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  Journal Paper


Paper Title :
Synthesis, Structural and Optical Study of ZNO Thin Films Prepared by Photo-Assisted Sol-Gel Method

Author :S. Haya, O. Halimi, M. Sebais, B. Boudine

Article Citation :S. Haya ,O. Halimi ,M. Sebais ,B. Boudine , (2017 ) " Synthesis, Structural and Optical Study of ZNO Thin Films Prepared by Photo-Assisted Sol-Gel Method " , International Journal of Mechanical and Production Engineering (IJMPE) , pp. 120-122, Volume-5,Issue-2

Abstract : ZnO thin films were prepared by UV photo-assisted sol-gel method using zinc acetate (Zn(CH 3 COO) 2 .2H 2 O) as starting material , 2-methoxyethanol as solvent and monoethanolamine (MEA) as stabilizer. Thin films are deposited onto glass substrates using dip-coating technique. After deposition and drying at 100°C, the ZnO thin films have been grown using UV irradiation. The structural characterization of films has been performed using X-ray diffraction which shows the formation and the progressive growth along direction [002] of ZnO crystallites with hexagonal structure. The FTIR spectrum reveals the presence of a peak situated at 418 cm -1 corresponding to the Zn-O stretching which confirms the ZnO formation. The optical absorption of the ZnO thin films shows a shift of the gap to higher energies. The shoulder observed on the optical absorption spectrum indicates a large size dispersion of ZnO crystallites. The photoluminescence spectrum at room temperature reveals an intense and a wide band in the visible region from 400 to 800nm. The photoluminescence emission is formed of six bands which can be associated with various defects in ZnO crystallites. Keywords : ZnO, Photo-assisted sol-gel method, XRD, IR spectroscopy, UV-Visible absorption, Photoluminescence.

Type : Research paper

Published : Volume-5,Issue-2


DOIONLINE NO - IJMPE-IRAJ-DOIONLNE-7023   View Here

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