A5021240404- Photovoltaic System Optimization Techniques
- Silicon and Solar Cell Technologies
- solar cell performance optimization
- Conducting polymers and applications
- Solar and Space Plasma Dynamics
- Advanced Photocatalysis Techniques
- Solar Radiation and Photovoltaics
- Solar Thermal and Photovoltaic Systems
- Electrochemical sensors and biosensors
- TiO2 Photocatalysis and Solar Cells
- Graphene research and applications
- Graphene and Nanomaterials Applications
- Atmospheric Ozone and Climate
- Impact of Light on Environment and Health
- Semiconductor materials and interfaces
- Organic Electronics and Photovoltaics
- Spacecraft Design and Technology
- Thin-Film Transistor Technologies
- Analytical Chemistry and Sensors
- Gas Sensing Nanomaterials and Sensors
- Copper-based nanomaterials and applications
- Solar-Powered Water Purification Methods
- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Quantum Dots Synthesis And Properties
National Research Institute of Astronomy and Geophysics
2016-2025
South Valley University
2022
Institute of Astronomy
2016
Astronomy and Space
2016
Helwan University
2012-2013
Slovak University of Technology in Bratislava
2000
Dye-sensitized solar cells (DSSCs) have great potential as a renewable energy technology assisting combat climate change due to its low cost, adaptability, and sustainability. Oxygen plasma ion doping is promising strategy improve the capacity of low-cost, platinum-free counter-electrodes (CEs) absorb photons drive high-performance DSSCs via generating an abundance active absorption sites. In this instance, novel PAni-ZnO (PZ) composite layers were designed CE material received various...
In the recent years, solar energy becomes one of most important alternative sources electric energy, so it is to improve efficiency and reliability photovoltaic (PV) systems. Maximum power point tracking (MPPT) plays an role in systems because maximize output from a PV system for given set conditions, therefore their array efficiency. This paper presents maximum tracker using Fuzzy Logic theory system. The work focused on well known Perturb Observe (P&O) algorithm compared designed fuzzy...
Solar spectral variation is important in characterization of photovoltaic devices. We present results an experimental investigation the effects daily on device performance multicrystalline silicon module. The concentrate analysis outdoor solar measurements carried out at 1 min intervals clear sky days. Short circuit current and open voltage have been measured to describe module electrical performance. shown that shift spectrum towards infrared has a negative impact bands visible region...
Abstract Series resistance (Rs) is considered to be one of the most important parameters affecting solar cell performance, especially those operating under concentrated radiation. Many methods have been proposed where estimated Rs values do not coincide or even come close each other. In this paper, seven for determining are reviewed and verified experimentally using a commercial single-crystal silicon (104cm2 total area). Their differences lie principally in: (1) number diodes quoted in...
Abstract In this work, the nanotechnology procedure was utilized to improve both adhesion force and surface properties of graphene oxide (GO) films. GO has been obtained in a powder form by oxidation purified graphite using modified Hummer’s technique. Different films nanoparticles (NPs) were deposited several types solvents distilled water, acetone, ethanol, dimethyl formamide (DMF) or ethylene glycol. Examination structural optical studied XRD UV–vis absorption spectroscopy. Moreover,...
Abstract To improve the performance of organic solar cells by enhancing properties photoactivated nanocomposite layer, UV irradiation process was used to activate titanium dioxide nanoparticles (TiO 2 NPs). Herein, polymer were fabricated with FTO/(PAni-TiO )/Ag system. A series mixed polyaniline (PAni) 20% activated TiO NPs at different processing times form PAni-TiO films. The structural evolution, surface characteristics, optical and electrical films have been investigated. XRD patterns...
Abstract Titanium dioxide nanoparticles (TiO 2 NPs) were synthesized by a surfactant-templated hydrothermal method at low temperature (75 °C) for photocatalytic applications. Investigation of structural, optical and properties TiO2 NPs characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission (HR-TEM), FT-IR UV – vis absorption spectroscopy. The structural analysis confirmed polycrystalline tetragonal anatase phase with nanocrystalline structure...
Abstract In this context, we utilized a simplified representation of the curved cylinder flux tube to approximate helical structure prominence. By considering bright features as indicators magnetic field, measured average twist angle prominence legs. To gather necessary data, obtained image data with wavelength 171 Å from Solar Dynamic Observatory (SDO)/Advanced Imaging Assembly (AIA) archive. We employed some IDL routines within SolarSoft (SSW) package determine rope’s total for confined...
Abstract Severe research attempts are still in progress to improve the performance of polyaniline (PAni) based photoactive layers as one cheapest materials used for manufacturing organic solar cells. Herein, polymer cells were fabricated with ITO/(PAni-TiO 2 )/Au system. The (PAni-TiO ) treated a hydrogen-plasma discharge low processing time 0, 3 and 5 min enhance synthesized efficiency. morphology, micro structure optical properties prepared samples plasma nanocomposite investigated...