hazem95

أ. د/ حازم محمود المشنب

استاذ - عميد كلية العلوم بسوهاج

كلية العلوم

العنوان: جامعة سوهاج - كلية العلوم - قسم الفيزياء

23

إعجاب
2019 | الكلمات المفتاحية MoO3−x thin films, thermal evaporation, gas sensor,
Promising molybdenum trioxide films for optically detectable gas sensor and solar cell applications
Abstract Sub-stoichiometric molybdenum trioxide (MoO3−x) thin films were grown by thermal evaporation techniques on glass, single crystal silicon Si and Fluorine doped Tin Oxide (FTO) glass substrates with different thicknesses. It was found that, Oxygen vacancies play an important role on properties of MoO3−x films. The structural properties of these films were analyzed by means of x-ray diffraction, energy dispersive ... إقراء المزيد

2018 | الكلمات المفتاحية CdTe solar cell,
Theoretical study of  ZnS/CdS bi-layer for thin-film CdTe solar cell
The performance of CdTe solar cells is strongly limited by the thickness of CdS window layer. A higher short-circuit current density might be achieved by decreasing the thickness of CdS layer as a result of reducing the absorption losses that take place in this layer. However, it is difficult to obtain uniform and pin-hole free CdS layers thinner than 50 ... إقراء المزيد

2018 | الكلمات المفتاحية structural, morphological and,
Effect of the synthesis conditions on the structural, morphological and optical properties of Bi2Te2.7Se3 nanoparticles
Beside their promising utility as thermoelectric generators, Bi2Te3 and related compounds have several applications in electronic and optoelectronic devices. In this work, Bi2Te2.7Se0.3 nanoparticles (NPs) were successfully prepared via physical vapor deposition technique at different conditions of flow rate and temperature. The x-ray diffraction patterns show that, the NPs crystallize in a rhombohedral crystal structure with preferable growth along the ... إقراء المزيد

2017 | الكلمات المفتاحية Optical and photocatalytic,
Optical and photocatalytic properties of sol gel nano particles Co:TiO2 thin films
ABSTRACT Co-TiO2 nanoparticle thin films were synthesized by sol-gel method. The structural properties of the synthesized sample were studied using FTIR, XRD, and TEM. XRD confirmed the presence of double-phase anatase/rutile for the TiO2 nanoparticles. Effect of annealing temperature and exposure to microwave energy on the optical properties were studied for transparent conductive oxide (TCO) application. The optical energy gap ... إقراء المزيد

2008 | الكلمات المفتاحية The DC conductivity,
Investigation of the structural, optical and electrical transport properties of n-doped CdSe thin films
ABSTRACT THIN FILMS OF (CDSE)90(IN2O3)10, (CDSE)90(SNO2)10 AND (CDSE)90(ZNO)10 HAVE BEEN GROWN ON GLASS SUBSTRATES BY THE ELECTRON BEAM EVAPORATION TECHNIQUE. IT HAS BEEN FOUND THAT UNDOPED AND SN OR IN DOPED CDSE FILMS HAVE TWO DIRECT TRANSITIONS CORRESPONDING TO THE ENERGY GAPS EG AND EG + DUE TO SPIN–ORBIT SPLITTING OF THE VALENCE BAND. THE ELECTRICAL RESISTIVITY FOR N-DOPED CDSE ... إقراء المزيد

2007 | الكلمات المفتاحية Optical energy gap, Transmittance;, Structure properties,
Properties of transparent conducting oxides formed from CdO alloyed with In2O3
Abstract The structure, optical and electrical properties of transparent conducting oxide films depend greatly on the methods of preparation, heat treatment, type and level of dopant. Thin films of (CdO)1−x(In2O3)x have been grown by electron beam evaporation technique for different concentrations of In2O3 (x=0, 0.05, 0.1, 0.15 and 0.2). Increase of doping led to increased carrier concentration as derived from ... إقراء المزيد

2006 | الكلمات المفتاحية Transparent conducting oxides,
Transparent conducting ZnO-CdO thin films deposited by e-beam evaporation technique
ABSTRACT. THIN FILMS OF ZN1−X CDXO WITH X = 0, 0.1, 0.2, 0.3, 0.4 AND 0.5 AT.% WERE DEPOSITED BY ELECTRONBEAM EVAPORATION TECHNIQUE. IT HAS BEEN FOUND THAT, FOR AS-DEPOSITED FILMS, BOTH THE TRANSMITTANCE AND ELECTRICAL RESISTIVITY DECREASED WITH INCREASING THE CD CONTENT. TO IMPROVE THE OPTICAL AND ELECTRICAL PROPERTIES OF THESE FILMS, THE EFFECT OF ANNEALING TEMPERATURE AND TIME ... إقراء المزيد

2006 | الكلمات المفتاحية Optical properties of specific,
Optimization of the optical and electrical properties of electron beam evaporated aluminum-doped zinc oxide films for opto-electronic applications
ABSTRACT ALUMINUM-DOPED ZINC OXIDE (AZO) THIN FILMS HAVE BEEN DEPOSITED BY ELECTRON BEAM EVAPORATION TECHNIQUE ON GLASS SUBSTRATES. THE STRUCTURAL, ELECTRICAL AND OPTICAL PROPERTIES OF AZO FILMS HAVE BEEN INVESTIGATED AS A FUNCTION OF ANNEALING TEMPERATURE. IT WAS OBSERVED THAT THE OPTICAL PROPERTIES SUCH AS TRANSMITTANCE, REFLECTANCE, OPTICAL BAND GAP AND REFRACTIVE INDEX OF AZO FILMS WERE STRONGLY AFFECTED BY ... إقراء المزيد

2005 | الكلمات المفتاحية Optical properties of specific,
Enhancement of the optical and electrical properties of ITO thin films deposited by electron beam evaporation technique
Abstract. Indium tin oxide (ITO) is widely utilized in numerous industrial applications due to its unique combined properties of transparency to visible light and electrical conductivity. ITO films were deposited on glass substrates by an electron beam evaporation technique at room temperature from bulk samples, with different thicknesses. The film with 1500 ˚A thick was selected to perform annealing in ... إقراء المزيد

2005 | الكلمات المفتاحية Thin film structure and morpho,
Effect of annealing and In content on the properties of electron beam evaporated ZnO films
ABSTRACT. THE EFFECT OF BOTH ANNEALING AND IN CONTENT ON THE PROPERTIES OF ZNO FILMS PREAPARED BY ELECTRON BEAM EVAPORATION WERE INVESTIGATED. THE EVAPORATION WAS CARRIED OUT AT ROOM TEMPERATURE FROM BULK SAMPLES PREPARED BY SINTERING TECHNIQUE. X-RAY DIFFRACTION SHOWED THAT THE STRUCTURE OF ZNO-IN2O3 FILMS DEPENDS ON BOTH THE IN CONTENT AND ANNEALING TEMPERATURE. AMORPHOUS, HIGHLY TRANSPARENT AND RELATIVELY ... إقراء المزيد