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K. Kim, et al., “Realization of p-Type ZnO Thin Films,” Applied Physics Letters, Vol. 83, No. 1, 2003, pp. 63-65. doi:10.1063/1.1591064

has been cited by the following article:

  • TITLE: Synthesis Sol-Gel Derived Highly Transparent ZnO Thin Films for Optoelectronic Applications

    AUTHORS: Wasan R. Saleh, Nada M. Saeed, Wesam A. Twej, Mohammed Alwan

    KEYWORDS: ZnO Thin Film; Sol-Gel; Dip and Spin Coating Technique

    JOURNAL NAME: Advances in Materials Physics and Chemistry, Vol.2 No.1, March 19, 2012

    ABSTRACT: In this work, ZnO thin films were derived by sol-gel using two different techniques; dip coating and spin coating technique. The films were deposited onto glass substrate at room temperature using sol-gel composed from zinc acetate dehydrate, monoethanolamine, isopropanole, and de-ionized water, the films were preheated at 225?C for 15 min. The crystallographic structures of ZnO films were investigated using X-ray diffraction (XRD); the result shows that the good film was prepared at dip coating technique, it was polycrystalline and highly c-orientation along (002) plane, the lattice constant ratio (c/a) was calculated at (002), it was about 1.56. The structure of thin films, prepared by spin coating technique, was amorphous with low intensity and wide peaks. The optical properties of the prepared film were studied using UV-VIS spectrophotometer with the range 190 - 850 nm, and by using the fluorescence spectrometer. The optical characterization of ZnO thin films that were prepared by the dip coating method have good transmittance of about 92% in the visible region, it can be noted from the fluorescence spectrometer two broad visible emission bands centered at 380nm and 430 nm. The optical energy gaps for the direct and indirect allowed transitions were calculated, the values were equal 3.2 eV and 3.1 eV respectively. Dip coating technique create ZnO films with potential for application as transparent electrodes in optoelectronic devices such as solar cell.