A5103128772- Photovoltaic System Optimization Techniques
- Energy and Environment Impacts
- Solar Radiation and Photovoltaics
- Smart Grid Energy Management
- Photovoltaic Systems and Sustainability
- Semiconductor materials and interfaces
- solar cell performance optimization
- Silicon and Solar Cell Technologies
- Semiconductor Quantum Structures and Devices
- Water-Energy-Food Nexus Studies
- Semiconductor materials and devices
- Chalcogenide Semiconductor Thin Films
- Energy Harvesting in Wireless Networks
- Integrated Circuits and Semiconductor Failure Analysis
- Solar Thermal and Photovoltaic Systems
- Power Systems and Renewable Energy
- Water resources management and optimization
- Integrated Energy Systems Optimization
- GaN-based semiconductor devices and materials
- Thin-Film Transistor Technologies
- Water Systems and Optimization
- Advanced Battery Technologies Research
- Quantum Dots Synthesis And Properties
- Child Nutrition and Water Access
- Microgrid Control and Optimization
Centre National de la Recherche Scientifique
2017-2024
Sorbonne Université
2016-2024
Laboratoire de Génie Électrique et Électronique de Paris
2013-2024
Université Paris-Saclay
2017-2024
CentraleSupélec
2017-2024
Direction Générale de la Pharmacie, du Médicament et des Laboratoires
2019-2024
Imperial College London
2019
CY Cergy Paris Université
2019
Université de Rennes
2019
Stanford University
2019
Photovoltaic water pumping systems (PVWPS) are a promising solution to improve domestic access in low-income rural areas. It is challenging, however, make them more affordable for the local communities. We develop here comparative methodology assess relevant features of both widely employed PVWPS architecture with tank storage, and hardly used battery bank instead storage. The quantitative comparison carried out through techno-economic optimization, goal minimizing life cycle cost...
A sensitivity analysis is carried out on the parameters of a photovoltaic water pumping system (PVWPS) for domestic supply in rural areas. The results show that modules peak power, motor-pump efficiency, and tank volume strongly influence performance. This highlights these constitute judicious optimization variables. Besides, cost motor-pump, tank, lifetime PVWPS have largest impact cost. These six are therefore primary importance technoeconomic optimal sizing system. Finally, it shown...
In this paper, we investigate the power degradation in a novel photovoltaic (PV) cell reconfiguration named KenDoKu (KDK) topology under different shading patterns. We analyze how modification linkage between PV cells within shaded module can affect its effectiveness. The proposed approach relocates physical position of without any change electrical connections and redistributes effects over for improvement generation. To achieve purpose, modeling simulation are performed set various...
The defect properties of InGaAsN dilute nitrides grown as sub-monolayer digital alloys (SDAs) by molecular beam epitaxy for photovoltaic application were studied space charge capacitance spectroscopy. Alloys i-InGaAsN (Eg = 1.03 eV) lattice-matched on GaAs wafers a superlattice InAs/GaAsN with one monolayer InAs (<0.5 nm) between wide GaAsN (7–12 layers active in single-junction solar cells. Low p-type background doping was demonstrated at room temperature samples 900 nm and 1200...
Photovoltaic water pumping could significantly improve access, particularly in off-grid rural villages of Sub-Saharan Africa. Earlier, we have developed and validated a numerical model photovoltaic system (PVWPS). Such allows to include the consumption profile as an input. The current study assesses influence temporal resolution on accuracy PVWPS optimal sizing. This helps select adapted for data acquisition, modelling optimization order keep storage computational time low without changing...
In this work, a hybrid algorithm of Levenberg-Marquardt and empiric analytic method is proposed to solve the recurring convergence problem that occurs during module parameters extraction with iterative method. The aims avoid divergence long computation time due improper initial value. Elsewhere, LTSpice photovoltaic cell model developed simulate extracted in sub-Saharan outdoor conditions. it virtual component expected facilitate understanding behavior under these Measurements performed...
The properties of n‐GaP/p‐Si interface as well their influence on solar cell performance are studied for GaP layers grown by low‐temperature (380 °C) plasma‐enhanced atomic layer deposition (PE‐ALD). different plasma treatments and RF power values explored. increase leads to a growth transition from amorphous (a‐GaP) microcrystalline (μc‐GaP) with either amorphous‐GaP/Si or epitaxial‐GaP/Si interface, respectively. However, when continuous hydrogen is used the exhibits better photovoltaic...
Recently we have developed a model of photovoltaic water pumping systems (PVWPS) for domestic access in poor rural areas. In this article, perform sensitivity analysis over the 14 parameters model. We study how variation value influences output and optimal sizing obtained from model, both dry wet season. Results indicate that peak power modules, efficiency motor-pump tank volume highest impact on output. Besides, which significantly influence are position entry tank, stop level float switch,...
Defect properties of Ga(In)P(NAs) layers with different composition were studied by admittance spectroscopy. For nitrogen content the defect level energy 0.44-0.47 eV, which related to incorporation into GaP, was observed. Its concentration is lower for GaPNAs compared GaPN/InP due better compensation arsenic than indium in lattice GaP. Other 0.30 eV detected GaPAs and layers. Likely, both observed defects have same nature.
In this work, impacts of temperature and dust cleaning on photovoltaic module performance operating in sub-Saharan's climate are investigated. Two single junction technologies, monocrystalline polycrystalline silicon, one micromorph (amorphous/micrystalline) thin film silicon tandem technology considered. We have recorded at the same time under real conditions, current versus voltage characteristics each module, local solar irradiation. All measurements were performed with outdoor monitoring...
Thin film solar cells temperature sensitivity and impact of the main recombination mechanism location are investigated in this paper. The mechanisms bulk at heterojunction interface discriminated. Using a 1D simulation software, “Solar Cell Capacitance Simulator” (SCAPS), we observed higher coefficient open circuit voltage ( V oc ) for with centers than one volume. Furthermore, an LTSpice module model is used to visualize effects centers' on performance ratios modules. results show more...
Photovoltaic water pumping systems (PVWPS) are an interesting solution to improve access in off-grid areas. Irradiance being the main input of PVWPS models, source (local sensor or satellite database) and temporal resolution irradiance data strongly influence accuracy models optimal sizing obtained from these models. We show that we can use instead a local 1 hour without significantly changing model optimization results. These results allow intensify implementation
An attractive method of low‐temperature plasma‐enhanced atomic layer deposition (PE‐ALD) GaP on silicon wafer was recently proposed. In the present paper, influence growth process quality wafers is explored by space charge capacitance techniques, C–V profiling and deep level transient spectroscopy (DLTS). No DLTS peak observed for PE‐ALD deposited onto n‐type wafer, meaning that defect concentration very low (less than 1 × 10 12 cm −3 ) does not affect properties n‐Si wafer. For boron‐doped...
Thin layers of μc-GaP and a-GaP grown on n- type silicon wafers by plasma-enhanced atomic layer deposition at 380 °C are characterized space charge capacitance techniques, C-V profiling deep level transient spectroscopy (DLTS). Two defect levels with activation energies 0.30 eV 0.80 were detected DLTS in the μc-GaP/n-Si structure. Measurements performed Schottky barriers formed n-Si after selective etching GaP did not reveal any meaning that observed defects structure related to layer.