Abstract
In this paper the ZnO thin films, which has used spotlight of next generation short wavelength LEDs and semiconductor laser were deposited based on RF magnetron sputtering is described. The temperature at substrate and work pressure, which has implemented in sputtering process of ZnO thin films were settle down at <TEX>$100^{\circ}C$</TEX> and 15 mTorr respectively. The ZnO 5N has used target. The thickness of ZnO thin films was about <TEX>$1.6{\mu}m$</TEX> which was measured by SEM analysis after the sputtering process. Structural properties of ZnO thin films by in-situ and atmosphere annealing were analyzed by XRD. Transformation of grain size and surface roughness were observed by AFM. XPS spectra showed that ZnO thin film had a peak positions corresponding to the <TEX>$Zn_{2p}$</TEX> and the <TEX>$O_{1s}$</TEX>. As form above XPS, we confirmed that post-annealing condition changed the atom ratio of Zn/O and microstructure in ZnO thin films.
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