra, scanning electron microscopy micrographs, and UV-Vis absorption spectra of all the samples have been elucidated from mechanical and optical points of view. It has been observed that for all annealing temperatures, the crystal phase has been obtained. After 850 • C annealings, a new crystal phase related to Zn 2 SiO 4 (willemite) has also been appeared in XRD spectra. This phase remained stable up to 1050 • C annealing together with the ZnO crystal phase. It has been found that the nano/micro rod diameters of the ZnO crystals reach to a maximum (0.4 μm) at the 700 • C annealing for both annealing durations. For 650 • C annealings, ZnO nanorods appeared to be split into two homogeneous nanorods of length of 500 μm and of width of 0.35 μm (350 nm) which was not the case for all other annealing temperatures. After 950 • C annealings, ZnO nano/micro rods started to disappear and formed homogeneous ZnO thin films.