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The organic amorphous matrix of PMMA is transparent in the ultraviolet-visible area and so it allows the study of optical properties of ZnSe nanocrystals in this field. The thin films of PMMA/ZnSe nanocomposite were prepared using a colloidal solution and were deposited by spin coating technique on glass substrate. The investigation of samples by X-ray shows diffraction peaks of ZnSe semiconductor...
A simple process is presented for the preparation of TiO2 nanoparticles by Co-precipitation method. This process is relatively cheaper and by using different variation we can control particle size and shape. TiCl4 was used as primary precursor along with Na2CO3 for synthesis of Rutile nanoparticles. Synthesis was done with and without modifier. Structural characterizations of samples were performed...
The paper deals with the hydrogenated amorphous silicon (a-Si:H) films about 300 nm in thickness prepared by using rf-PECVD with hydrogen dilution R = 10 of the silane source gas in the amorphous growth regime onto clean Corning Eagle 2000 glass substrates at different deposition temperatures ranging from 50 to 200°C. Structural and optical properties of the films were obtained from X-ray diffraction...
Titanium oxide thin films on glass substrates were prepared by resistance evaporation method under UHV conditions, with different 13, 30 and 58 nm thicknesses in room temperature. The structural and optical properties of the films were systematically examined. The nano-structure of the films were obtained using X-ray diffraction (XRD), and atomic force microscopy (AFM) and their optical properties...
The morphology and optical properties of Zn1-xMnxO films were synthesized by sol gel method using spin coating technique. Zn1-xMnxO thin films is prepared using 2-methoxyethanol solution of zinc acetate dehydrate and manganese acetate tetrahydrate. The solution is stabilized by MEA. The quantity of Mn in the sol was varied from x = 0,0.02, 0.04, 0.06 and 0.08 with annealing temperature of 600°C. Investigation...
Nanocrystallites of cadmium sulfide (CdS) thin films have been deposited by radio frequency magnetron sputtering technique. XRD and TEM diffraction patterns have confirmed the nanocrystalline cubic CdS phase formation. The intensity of XRD peaks also increases with the increase of deposition time that implies that better crystallinity takes place at higher deposition time. TEM micrographs of the films...
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