Design and Simulation of InGaN -Junction Solar Cell

The tunability of the InGaN band gap energy over a wide range provides a good spectral match to sunlight, making it a suitable material for photovoltaic solar cells. The main objective of this work is to design and simulate the optimal InGaN single-junction solar cell. For more accurate results and best configuration, the optical properties and the physical models such as the Fermi-Dirac statistics, Auger and Shockley-Read-Hall recombination, and the doping and temperature-dependent mobility model were taken into account in simulations. The single-junction In 0.622 Ga 0.378 N (Eg = 1.39 eV) solar cell is the optimal structure found. It exhibits, under normalized conditions (AM1.5G, 0.1 W/cm 2 , and 300 K), the following electrical parameters: sc = 32.6791 mA/cm 2 , oc = 0.94091 volts, FF = 86.2343%, and = 26.5056%. It was noticed that the minority carrier lifetime and the surface recombination velocity have an important effect on the solar cell performance. Furthermore, the investigation results show that the In 0.622 Ga 0.378 N solar cell efficiency was inversely proportional with the temperature

Design and Simulation of InGaN p-n Junction Solar Cell

The tunability of the InGaN band gap energy over a wide range provides a good spectral match to sunlight, making it a suitable material for photovoltaic solar cells. The main objective of this work is to design and simulate the optimal InGaN single-junction solar cell. For more accurate results and best configuration, the optical properties and the physical models such as the Fermi-Dirac statistics, Auger and Shockley-Read-Hall recombination, and the doping and temperature-dependent mobility model were taken into account in simulations. The single-junction In0.622Ga0.378N (Eg = 1.39 eV) solar cell is the optimal structure found. It exhibits, under normalized conditions (AM1.5G, 0.1 W/cm2, and 300 K), the following electrical parameters: Jsc=32.6791 mA/cm2, Voc=0.94091 volts, FF = 86.2343%, and η=26.5056%. It was noticed that the minority carrier lifetime and the surface recombination velocity have an important effect on the solar cell performance. Furthermore, the investigation results show that the In0.622Ga0.378N solar cell efficiency was inversely proportional with the temperature

Solar Module Fabrication

One of the most important steps in the photovoltaic industry is the encapsulation of the solar cells. It consists to connect the cells in order to provide useful power for any application and also protect them from environmental damages which cause corrosion, and mechanical shocks. In this paper, we present the encapsulation process we have developed at Silicon Technology Unit (UDTS) for monocrystalline silicon solar cells. We will focus particularly on the thermal treatment, the most critical step in the process, which decides on the quality and the reliability of the module. This thermal treatment is conducted in two steps: the lamination and the polymerization. Several tests of EVA reticulation have been necessary for setting technological parameters such as the level of vacuum, the pressure, the temperature, and the time. The quality of our process has been confirmed by the tests conducted on our modules at the European Laboratory of Joint Research Centre (JRC) of ISPRA (Italy). The electrical characterization of the modules has showed that after the encapsulation the current has been improved by a factor of 4% to 6% and the power gain by a factor of 4% to 7%. This is mainly due to the fact of using a treated glass, which reduces the reflection of the light at a level as low as 8%

Epidemiology and antimicrobial resistance of <em>Streptococcus agalactiae</em> isolated in Alger from confirmed neonatal infections and from vaginal carriage settings

International audienc

Software for the modeling and simulation of PV module’s electric characteristics

International audienc

Outdoor performances of four photovoltaic technologies under four typical meteorological conditions

International audienceWe present a comparative study of the behavior and performance undervarious weather conditions of four PV modules of different technologies recorded in four typical daysin summer and winter. The study is based on the simultaneous and continuous testing of PV modules under natural conditions of a site located in a coastal area of southern Mediterranean. We essentially interested to the fill factor the conversion efficiency and the energy performance. A brief description of the experimental set up and the originally method is given after the introductive paragraph. All obtained graphical results allow at first the validation of the approach and at second point out that the daily evolution curves of the fill factor and the efficiency of the PV modules adopt different paces depending on the PV technology. In addition the results of the energy study showthat the performance ratios of the different technologies aredifferently influenced by weather environment and seasons