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Full-Text Articles in Physics
3d Self-Assemble Formation Of Molybdenum Disulfide (Mos2)-Doped Polyacrylamide (Paam) Composite Hydrogels, Sümeyye Durmaz, Ekrem Yildiz, Bengü Özuğur Uysal, Mehmet Önder Pekcan
3d Self-Assemble Formation Of Molybdenum Disulfide (Mos2)-Doped Polyacrylamide (Paam) Composite Hydrogels, Sümeyye Durmaz, Ekrem Yildiz, Bengü Özuğur Uysal, Mehmet Önder Pekcan
Turkish Journal of Physics
Polyacrylamide (PAAm), a renowned member of the hydrogel class, has many uses throughout a wide range of industrial processes, including water absorbed diapers, contact lenses, wastewater treatment, biomedical applications such as drug delivery vehicles and tissue engineering because of its physical stability, durability, flexibility easier shaping, and so on. PAAm also provides new functionalities after the incorporation of inorganic structures such as molybdenum disulfide (MoS2). During the copolymerization process, the transmittance of all samples reduced significantly after a particular time, referred to as the gel point. Microgels form a tree above the gel point as projected by Flory-Stockmayer …
Elaboration And Study Of Structural And Optical Properties Of Aubr Nanocrystalsdispersed In Kbr Single Crystals, Hanane Zaioune, Fouzia Zehani, Noureddine Boutaoui, Badis Khennaoui
Elaboration And Study Of Structural And Optical Properties Of Aubr Nanocrystalsdispersed In Kbr Single Crystals, Hanane Zaioune, Fouzia Zehani, Noureddine Boutaoui, Badis Khennaoui
Turkish Journal of Physics
The structural and optical properties of the AuBr nanocrystals embedded in the KBr single crystals grown by the Czochralski method were studied using several techniques. The X-ray diffraction reveals their formation and incorporation. The crystallite average radii calculated from XRD using the Scherrer's formula was found to vary between 19 and 39 nm. The photoluminescence spectra obtained on these same samples present an emission band located at 1.91 eV (650 nm), which can be attributed to the orange luminescence of AuBr nanocrystals. However, the photoluminescence excitation measurements of these nanocrystals exhibit an excitation band located at 3.44 eV (360 nm), …
Properties Of Pbs Thin Films Grown On Glass And Layered Gase Crystal Substrates By Chemical Bath Deposition, Mevlüt Karabulut, Hüseyi̇n Ertap, Hasan Mammadov, Güventürk Uğurlu, Mustafa Kemal Öztürk
Properties Of Pbs Thin Films Grown On Glass And Layered Gase Crystal Substrates By Chemical Bath Deposition, Mevlüt Karabulut, Hüseyi̇n Ertap, Hasan Mammadov, Güventürk Uğurlu, Mustafa Kemal Öztürk
Turkish Journal of Physics
PbS thin films were grown on glass and GaSe crystal substrates by chemical bath deposition and their structural, morphological, optical, and electrical properties were investigated. PbS films grew in cubic structure with lattice constants equal to 5.9315 Å and 5.9362 Å for films grown on glass and GaSe crystal, respectively. The band gaps of the PbS films were determined to be 1.60 eV. The long wavelength tails of absorption spectra showed exponential dependence on the incident photon energy according to the Urbach-Martiensen model. Electrical properties of PbS films were investigated by the van der Pauw method, which showed that PbS …
Influence Of Composition On The Structure And Optoelectronic Properties Of Pb_Xin_{25-X}Se_{75} Thin Films, Hesham Azmi Elmeleegi, Zeinab El Sayed El Mandouh, Ahmed Abdel Moez
Influence Of Composition On The Structure And Optoelectronic Properties Of Pb_Xin_{25-X}Se_{75} Thin Films, Hesham Azmi Elmeleegi, Zeinab El Sayed El Mandouh, Ahmed Abdel Moez
Turkish Journal of Physics
Pb_xIn_{25-x}Se_{75} thin films with 2 compositions were prepared by thermal evaporation. The surface topography of these films was studied by transmission electron microscope. The optical reflectance and transmittance were studied in order to determine the optical parameters such as optical energy gap, refractive index, extinction coefficient, dielectric loss, and dielectric tangent loss for these films. A single oscillator theory equation was applied for these films in order to determine both dispersion energy and oscillating energy, and the ratio of free carrier concentration/effective mass (N/m*) was determined optically. It was found that change in the composition of these films affects strongly …
Morphological And Optical Properties Of Vacuum Evaporated Zno Thin Films, Farzana Chowdhury, S. M. Firoz Hasan, M. Sahabul Alam
Morphological And Optical Properties Of Vacuum Evaporated Zno Thin Films, Farzana Chowdhury, S. M. Firoz Hasan, M. Sahabul Alam
Turkish Journal of Physics
ZnO thin films were deposited onto chemically and ultrasonically cleaned glass substrates by thermal evaporation in vacuum (\sim 10^{-6} mbar). The thickness of the films was measured by frequency shift of quartz crystal. The optical properties of the films have been ascertained by UV-VIS-NIR spectrophotometry in the photon wavelength range of 300--2500 nm. The effect of substrate temperature on the optical properties of the films has been investigated, where all film thickness was kept fixed at 100 \pm 10 nm. The optical transmittance spectra reveal a maximum transmittance of 88% at room temperature around photon wavelength of 2350 nm. Band …
Hydrogen Implantation Effects On The Electrical And Optical Properties Of Inse Thin Films, Atef Fayez Qasrawi, Khaled Faisal Ilaiwi, Antonio Polimeni
Hydrogen Implantation Effects On The Electrical And Optical Properties Of Inse Thin Films, Atef Fayez Qasrawi, Khaled Faisal Ilaiwi, Antonio Polimeni
Turkish Journal of Physics
The effects of hydrogen ion implantation on the structural, electrical and optical properties of amorphous InSe thin films have been investigated. X-ray diffraction analysis revealed no change in the structure of the films. An implantation of 7.3 x 10^{18} ions/cm^2 decreased the electrical conductivity by three orders of magnitude at 300 K. Similarly, the conductivity activation energy, which was calculated in the temperature range of 300-420 K, decreased from 210 to 78 meV by H-ion implantation. The optical measurements showed that the direct allowed transitions energy band gap of amorphous InSe films has decreased from 1.50 to 0.97 eV by …
Chemical Bath Deposition And Characterization Of Cu_2o-Cu_Xs Thin Films, D. D. O. Eya
Chemical Bath Deposition And Characterization Of Cu_2o-Cu_Xs Thin Films, D. D. O. Eya
Turkish Journal of Physics
Cu_2O-Cu_xS thin films have been deposited on glass substrate by chemical bath deposition technique. The films were obtained by depositing Copper Sulphide (Cu_xS) on Copper (I) Oxide (Cu_2O) and then Cu_2O on Cu_xS. The peak solar transmittance across the thin films were found to be
Structure And Optical Properties Of Cuals_2 Thin Films Prepared Via Chemical Bath Deposition, Tariq Alwan, Mushtak Jabbar
Structure And Optical Properties Of Cuals_2 Thin Films Prepared Via Chemical Bath Deposition, Tariq Alwan, Mushtak Jabbar
Turkish Journal of Physics
CuAlS_2 thin films of thicknesses 118 \pm 5 nm were deposited on glass substrates using chemical bath deposition technique. The details of the preparation method are well described. The method is relatively simple and is easily controlled and sufficient to produce large area and good adherence to the substrate films. Effect of annealing temperature T_a on the structure, and optical properties of CuAlS_2 films were investigated. The structures of the films were studied by X-ray diffraction and FTIR spectrophotometer. The optical properties of the films were ascertained by UV-VIS spectrophotometer (wavelengths ranging between 300 and 900 nm). The optical transmittance …
Role Of Substrate Temperature On The Structural And Morphological Properties Of Zno Thin Films Deposited By Ultrasonic Spray Pyrolysis, Abdelkader Djelloul, Khadidja Bouzid, Fahima Guerrab
Role Of Substrate Temperature On The Structural And Morphological Properties Of Zno Thin Films Deposited By Ultrasonic Spray Pyrolysis, Abdelkader Djelloul, Khadidja Bouzid, Fahima Guerrab
Turkish Journal of Physics
Zinc oxide (ZnO) thin films have been prepared by ultrasonic Spray Pyrolysis (USP) technique using zinc acetate dihydrate dissolved in methanol, ethanol and deionized water. A thermodynamic analysis for the growth of ZnO thin films from zinc acetate and water vapor has been made. The evolution of the preferred crystalline orientations in the ZnO films was investigated systematically. The optical measurements reveal that films have a maximum transmittance of about 90% and a direct band gap of 3.26 eV.
Optical And Structural Properties Of The Gas_Xse_{1-X}, Gase, Tlgase_2 And Tlins_2 Semiconductors, Aydin Ulubey Kulibekov
Optical And Structural Properties Of The Gas_Xse_{1-X}, Gase, Tlgase_2 And Tlins_2 Semiconductors, Aydin Ulubey Kulibekov
Turkish Journal of Physics
In the present work, crystal structure and optical properties of the layered chalcogenides GaS_xSe_{1-x}, GaSe, TlGaSe_2 and TlInS_2 were investigated in the visible (VIS) and infrared (IR) range of spectra. Partial content of the elements were performed and the space group were determined by help of X-ray diffraction experiments. Making use of the experimental results, we have constructed a scheme of band motion for the transition from GaSe to GaS. It has been established that that the infrared active optical modes show typical two-mode behaviour. DOI: 10.1007/s10762-005-0294-3, 10.1063/1.2128694
Preparation And Study Of The Structural, Optical And Electrical Properties Of Cu(In,Ga)Se_2 Thin Films, Athar Javed
Preparation And Study Of The Structural, Optical And Electrical Properties Of Cu(In,Ga)Se_2 Thin Films, Athar Javed
Turkish Journal of Physics
Thin film samples of Cu(In,Ga)Se_2 (CIGS) were prepared at room temperature by physical vapor deposition (PVD) technique using resistive heating method onto soda lime glass substrates. Deposition conditions were same for all the samples. The prepared samples were annealed in vacuum at temperature of 200 °C for 5, 10, 15, 30 and 60 minutes and were characterized structurally, optically and electrically. The structural analysis indicate the partial formation of quaternary CIGS compounds for the samples which were annealed in vacuum at 200 °C for 30 and 60 minutes. XRD analysis indicate that there is a continuous growth and improvement in …
Design And Preparation Of Antireflection And Reflection Optical Coatings, Özlem Duyar, H. Zafer Durusoy
Design And Preparation Of Antireflection And Reflection Optical Coatings, Özlem Duyar, H. Zafer Durusoy
Turkish Journal of Physics
In this study, reflective and antireflective coatings were designed and simulated. Optical transmission and reflection values were deduced with a matrix formulation via a personal computer. It was found that the number of layers affects the optical performance. The width of the high-reflectance region in the reflectance curves decreases, while its height increases with the increasing number of layers for the reflective coating design. The antireflection coatings transmit about 99.89% in a broad high-pass band at the central wavelength of \lambda_{0} = 450 nm. In addition, simulated Fabry-Perot filters result in a single sharp transmittance peak at the desired central …