HYDROTHERMAL SYNTHESIS of ZnO FILMS and CHARACTERIZATION

Authors : Olcay Gençyılmaz

Pages : 660-669

Doi:10.18038/aubtda.267254

View : 16 | Download : 8

Publication Date : 2016-12-01

Article Type : Research Paper

Abstract :In this study, ZnO films were produced by hydrothermal synthesis onto glass substrates. The structural properties of ZnO films were examined using X-ray diffraction insert ignore into journalissuearticles values(XRD); techniques. According to XRD results, the high quality polycrystalline ZnO films were achieved at low temperature. Spectroscopic ellipsometry insert ignore into journalissuearticles values(SE); technique and Cauchy-Urbach model were used to the important optic constants of films as the thickness insert ignore into journalissuearticles values( d );, refractive index insert ignore into journalissuearticles values( n ); and extinction coefficient insert ignore into journalissuearticles values( k );. The transmittance, absorbance and reflectance spectra of films were obtained by Uv-vis spectrophotometer and optical properties were analyzed using these spectra. Also, the surface properties, roughness and electrical resistivity values were investigated by atomic force microscopy insert ignore into journalissuearticles values(AFM);, field emission scanning electron microscopy insert ignore into journalissuearticles values(FESEM); and four-probe technique, respectively. Finally, the characterization results of ZnO films showed that, hydrothermal synthesis allowed production of ZnO films which higher quality than other techniques at low temperature.
Keywords : Hydrothermal synthesis, ZnO films, XRD, Optic constants