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    Wyświetlanie 1-8 z 8
    Tytuł:
    Effect of Time Immersion of Thiourea on Structural and Optical Properties of CdS Deposited by SILAR
    Autorzy:
    Raid, A. Ismail
    Nadir, F. Habubi
    Kameran, Y. Qader
    Powiązania:
    https://bibliotekanauki.pl/articles/1178249.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CdS
    Optical Properties
    SILAR
    Opis:
    Successive ionic layer adsorption and reaction (SILAR) technique was used to prepare (CdS) thin films on glass substrate, by changing the immersion time in thiourea solution. XRD patterns proved that the as deposited thin films were polycrystalline structure with an average crystallite size ranging from 14.1 nm to 5.6 nm depending on immersion time. The EDX confirm the existence of CdS. Scanning electron microscopy reveals that the deposited films have a nanorod structure.Atomic force microscopy has shown that the values of average roughness and the root mean square roughness increase upon increasing the immersion time. The transmittance spectra reveal that as the immersion time increase, the value of transmittance decrease.
    Źródło:
    World Scientific News; 2018, 91; 73-85
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical and Dielectrical Properties of (PEG-CMC) Films Prepared by Drop Casting Method
    Autorzy:
    Abdali, O. Karrar
    Abdulazeez, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192693.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Optical Properties
    Energy Gap
    PEG and CMC
    Opis:
    Films of PEG after and before doped by carboxymethyle cellulose CMC were deposed on glass substrates by drop casting method. The absorbance and transmittance spectra have been recorded for all the deposited films in order to study the optical constants such as, refractive index, extinction coefficient, optical conductivity, real and imaginary parts of the dielectric constant, these additives effect all the parameters under study and enhance their value especially the optical absorption. The values of absorption coefficient refer to allowed direct transition.
    Źródło:
    World Scientific News; 2016, 46; 189-203
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optical Properties of Polyvinyl Chloride Doped with DCM dye Thin Films
    Autorzy:
    Mohamed, Ahmed Namah
    Tuhaiwer, Akeel Shaker
    Razzaq, Zaid Saud
    Powiązania:
    https://bibliotekanauki.pl/articles/1192703.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    DCM
    optical properties
    polyvinyl chloride
    thin films
    Opis:
    Optical properties such as absorption coefficients, refractive indices, and extinction coefficients of pure polyvinyl-chloride (PVC) and DCM laser dye doped with PVC thin films where prepared using casting method have been determined in the range between 190-1100nm. Measurement have been performed in pure and doped (PVC). The direct electronic transition and indirect energy gaps were calculated using the behaver of absorption coefficient with wavelength. The direct energy gap was 3.9e.V for pure PVC and 2e.V for doped PVC, but indirect energy gap was 2.4e.V for pure PVC and 1.1e.V for doped. The phonon energy was 1.05e.V for pure PVC and was 0.55e.V for DCM doped with PVC thin film.
    Źródło:
    World Scientific News; 2016, 30; 45-56
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CdO thin films Grown by Chemical Spray Pyrolysis and Effect of Substrate type on its Optical Properties
    Autorzy:
    Abood, Mohmood Muwafaq
    Jabbar, Wasmaa Abdulsattar
    Daroysh, Hassan Hadi
    Qader, Kameran Yasseen
    Al-Baidhany, Ismaeel A.
    Hussin, Hadi Ahmed
    Jasim, Marwah Nasif
    Powiązania:
    https://bibliotekanauki.pl/articles/1194135.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CdO
    Optical properties
    Thin Film
    energy gap
    Opis:
    Cadmium oxide (CdO) thin films were formed by chemical spray pyrolysis technique for different substrate type (glass, quartz, ITO). Absorption spectra were recorded from UV-Visible spectrophotometer in the range of 300-900 nm. The absorbance increased when the glass substrate replaced to quartz or ITO substrate, also this behavior for absorption coefficient and extinction coefficient. While the refractive index tack unstable behavior. The energy gap decreased from 2.4 eV for CdO thin film deposited on glass substrate to 2.36 eV for CdO thin film deposited on ITO substrate.
    Źródło:
    World Scientific News; 2016, 57; 41-47
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of Cu alloy on auxiliary and invisible options of splash kept CdS slims
    Autorzy:
    Kadhim, Mohammed A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1188099.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    CdS
    spray pyrolysis
    optical properties
    Cu concentration
    Opis:
    Cadmium Sulfide and copper alloyed Cd1-xS Cux slims have been set up by the spray pyrolysis technique. The optical gap crevices at unadulterated and doped Cadmium Sulfide were observed to be shifted from (2.34 to 2.45) eV with increment x from (0 to 0.1). The X-beam diffraction (XRD) investigation uncovered that slims were polycrystalline and showed two phases cubic and hexagonal structure with increasing the hexagonal phase with increment Cu ratio.
    Źródło:
    World Scientific News; 2016, 56; 217-228
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of structural, optical and antibacterial effect of copper nanoparticles synthesis by photoreduction
    Autorzy:
    Hilal, Zahraa Hadi
    Wahab, Farah Lateef
    Hila, Israa Hadi
    Powiązania:
    https://bibliotekanauki.pl/articles/1191426.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Nanocopper
    photo reduction
    optical properties
    Antibacterial effect
    Opis:
    The copper nanoparticles films has been prepared via the reduction of copper salts CuSO4•5H2O by UV-lamps. The irradiation time changed from 15 min. to one hour effects on the morphology of dispersed copper nanoparticles were studied. The structure properties of the films were determined by X-ray diffraction, the change on the surface morphology was observed using atomic force microscope (AFM). Finally, The optical transmission of thin films was measured by UV-VIS spectrometer, during the preparation of observed that the color of dispersion gradually changed from blue coloration, brown finally dark brown by changing with irradiation time .As well as studies the biochemical and antibacterial effect of nano colloid studying by using Pseudomonas aeruginosa, Bacillus subtitis, Escherichia coli and Klebsiella phenmoniae. The copper nanoparticles is increasing its antibacterial activities. Actions of copper nanoparticles synthesized in both above method was also observed against both gram (-) and gram (+) bacteria.
    Źródło:
    World Scientific News; 2016, 40; 1-11
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of molarity on the structural and optical properties of ZnO thin films deposit by CSP
    Autorzy:
    Habubi, Nadir F.
    Abood, Ziad M.
    Algamel, Ahmed N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193915.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Urbach energy
    ZnO
    ZnO thin films
    optical properties
    structural properties
    Opis:
    ZnO thin films have been prepared by chemical spray pyrolysis technique CSP). XRD pattern reveals that the preferred orientation was varied with concentration, topography analysis was done by AFM micrograph which confirm the existence of nonstructural films. The optical properties was done by recorded the transmittane and absorbance which were affected by an increase in concentration. The values of optical energy gap obtained from Tauc relation were 3.17, 3.18 and 3.19 eV for 0.05, 0.1 and 0.5 M respectively. Urbach energy confirms the decrease in band tail as the concentration increase.
    Źródło:
    World Scientific News; 2015, 22; 55-69
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Optical and Surface Morphology Properties of AgInTe2
    Autorzy:
    Khudayer, Iman H.
    Abaas, Marwan R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1177914.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    AgInTe2 thin films
    Optical properties
    Thermal evaporation
    transmission
    Opis:
    AgInTe2 (AIT) thin films prepared by using vacuum thermal evaporation technique, of thickness 150 nm, with deposition rate 1.8±0.2 nm/sec on glass of substrate with pressure (10-5) mbar and at room temperature. In the range 473-673 K all samples has been heat treatment. The AIT properties of optical thin films would been studied like (coefficient of absorption, index of refractive, coefficient of extinction, real and imaginary dielectric constant) by using Measurement spectra of absorption and transmission. Results of the optical constants showed that it is wide applications as an photovoltaic applications and optoelectronic devices.
    Źródło:
    World Scientific News; 2018, 97; 99-112
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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