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This work deals with the modeling and optimization of the CuInGaSe/CdS based structure, for photovoltaics. In this study we took into consideration the effect of the concentration of the alloy and the temperature on the strain bandgap, the absorption and efficiency of the structure. It has been shown that the gallium concentration x varies the strain bandgap energy, these two parameters significantly...
In this work, we were interested about the study of modeling and simulation of a structure based on In1−xGaxN/GaN for photovoltaic applications. This ternary alloy who is an III-V semiconductor presents important characteristics especially its bandgap energy, thus the enhancement of the absorption of photons with wavelengths near to red. We had also studied a different parameters characterized the...
Photovoltaic (PV) module degradation in the field is a known issue; however, understanding the modes and mechanisms in which modules degrade is still a major undertaking for researchers. To understand the degradation modes and mechanisms, both nondestructive and destructive characterization techniques need to be employed. This paper presents the results and conclusions obtained based on a few major...
Thermal processes play an essential role in the production and processing of countless industrial and consumer products. Narrow bandwidth near infrared (NIR) light allows contactless transfer of energy with a high power per area that can be tailored to the needs of the application. With arrays of VCSELs (Vertical-Cavity Surface Emitting Laser diodes), NIR emitters can be realized that provide heat...
The performance of triple-junction photovoltaic (PV) devices depends on the distribution of their energy bandgaps, the concentration ratio and operational temperature. The choice of materials for such devices is based on trading the optimum bandgap for the lattice parameter. Also, the sub-cells behave differently under light concentration and having them operating together under the same concentration...
Perovskite based hybrid organic/inorganic solar cells have recently emerged as a possible alternative to silicon PV technology. These cells are solution processed which makes them significantly cheaper than the current technologies. In addition, the power conversion efficiency of such cells has surged from 6% to 19% in few years and consequently has induced a huge enthusiasm in the photovoltaics community...
With the advancement in the field of renewable energy sources, solar energy harvesting played an important role for the electrification. But major challenge was the efficiency of the solar photovoltaic (PV) system as with the increase in internal temperature of the PV cells the solar panel efficiency decreases. In the recent past, several methods had been experimented. The present paper deals with...
The III-nitride material system offers substantial potential to develop high-efficiency solar cells. The direct gap of the InxGa1−xN alloy system extends continuously from InN (0.7 eV, in the near IR) to GaN (3.4 eV, in the mid-ultraviolet). In this work, the performances of a solar cell based on InGaN were simulated under the illumination conditions of one sun by employing SILVACO software.
In this work, we propose a novel structure of solar cell based on copper-indium-gallium-diselenide CuIn1−xGaxSe2 (CIGS) absorber layer by using SCAPS-1D (Solar Cell Capacitance Simulator of the University of Gent). This numerical simulation has been used to explore the possibility of higher efficiency and stable CdS/CIGS cell structures with (ZnO) as window layer, and (CdS) a buffer layer, (CIGS)...
Solar cells based on II–VI semiconductors are among the leading candidates for low-cost photovoltaic conversion of solar energy due to their high absorption coefficients and therefore the low material consumption for their production. To understand the basics of photovoltaic (PV) cells, several types of simulation software are available. This work reports on the analysis of Zinc Telluride (ZnTe) thin...
Titania (TiO2) has been an important renewable material that is able to convert solar energy into chemical energy in recent years. Therefore, the main focus of this paper centers around different strategies and precursors to prepare TiO2 with various shapes, e.g. perforated hollow TiO2, anatase hollow TiO2 spheres, well-aligned TiO2 and rambutan-like TiO2/liquid crystal composite, so as to utilize...
Heterogeneous nanostructures, with many appealing merits, are promising in various applications, including sensing, photovoltaic, light emitting diode and water splitting. Herein, we proposed a novel facile fabrication methods for zinc oxide (ZnO)/cobalt oxide (Co3O4) heterojunction nanostructures. By growing or assembling Co(OH)2 nanoplates on ZnO nanowire arrays, the ZnO/Co3O4 heterogeneous nanostructures...
In this paper, a numerical analysis of relevant electrical parameters of multilayer structures for CIGS-based solar cells was carried out, employing the simulation software wxAMPS. In particular, we have focused on thin film cells having a ZnO:Al/ZnO/CdS/CIGS structure with a Molybdenum back contact. The aim of this work is to establish good theoretical reference values for an ongoing experimental...
End of 2013 EURAMET, the European metrology organization opened a call to advance measurement science and technology in the field of Energy by providing funding for Joint Research Projects (JRP) to be funded jointly by the European Commission and the participating countries in the frame of the European Metrology Research Programme (EMRP). This paper describes a planned project; no technical results...
Polymer based organic photovoltaic systems, which can be mass-produced by roll-to-roll printing technology, hold the promise for a cost-effective, lightweight and mechanical flexible solar energy conversion platform. Nevertheless, challenges still remain for large-scale applications of these flexible solar cells. One of the issues of great importance is the long-time reliability of solar cell module...
We examine the enhancement effects of switching from silver (Ag) nanoparticles (NPs)to nonresonant aluminium (Al) NPs on light absorption in a-Si solar cells. Al nanocubes on ITO spacer increase absorbed power by 24.3% over a cell with Ag nanocubes and 19.4% over a bare cell.
Chlorobenzene, o-dichlorobenzene, and 1,2,4-trichlorobenzene were used as solvents to fabricate active layers of poly(3-hexylthiophene) (P3HT) and fullerene derivatives for polymer solar cells. The fullerene derivatives employed in this study include indene-C60 bisadduct (ICBA) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). The microstructural features of P3HT:ICBA and P3HT:PCBM thin films...
Polymer based organic photovoltaic systems, which can be mass-produced by roll-to-roll printing technology, hold the promise for a cost-effective, lightweight and mechanical flexible solar energy conversion platform. Nevertheless, challenges still remain for large-scale applications of these flexible solar cells. One of the issues of great importance is the long-time reliability of solar cell module...
The polycrystalline cadmium telluride (CdTe) is a leading photovoltaic (PV) material for the possibility of high-efficiency and low-cost thin film solar cell. The absorber material CdTe has a high absorption coefficient over 5×105/cm and it has a direct bandgap of 1.45 eV, which is very close to the optimum bandgap for solar cells. In this work, numerical analysis was done utilizing AMPS (Analysis...
InxGa1−xN/GaN quantum dot intermediate band solar cell (QD-IBSC) is a promising candidate for the purpose of efficiency improvement of solar cells. In this work, the influences of interdot distance, quantum dot size and indium content of InxGa1−xN/GaN QD-IBSC on the position and width of the intermediate bands are investigated by solving Schrödinger equation using Kronig-Penney model. Finally the...
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