9 Works

The Ninth International Seminar on Ferroelastic Physics. Abstracts Book

L.N. Korotkov, S.A. Gridnev & A.S. Sidorkin
The 9th International Seminar on Ferroelastics Physics has been organized in Voronezh in september, 2018. This article is the conference volume, it contains the abstracts of about 90 contributions presented at ISFP9, dedicated to the following aspects of ferroelastic physics: Phase Transitions; Lattice Dynamics and Soft Modes; - Crystal Growth, Structure and Physical Properties; Heterogeneous; Glassy and Incommensurate Systems; Domains, Domain Boundaries and Their Dynamics; Multiferroics and Miscellaneous.

Simulation and optimization of the nSiC layer’s thickness in a nSiC/Si photovoltaic cell

M. Kabe, Y. Lare, L. Ottaviani, M. Pasquinelli, D. Barakel & M. Portail
Simulations of the emitter layer in 3C-SiC heterostructure solar cells were performed by means of the SCAPS software to model the optimal thickness and predict the influence on cell’s behaviour. Then, the cells have been elaborated by chemical vapor deposition and characterized. The opto-electrical measurements showed an improvement of the absorption of photons in the short wavelengths thanks to the thin layer of the emitter, and the non-degradation in bulk of the base cell. On...

ARMA model for short-term forecasting of solar potential: application to a horizontal surface on Dakar site

A. Mbaye, M.L. Ndiaye, D.M. Ndione, M. Sylla, M.C. Aidara, M. Diaw, V. Traoré, A. Ndiaye & P.A.S. Ndiaye
This paper presents a model for short-term forecasting of solar potential on a horizontal surface. This study is carried out in to the context of valuing of energy production from photovoltaic solar sources in the Sahelian zone. In this study, Autoregressive Moving Average (ARMA) process is applied to predict global solar potential on a 24 hours time horizon. The ARMA (p, q) is based on finding optimum parameters p and q to better fit considered...

ARMA model for short-term forecasting of solar potential: application to a horizontal surface on Dakar site

A. Mbaye, M.L. Ndiaye, D.M. Ndione, M. Sylla, M.C. Aidara, M. Diaw, V. Traoré, A. Ndiaye & P.A.S. Ndiaye
This paper presents a model for short-term forecasting of solar potential on a horizontal surface. This study is carried out in to the context of valuing of energy production from photovoltaic solar sources in the Sahelian zone. In this study, Autoregressive Moving Average (ARMA) process is applied to predict global solar potential on a 24 hours time horizon. The ARMA (p, q) is based on finding optimum parameters p and q to better fit considered...

A simple and inexpensive technique for obtaining low dimensional semiconductor nanostructures

S. Larramendi
The isothermal closed space sublimation (ICSS) is a simple and effective technique of low- cost, used to obtain thin films of semiconducting materials, embedding nanoporous substrates with semiconducting materials, or to grow nanocrystals inside pores. In this work it is explained how to use this technique to conform semiconductor structures using porous alumina membranes and ZnO nanorod matrix as template. As a result a structure with potential use in photovoltaic solar cells is obtained, with...

Modelling and simulation of an automatic solar module characteristics data acquisition system

E. Akoro, G.J.P. Tevi, M.E. Faye, M. Sene & A.S. Maiga
This paper is devoted to the design and simulation of an automatic data acquisition system of solar module characteristics. The system is essentially composed of three parts. The first part is devoted to the acquisition of the electrical parameters of the solar module (Current, Voltage and Power) in automatic ways using an automatic variable load. The second part is focused on devices which measure the ambient temperature and solar irradiation. In the last part, we...

Characterization and modeling of solar radiation on the ground, application to the estimate of solar potential available on the coast of Nouakchott

Ahmed Sidibba, Diene Ndiaye, Sidi Bouhamady & Menny El Bah
The purpose of this work is to evaluate four empirical models developed in literature such as Ghouard, Perrin Brichambaut, Bird and Hulstrom and Dependent model of the Link trouble factor. The validation of these different theoretical models was carried out using solar global radiation data collected on the Cheikh Zayed Nouakchott power plant. These measurements were carried out at a time step of 5 minutes during the period of one year. (April 1, 2015 to...

Optical properties of PZN-PT nanoparticles thin layer on ITO glass for photovoltaic application

R. Ndioukane, D. Kobor, L. Motte & J. Solard
In this work, undoped and Mn doped Pb(Zn 1/3 Nb 2/3 )O 3 -4.5PbTiO 3 nanoparticles were dispersed in biopolymer and in mixed biopolymer + pentacene as active layer and deposited by spin coating on ITO glasses. Morphological, optical and electrical properties of these layers were investigated. SEM images show the superposition of different deposited layers ITO/TiO2/PZN-PT-np-biopolymer on glass substrate with thicknesses of 1.600 μm, 1.505 μm and 1.765 μm respectively. The absorbance value in...

Design and optimization of silicon nanostructures

B. Dieng, M. Beye, M. Toure, D. Diouf, D. Kobor & A.S. Maiga
in this work, recent advances in various silicon nanostructures used in crystalline silicon solar cells for antireflection and light trapping are reviewed. Simulations and optimizations are also performed for the most relevant of these nanostructures. The results showed that nanocones and nanoparaboloids outperform nanopillars and give almost the same antireflective performance, reducing the average reflectance of the crystalline silicon surface below 2% in the wavelength range 300-1100 nm and under normal incidence. This reflectance is...

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