Browsing by Supervisor "staya"
Now showing items 1-20 of 20
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Assessment of Health Risk from X-Ray Radiation on Staff Workers in Selected Gaza Strip Hospitals
(الجامعة الإسلامية - غزة, 2015)For over a century, radiation has been used in medicine. It is also considered as hazardous agent in the workplace. In governmental hospitals of Gaza Strip, there are few radiation protection programs, staff workers do not ... -
Characteristics of propagation of electromagnetic waves in slab waveguide structures comprising chiral and left-handed materials
(الجامعة الإسلامية - غزة, 2016)Abstract Characteristics of guided modes in slab waveguide structures which consist of chiral materials and left handed materials (LHMs) are analytically presented. We concentrate our study on chiral nihility materials, ... -
Characterization of Dye Sensitized Solar Cells Sensitized with the Extract of Trigonella foenum-graecum Seeds
(الجامعة الإسلامية - غزة, 2015)Dye sensitized solar cells (DSSCs) are considered as one of the main axis for search during the last few years due to low production cost. The purpose for this thesis was to prepare DSSCs by using Titanium dioxide (TiO2) ... -
Dye Sensitized Solar Cells Based on Natural Dyes Extracted from Plant Roots
(الجامعة الإسلامية - غزة, 2015)The objectives of this thesis are to prepare dye sensitized solar cells (DSSCs) using titanium dioxide (TiO2) as a semiconducting layer based on six natural dyes extracted from plant roots which are purple carrot, carrot, ... -
Dye-sensitized Solar Cell Using Natural Dyes "DSSCs"
(الجامعة الإسلامية - غزة, 2013)In this thesis, many dye sensitized solar cells were fabricated using as a semiconducting layer and natural dyes as photosensitizers. Thin layers of nanocrystalline were prepared on transparent fluorine doped tin oxide ... -
Dye-Sensitized Solar Cell Using Natural Dyes Extracted From Dried Flowers
(الجامعة الإسلامية - غزة, 2015)In this thesis, dye sensitized solar cells (DSSCs) were prepared using titanium dioxide (TiO2) as a semiconducting layer spread on transparent conducting fluorine tin oxide (FTO) coated glass using doctor blade method and ... -
Dye-Sensitized Solar Cells Using TiO2 as a Semiconducting Layer
(الجامعة الإسلامية - غزة, 2013)The dye-sensitized solar cell (DSSC) is one of the photochemical electric cells, which consists of the photoelectrode, the dye, the electrolyte, and the counter electrode. The advantage of DSSCs is the low cost of the solar ... -
Dye-Sensitized Solar Cells Using ZnO as A Semiconducting Layer
(الجامعة الإسلامية - غزة, 2012)Dye-sensitized solar cell (DSSC) was developed by Grätzel in 1991 which was named "Grätzel Cell". DSSC is considered the third generation of photovoltaic devices for the conversion of visible light into electric energy. ... -
Effect of Adding Nano Layers on the Performance of Solar Cells Sensitized with Eosin Y and its Derivatives
(الجامعة الإسلامية - غزة, 2017)Dye sensitized solar cells (DSSCs) is a new technology which considered to be the third generation of the photovoltaic technology. DSSCs have multiple advantages such as simple fabrication, low-cost and environment friendly. ... -
Electrical and Optical Properties of Organic Diodes
(الجامعة الإسلامية - غزة, 2012)Two groups of samples have been prepared and some characteresations are studied. Every sample represents an organic diode. The first group is double layer device. Twelve samples with the structure ITO/PVK/dye/InGa have ... -
Investigation of solar cells sensitized with haematoxylin
(الجامعة الإسلامية - غزة, 2017) -
naturl pigments extracted from plant leaves as photosensitizers for dye - sensitized solar cells
(الجامعة الإسلامية - غزة, 2016) -
New Slab Waveguide Structures as Optical Sensors
(the islamic university, 2011)This work concerns planar optical waveguide sensors with the focus on slab waveguide structures comprising left-handed materials with simultaneously negative electric permittivity and magnetic permeability. In the last two ... -
Novel Slab Waveguide Optical Sensors
(الجامعة الإسلامية - غزة, 2014)An optical slab waveguide sensor is proposed. The structure of the proposed sensor consists of three-layer dielectric slab waveguide with conducting layers at the interfaces. The dispersion relation, sensitivity, and power ... -
Optical Sensors Based on Photonic Crystal
(الجامعة الإسلامية - غزة, 2016)In recent years, photonic crystals have achieved a lot of research significance due to their applications in many fields. Many photonic ccrystal sensors have been proposed based on their novel structure and unique physical ... -
Properties of graded index thin film waveguides comprising left-handed materials
(الجامعة الإسلامية - غزة, 2016)Abstract Dispersion properties of guided modes in three-layer slab waveguide structures with a linearly graded-index profile film are investigated. Closed-form expressions for electric and magnetic fields and the dispersion ... -
Reflection and transmission from a multilayer structure with conducting interfaces
(الجامعة الإسلامية - غزة, 2013) -
Slab Waveguide Optical Sensors Using Negative-Index Materials
(الجامعة الإسلامية - غزة, 2015)In this thesis, two waveguide structures were assumed as sensors for detection variation in the index of refraction of an analyte. The first structure comprises a Left-Handed Material (LHM) in the core layer whereas the ... -
The Influence of Copper-phthalocyanine Layer, Heat Treatment, and Electric Field on the Performance of Poly (9-Vinylcarbazole)/Rhodamine B/Pb Organic Light Emitting Diodes
(الجامعة الإسلامية - غزة, 2015)In this work, two groups of samples have been prepared and their characterizations have been studied. The first group is a double layer device with the structure of ITO/PVK/Rhodamine B dye/Pb. Some of the samples were ... -
Theoritical Characterization of Different Samples Using Rotating Polarizer and Analyzer Ellipsometer with A Fixed Compensator
(الجامعة الإسلامية - غزة, 2012)Ellipsometry is an extremely powerful tool for the study the optical properties of materials with high optical data precision in measurement. Being accurate, fast and non-destructive in data acquisition and characterization ...