Thiwawong, Thutiyaporn
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Thiwawong, Thutiyaporn
Alternative Name
Thiwawong, T.
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thutiyaporn.th@kmitl.ac.th
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Item type:Publication, Properties of CuPc/Se organics-inorganic hybrid thin films growth by electron beam evaporation technique(2007-12-01); ; Organic and Inorganic materials with copper (II) phthalocyanine (CuPc) and selenium (Se) were deposited to implement hybrid thin Alms by multi pocket electron beam evaporation technique. Crystallization of hybrid films was performed by x-ray diffraction (XRD) spectroscopy. XRD pattern exhibits monoclinic α-phase crystallizations structure of CuPc. Influences of the CuPc thickness on the crystalline structure of selenium films were obtained. As the thickness of CuPc layer was increased to 100 nm, the hexagonal Se was observed. Optical absorption spectra were measured by UV-Visible spectrophotometer. Results of hybrid absorption spectra were revealed to absorption spectra of CuPc and Se. Surface roughness of films can confirm with XRD spectra .The surface morphology was characterized by atomic force microscope (AFM) with non-contact mode, it illustrate the point that hybrid thin films is nanocrystal structure. © 2007 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Structural and optical properties of CuPc/ZnSe multilayer hybrid thin films prepared by electron beam evaporator(2007-12-01); ; Multilayer hybrid thin films consisting of alternating layers of organic and inorganic materials were fabricated with powder of copper-phthalocyanine (CuPc) and zinc selenide (ZnSe) by electron beam evaporator. The structural and optical characterization of multilayer hybrid thin film were carried out by using X-ray diffraction (XRD), atomic force microscope (AFM) and UV-Vis absorption spectroscopy. XRD patterns show two peaks of the orientation of (200) plane monoclinic structure in CuPc material and (111) plane cubic structure in ZnSe material where pair numbers of multilayer hybrid thin film higher than two pairs. With the variation in the number of pairs of CuPc/ZnSe, AFM images present almost similar morphology but the optical absorption spectra are significantly changed. Such spectral changes can be interpreted by the effect of the aggregate size and the characteristic of the multilayer hybrid structure. © 2007 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Organic/inorganic multilayer hybrid thin films: Effect of substrate temperature(2009-09-01); New organic/inorganic multilayer hybrid thin films were prepared by electron beam evaporator between two and 10 pairs of CuPc/ZnSe alternating layers. The structural and optical characterisations of multilayer hybrid thin films were carried out using X-ray diffraction, field emission scanning electron microscopy (FE-SEM) and UV-vis absorption spectroscopy. X-ray diffraction patterns show (200) plane as monoclinic CuPc, and (111) and (220) planes as cubic ZnSe structures on the deposited films at room temperature. At the substrate temperature of 150°C, CuPc crystallisation becomes dominant and ZnSe crystallisation is subtle. Nanorod-like CuPc morphology is obtained with increasing substrate temperature. These nanorod-like crystals are arranged mainly with the stacking axis of the CuPc molecules parallel to the substrate surface and nanocrystalline of ZnSe are formed on nanorod indicated through FE-SEM images. The optical absorption spectra are broad, ranging between 420 and 900 nm at room temperature and slightly shift to longer wavelength (520-800 nm) at substrate temperature of 150°C, owing to the nanorod-like structure. The substrate temperature has a direct effect on the structural and optical properties of multilayer hybrid thin films. © W. S. Maney & Son Ltd. 2009.