Browsing Bildiri Koleksiyonu by Title
Now showing items 38-57 of 95
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The effects of Al doping on the optical constants of ZnO thin films prepared by spray pyrolysis method
(Springer, 2008)Aluminum doped ZnO (AZO) thin films doped with different aluminum concentrations have been prepared by spray pyrolysis method onto glass substrates. The optical and structural properties of the films have been investigated ... -
The Effects of System Interactions to the Natural Evolution of U Gem within the Context of X-Ray Data Analysis
(Astronomical Soc Pacific, 2011)In this study, we have undertaken an analysis of Chandra data of the dwarf nova type cataclysmic variable U Gem during quiescence and outburst. The data of U Gem, number 647 and 3767, which were obtained by the Chandra ... -
Electrical and optical performance of InAs / AlSb / GaSb superlattice photodetector
(TANGER Ltd., 2015)We report on electrical and optical performance of InAs/AlSb/GaSb type-II superlattice photodetectors. The detector structure is designed to operate in the MWIR domain with a cut-off wavelength of 4.3 µm at 125 K. The ... -
Electrical and optical properties of undoped and In-doped ZnO thin films
(Wiley-V C H Verlag GMBH, 2007)Transparent conducting undoped and indium-doped zinc oxide (ZnO) thin films have been deposited by the spray pyrolysis method at 350 degrees C substrate temperature. X-ray diffraction spectra of the films have shown that ... -
Electrical properties of ZnO/Au/ZnS/Au films deposited by ultrasonic spray pyrolysis
(Elsevier Science Sa, 2007)Polycrystalline ZnS semiconducting films have been prepared by ultrasonic spray pyrolysis technique in the form of planar and sandwich configurations using amorphous and ZnO coated glass substrates. Deposition of ZnS films ... -
Electro-Fenton treatment of aqueous Clopyralid solutions
(Taylor & Francis LTD, 2010)The removal of Clopyralid (CLPYD) from aqueous solutions was performed by the electro-Fenton process in which hydroxyl radicals are produced electrocatalytically and used to degrade the persistent organic pollutants. The ... -
Electrochemical investigation of the effects of V(V) and sulfuric acid concentrations on positive electrolyte for vanadium redox flow battery
(Pergamon-Elsevier Science LTD, 2016)0 In this study, the concentration effects of sulfuric acid solution and V(V) on positive electrolyte component of vanadium redox batteries were investigated by cyclic voltammetry and electrochemical impedance spectroscopy ... -
Electrodeposited SnS film for photovoltaic applications
(Pergamon-Elsevier Science LTD, 2014)SnS film has been produced by electrodeposition technique onto ITO (indium-tin-oxide) coated glass substrates using aqueous solution containing SnCl2 and Na2S2O3. The pH of the solution was adjusted to 1.8 by drop-wise ... -
Electronic and optical properties of 4.2 mu m"N" structured superlattice MWIR photodetectors
(Elsevier Science BV, 2013)We report on the development of a new structure for type II superlattice photodiodes that we call the "N" design. In this new design, we insert an electron barrier between InAs and GaSb in the growth direction. The barrier ... -
Fabrication and Optical Characterization of CdSe Thin Films Grown by Chemical Bath Deposition
(Polish Acad Sciences Inst Physics, 2015)Cadmium selenide thin films with different pH values (pH = 10, 11, 12 and 13) are produced on glass substrates at 50 degrees C for 3 h by chemical bath deposition technique. The structural, morphological and optical ... -
Frontier Orbital Theory and Chemical-Reactivity - the Utility of Spectroscopy and Molecular-Orbital Calculations
(Kluwer Academic Publ, 1993)… -
Gibbs Free Energy Assisted Passivation Layers
(Spie-Int Soc Optical Engineering, 2016)Reduction of surface leakage is a major challenge in most photodetectors that requires the elimination of surface oxides on etched mesas during passivation. Engineering the passivation requires close attention to chemical ... -
High quantum efficiency Type-II superlattice N-structure photodetectors with thin intrinsic layers
(Spie-Int Soc Optical Engineering, 2013)We report on the development of InAs/AlSb/GaSb based N-structure superlattice pin photodiode. In this new design, AlSb layer in between InAs and GaSb layers acts as an electron barrier that pushes electron and hole wave ... -
Homogeneous oxidation of alcohols in water catalyzed by a Cu(II) complex with a triphenyl acetate/ bipyridyl ligands
(American Chemical Society, 2017)… -
Hyperbolic Quaternion Formulation of Electromagnetism
(Springer Basel Ag, 2010)In this paper, after presenting the hyperbolic quaternion formalism, an alternative representational method is proposed for the formulation of classical and generalized electromagnetism in the case of the existence of ... -
I-V characterization of a staircase quantum well infrared photodetector
(Wiley-V C H Verlag GMBH, 2011)In this work, a quantum well infrared photodetector structure which consists of three different well thicknesses with three different barrier compositions producing a staircase-like conduction band profile with the reputation ... -
IFVD-based large intermixing selectivity window process for high power laser diodes
(Spie-Int Soc Optical Engineering, 2018)Catastrophic optical mirror damage (COMD) is a key issue in semiconductor lasers and it is initiated by facet heating because of optical absorption. To reduce optical absorption, the most promising method is to form ... -
In situ direct photoproduction of ketenes from substituted coumarins isolated in solid argon: The case of N-(2-oxo-2H-chromen-3-yl)acetamide
(Elsevier Science BV, 2009)In this study, the infrared spectrum of N-(2-oxo-2H-chromen-3-yl)acetamide (3-acetamidocoumarin; 3AC) isolated in solid argon, at 10 K, was obtained and assigned. In consonance with the relative energies of the three ... -
Influence of dopant concentration on the optical properties of ZnO: In films by sol-gel method
(Elsevier Science Sa, 2009)Undoped and in doped ZnO films have been deposited by sol-gel spin coating method. The effect of indium, incorporation on structural and optical properties of ZnO films has been investigated. X-ray diffraction patterns of ... -
Investigation of carbon produced by methane pulsed discharge
(Wiley-V C H Verlag GMBH, 2007)Pulsed discharges of methane gas at atmospheric pressure were generated using high voltage power supply (20 kV-25 kHz) to produce the carbon. The pulsed discharge of methane gas was generated between two sharp wolfram ...