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    CuO nanostructures grown by the SILAR method: Influence of Pb-doping on the morphological, structural and optical properties
    (Elsevier Science Sa, 2015) Bayansal, F.; Gulen, Y.; Sahin, B.; Kahraman, S.; Cetinkara, H. A.
    CuO nanostructures with and without Pb were synthesized by the Successive Ionic Layer Adsorption and Reaction method. The films were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction and ultraviolet-visible spectrophotometry. Scanning electron microscopy results showed that the morphology of the film surface was changed from plate-like to coral-like nanostructures with increasing Pb concentration. The X-ray diffraction patterns showed the monoclinic crystal structure with preferential planes of ((1) over bar 11) and (111). Furthermore, ultraviolet-visible spectra showed that the band gap of the films was tailored by Pb doping. (C) 2014 Elsevier B.V. All rights reserved.
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    Fabrication and characterization of Mn-doped CuO thin films by the SILAR method
    (Elsevier Sci Ltd, 2013) Gulen, Y.; Bayansal, F.; Sahin, B.; Cetinkara, H. A.; Guder, H. S.
    Thin films of un-doped and Mn-doped CuO nanostructures have been deposited on glass substrates via the SILAR method. The morphological, compositional, structural and optical properties of the films have been investigated by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction analysis and UV vis spectrophotometry. The analyzed results indicate that the obtained films consist of plate-like nanostructures. From the EDS analysis it is seen that Mn-doping concentration affects the shapes of the nanostructures. XRD results show that all of the films have monoclinic structure. From the room temperature UV-viS analysis it is found that the optical band gap of the films increases with increasing Mn-doping concentrations. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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    Solution-phase synthesis of un-doped and Pb doped CdO films
    (Academic Press Ltd- Elsevier Science Ltd, 2014) Gulen, Y.; Sahin, B.; Bayansal, F.; Cetinkara, H. A.
    In this work, un-doped and Pb doped cadmium oxide (CdO) films were prepared for the first time on glass substrates by successive ionic layer adsorption and reaction (SILAR) technique. The crystal structure parameters such as average crystallite size and dislocation density were calculated from X-ray diffraction analysis. XRD analysis showed that the films have poly-crystalline structures with decent crystallinity levels. Surface morphology was found to be modified with various Pb doping concentrations. The diameters of the nanoparticles were calculated from the SEM. The optical properties of the prepared CdO films were characterized by ultraviolet-visible spectrophotometer. With the increase in Pb concantration from 0.5% to 2.5%, the optical absorption edge shifted towards shorter wavelengths which might be attributed to change in crystallite size. (C) 2014 Elsevier Ltd. All rights reserved.
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    Structural and optical properties of Ba-doped CdO films prepared by SILAR method
    (Academic Press Ltd- Elsevier Science Ltd, 2014) Sahin, B.; Gulen, Y.; Bayansal, F.; Cetinkara, H. A.; Guder, H. S.
    Nanostructure materials have opened a new discussion in the field of semiconductor device technology because material properties could be changed by changing the crystal morphology and size. In this article, Ba doped CdO films were prepared by SILAR method. The crystal morphology, structure and optical properties of the films were characterized by scanning electron microscopy, X-ray diffraction and ultraviolet-visible spectroscopy, respectively. From the SEM analysis it is seen that Ba-doping concentration affects the shapes of the nanostructures. XRD analysis showed that the films have poly-crystalline structures. The room temperature UV-vis analysis showed that the optical band gap of the CdO films was firstly decreased then increased with the increasing barium doping concentration. (C) 2013 Elsevier Ltd. All rights reserved.