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Chang Chun Chen,Nan Ye,ChuanFu YU,Ting FAN 한양대학교 세라믹연구소 2014 Journal of Ceramic Processing Research Vol.15 No.2
ZnO nanorods were grown on glass substrates coated by an Al-doped ZnO seed layer via a simple solvothermal method using zinc acetate dihydrate (Zn(CH3COO)2 • 2H2O) and Hexamethylenetetramine (C6H12N4) reagent. The structure, morphology and optical properties of these ZnO nanorods dependence on the molar ratio of Zn(CH3COO)2 • 2H2O to C6H12N4 were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Ultraviolet and Visible Spectrophotometry (UV-vis) and photoluminescence (PL) spectrometry, respectively. The XRD patterns indicated that all the ZnO nanorods were well-faceted hexagonal structures and preferentially grown along the c-axis. As the molar ratio of Zn(CH3COO)2 • 2H2O to C6H12N4 decreasing from 2.5 to 0.25, the crystallinity of ZnO nanorods synthesized gradually became inferior and the width of ZnO nanorods also decreased. The blue-shifts of UV emission excited from ZnO nanorods probably arised from the decreased size of ZnO nanorods.