h.abdelhafez

حسين عبد الحافظ الزناتي

استاذ - رئيس قسم الفيزياء

كلية العلوم

العنوان: قسم الفيزياء، كلية العلوم بسوهاج

9

إعجاب
8 9 6 30 4 9 672 42
108

أضيف حديثا
  • المقررات الدراسية 8
  • ملحقات المقررات الدراسية 9
  • واجبات المقررات الدراسية 6
  • المنشورات و المؤلفات 30
  • ساعات مكتبية 4
  • الاعلانات 9
  • عدد الملفات المرفوعه 18
  • كل التنزيلات 11

Optical and Electrical Properties of Tin-Doped Cadmium Oxide Films Prepared by Electron Beam Technique

2009 | الكلمات المفتاحية thin-films, Tin-Doped Cadmium Oxide, optical properties, electrical properties, Structural properties,
Optical and Electrical Properties of Tin-Doped Cadmium Oxide Films Prepared by Electron Beam Technique
Tin-doped cadmium oxide films were deposited by electron beam evaporation technique. The structural, optical and electrical properties of the films were characterized. The X-ray diffraction (XRD) study reveals that the films are polycrystalline in nature. As composition and structure change due to the dopant ratio and annealing temperature, the carrier concentration was varied around 1020 cm3, and the mobility increased ... إقراء المزيد

Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

2008 | الكلمات المفتاحية Thin films, ITO, CdO, buffer layer, electron beam, optoelectronic properties,
Characterization of ITO/CdO/glass thin films evaporated by electron beam technique
A thin buffer layer of cadmium oxide (CdO) was used to enhance the optical and electrical properties of indium tin oxide (ITO) films prepared by an electron-beam evaporation technique. The effects of the thickness and heat treatment of the CdO layer on the structural, optical and electrical properties of ITO films were carried out. It was found that the CdO ... إقراء المزيد

Properties of transparent conducting oxides formed from CdO alloyed with In2O3

2007 | الكلمات المفتاحية Structure properties; Transmittance; Opt,
Properties of transparent conducting oxides formed from CdO alloyed with In2O3
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 optical ... إقراء المزيد

The effect of annealing and ZnO dopant on the optoelectronic properties of ITO thin films

2007 | الكلمات المفتاحية ITO films, optoelectronic properties, annealing,
The effect of annealing and ZnO dopant on the optoelectronic properties of ITO thin films
Thin films of indium tin oxide doped with ZnO thin films have been prepared by the electron-beam evaporation technique. The effects of heat treatment and ZnO content on the structural, optical and electrical properties of these films have been investigated. The optical transmission was found to improve with increasing ZnO ratio and annealing temperature. Enhancement of the film crystallinity or ... إقراء المزيد

Ion formation in laser-irradiated cesium vapor

2006 | الكلمات المفتاحية Associative ionization; Penning ionizati,
Ion formation in laser-irradiated cesium vapor
We study theoretically the formation of Cs+ and Cs+2 during cw laser radiation resonant with 6s-7p transition of Cs atomic vapor. This is done by numerically solving rate equations for the evolution of atomic state and electron populations. The results of calculations for the atomic and molecular ions density at different values of laser power clarified that the associative ionization ... إقراء المزيد

Transparent conducting ZnO-CdO thin films deposited by e-beam evaporation technique

2006 | الكلمات المفتاحية optical properties, electrical properties, ZnO:CdO thin films,
Transparent conducting ZnO-CdO thin films deposited by e-beam evaporation technique
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 were ... إقراء المزيد

Enhancement of the optical and electrical properties of ITO thin films deposited by electron beam evaporation technique

2006 | الكلمات المفتاحية ITO thin films, electron beam, optical properties, electrical properties, Structural properties,
Enhancement of the optical and electrical properties of ITO thin films deposited by electron beam evaporation technique
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 the ... إقراء المزيد

Optimization of the optical and electrical properties of electron beam evaporated aluminum-doped zinc oxide films for opto-electronic applications

2006 | الكلمات المفتاحية Optical properties of specific thin film,
Optimization of the optical and electrical properties of electron beam evaporated aluminum-doped zinc oxide films for opto-electronic applications
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 annealing ... إقراء المزيد

Modeling of laser-induced excitation and ionization in cesium atoms

2005 | الكلمات المفتاحية Laser-induced; Ionization; Cesium,
Modeling of laser-induced excitation and ionization in cesium atoms
A theoretical model is presented to describe kinetics of the plasma formation in cesium undergone to resonant laser excitation (D1;2 line). The model is based on a rate equations approach where the following populations are considered: ground state (6s level), laser excited level (6p), a series of high excited levels close to the ionization limit, and the electron density. We ... إقراء المزيد

Effect of annealing and In content on the properties of electron beam evaporated ZnO films

2005 | الكلمات المفتاحية ZnO:In thin films, electron beam, optical properties, Structural properties, electrical properties,
Effect of annealing and In content on the properties of electron beam evaporated ZnO films
The effect of both annealing and In content on the properties of ZnO films prepared 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 low ... إقراء المزيد