We investigated the hybrid system between Nitrogen doped Single Wall Carbon Nanotubes (N- SWCNT) and fullerene (C 60 C 70 ) molecules. The structure of the encapsulated fullerenes inside N-SWCNTs is derived from minimum energy calculation using a convenient Lennard-Jones expression of the Van der Waals intermolecular potential. The nonresonant Raman spectra of peapods are studied by using Raman spectroscopy. The dependence of the Raman spectra as a function of the nanotube diameter is discussed....

The international symposium TRAMP19 was dedicated to the different aspects of the Materials Science and especially to advanced materials and their applications in energy, transport, medical and biological sectors. It has been a great opportunity for the junior and experienced scientists to share their knowledge on these hot subjects. These proceedings contain abstracts of communications given at TRAMP19 on various subjects related to advanced materials.

Diffusion is a natural or artificial process that governs many phenomena in nature. The most known diffusion is the Brownian or normal motion, where the mean-square-displacement of the tracer (diffusive particle among others) increases as the square-root of time. It is not the case, however, for complex systems, where the diffusion is rather slow, because at small-scales, these media present an heterogenous structure. This kind of slow motion is called subdiffusion, where the associated mean-square-displacement...

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...

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...

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...

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...

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...

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.

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...

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...

In this paper, we present new organics chemical structures of pendant phenyl ester -substituted thiophene and benzothiadiazole based copolymers leading to donor (D)-acceptor (A) structure-types. Geometrics and photo-physical properties of the studied chemical structure are exploited in the further ground and excited - state. Theoretically, using the DFT and TD -DFT quantum chemical calculation implanted in Gaussian09 software, geometrical and electronic parameters such as the energy of HOMO and LUMO level, the Egap= EHomo -...

The structure of boron–nitride nanotubes (BNNTs) is very similar to that of CNTs, and they exhibit many similar physical and chemical properties. In particular, a single walled boron nitride nanotube (BNNT) and a single walled carbon nanotube (CNT) have been reported. The spectral moment’s method (SMM) was shown to be a powerful tool for determining vibrational spectra (infrared absorption, Raman scattering and inelastic neutron- scattering spectra) of harmonic systems. This method can be applied to...

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...

The present document gathers communications given at the occasion of the following events: - The International Conference on Advanced Materials, Microscopy and Energy (ICAMME’19), that was held in the Faculty of Sciences University Moulay Ismail Meknes-Morocco in April 2019, it has gathered over 150 participants . This event has included different kinds of presentations given by researchers and experts from the national and international scientific community. It has covered a wide spectrum of topics. -...