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Perovskites have proved to be a promising candidate for solar cells. In this paper we present the simulations work related to the new topics; influence of temperature and multi-Sun (solar concentrator) on performance of perovskite based solar cells. The study shows the dependence of all PV parameters on the operating temperature and solar irradiance. Performance of the perovskite based PV devices...
in this paper, a MATLAB-Simscape-based model for the simulation of a Photovoltaic (PV) generator is presented and discussed. The MPPT techniques based on Fuzzy Logic Control (FLC) are simple to be developed and can provide high efficiency in the control of the PV systems. For this purpose a detailed analysis and a comparative study have been provided for two fuzzy logic MPPT methods recently published...
There are three important parameters in solar photovoltaic (PV) panel performance, namely maximum output power, short-circuit current, and open-circuit voltage. All these parameters are affected by temperature fluctuations. This research is focused on the behaviour of a mono-crystalline solar PV panel under different temperatures using experimental work and the results are validated with a corresponding...
After the golden era of silicon, nowadays compound semiconductors from III-V group is extensively studied to observe their application in electronic as well as in other field. Solar cell which is providing alternative source in our industries, houses and laboratories. Researchers are now trying to find out new features by using these inorganic materials based solar cell which can easily be paved the...
Analyzing the performance of satellite photovoltaic (PV) array before launch and in space missions is crucial for energy balance and missions success. This study proposes a specific method to predict the electrical characteristics of body mounted solar array for microsatellite. Based on limit data provided by manufacturers and semiconductor band gap, the equivalent circuit model and its parameters...
This paper focuses on a generalized model of eco friendly green power technologies like photovoltaic cell using MATLAB. Fundamental mathematical equations based on equivalent circuit of solar photovoltaic cell are used to set up the model. This model shows an overall performance of Photovoltaic cell characteristics by analyzing different types of electrical and environmental parameters. In this paper,...
Partial shading of PV array occurs when it gets covered by some passing clouds, buildings or nearby modules. Analysis of electrical behavior of PV array in case of partial shading done so far considers only the fall of different solar irradiance on different modules with working temperature of all PV panels same as ambient temperature. This paper presents the mathematical formulation of cell working...
In our work we observe the light behavior before and after light-induced degradation of amorphous/microcrystalline (a-Si/μc-Si) tandem silicon-based solar cells. We show that during light-induced degradation the efficiency increases for illumination levels lower than standard test condition illumination. Additionally we examine the temperature coefficient of the open circuit voltage, short circuit...
The J-V characteristics of Cu(In,Ga)(Se,S)2 solar cells are often distorted by so-called “rollover” effect. It is important to estimate the significance of rollover effect upon the device performance. Practical series resistance (Rs) obtained from conventional J-V measurements may consist of genuine Rs and apparent Rs, which arises from the rollover effect. We show that the combination of conventional...
We report on defect recovery of high energy proton irradiated GaInP2/GaAs/Ge triple junctions cells and related component cells by isothermal annealing. For systematically addressing the solar cell behavior all mission representative key parameters are varied: The energy of the impinging protons is 0.75 MeV, 2.0 MeV and 6.5 MeV; the particle fluence is varied within 3 orders of magnitude between 5...
This paper presents the design and implementation of electronic equipment able to emulate the characteristics of current, voltage and power, of solar panels between 50 W and 100 W, with values in irradiance and temperature programed by the user. The device is composed by a flyback converter with a Current Injection Control (CIC) and has a software developed in Labview® and Arduino, that allows to...
We compare the temperature rise due to solar heating in GaAs nanowire solar cells to planar cells. We find that despite more highly concentrated light absorption and reduced thermal conductivity, the overall temperature rise in nanowire structures is lower than in planar structures. Moreover, coating the nanowires with a transparent conductive polymer with high absorption at thermal wavelengths can...
Despite the recent advances in space technologies, electrical power systems are still challenging researchers developing small satellites for low earth orbit use. In order to supply their subsystems, these satellites can only use the power stored onboard from solar energy. Therefore, the electrical power system should ensure a maximum exploitation of energy sources and should optimize the distribution...
Solar cell is the key component of photovoltaic system on converting the solar radiation to electrical energy. The environmental factors such as solar irradiation, temperature, humidity and dust can directly affect the power output characteristics of solar cells that applied in the different area. Compared with the terrestrial environment, the marine environment is more severe, and the power output...
This paper presents the Dependency of Series Resistance over a wide range of Irradiance And Temperature for HIT Technology As Per IEC 61853-1. A quantitative assessment of the effect of series resistance on electrical performance parameters of HIT technology has been studied from long term outdoor performance data. Degradation of the performance of HIT technology after one year of outdoor exposure...
A nanoimprint based approach to achieve efficient light management for solar cells on low temperature transparent polymer (PET) films is presented. The imprint-textured PET substrates show excellent light scattering properties and lead to significantly improved incoupling and trapping of the light in the solar cell, resulting in a current density of 12.9 mA/cm2, similar to that on a glass substrate...
Experimental results of solar cells tested under deep space conditions are presented. The impact of low intensity and low temperature (LILT) conditions on the performance characteristics, in particular the fill factor, is discussed. The paper closes with a review of the elimination and mitigation of LILT effects by dedicated solar cell device design.
We investigated the synthesis of kesterite Cu2ZnSnS4 (CZTS) thin films using thermal evaporation from copper (Cu), zinc (Zn) and tin (Sn) pellets and post-annealing in a sulfur atmosphere. Two different metal precursor stacking orders (Cu/Sn/Zn/Cu and Cu/Sn/Cu/Zn) have been tested and experimental results prove that a layer of Cu on the top provides higher compositional uniformity and fewer secondary...
We report temperature-dependent characterization of the electrical and optical properties of GaAs single junction solar cells up to 450 °C. An external quantum efficiency (EQE) of 75% was maintained at temperatures up to 300 °C, with a corresponding increase in the absorption edge as a function of wavelength due to the decrease in band gap with temperature, in agreement with theory. Above 300 °C,...
The SiOx(C)/SiNx dual-layer shows a better anti-reflection coating compared with standard SiNx films, after deposition and annealing. In this paper, the effect of film thickness, sintering peak temperature, belt speed, etc. on the anti- reflectance of SiOx(C) film were discussed. Under optimized condition, the weighted reflectance of SiOx(C)/SiNx dual-layer obtained 1.25% reduction; the efficiency...
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