Publications (32)
ARTICLE
Optimization of Contents of Three Raw Clay Materials in Formulation of a Porcelain
Youssouf Sawadogo, Moustapha Sawadogo, Moussa Ouédraogo, Mohamed Seynou, Gisèle Lecomte-Nana, Philippe Blanchart , Moussa Gomina, Lamine Zerbo,
Formulation of traditional hard porcelain generally requires 50% kaolin, 25% silica and 25% feldspar. Four porcelains formulation using the casting me thod, were prepared with different percentages of kaolinitic clay, sand and Pegmatite referenced respectively NONG, SAB and PEG. The physico-chemical, mechanical and mineralogical characteristic(...)
Raw Minerals, Porcelain, Characterization, Chemical Durability, Phase Transformations
ARTICLE
Development and Characterization of Geopolymers Based on a Kaolinitic Clay
Soungalo Ouattara, Brahima Sorgho, Moustapha Sawadogo, Youssouf Sawadogo, Mohamed Seynou, Philippe Blanchart, Moussa Gomina, Lamine Zerbo
Geopolymers today constitute an alternative to be considered with the aim, not of completely replacing cement, but of widening the possibilities available at the time of decision-making because this type of clay-based binder has a low impact environmental and thermal compared to Portland cement. The methods used to obtain eco-friendly building(...)
Clay, Development, Geopolymer, Characterization, Construction
ARTICLE
Optimization of Mo/Cu(In, Ga)Se2/CdS/ZnO Hetero-Junction Solar Cell Performance by Numerical Simulation with SCAPS-1D
Adama Zongo, Daouda Oubda, Soumaïla Ouédraogo, Marcel Bawindsom Kébré, Alain Diasso, Issiaka Sankara, Boureima Traore, François Zougmoré, Zacharie Koalga and Frédéric Ouattara
The paper presents a one-dimensional simulation study of chalcopyrite Cu(In,Ga)Se2 (CIGS) solar cells, where the effects of the variation of CIGS, CdS, and ZnO layers are presented. Additionlly the influence of the variation of doping and the defects density of shallow uniform donors and acceptors types are also presented. The analyse of the s(...)
Numerical simulation, SCAPS-1D, CIGS solar cell
ARTICLE
Assessment of different sands potentiality to formulate an effective thermal energy storage material (TESM)
Bagré Boubou , Muritala Ibrahim Kolawole, Boukar Makinta, Daho Tizane, Nebié Jacques,Rabani Adamou, Béré Antoine
This paper presents a review of solid particles size effect on thermocline storage performance for Concentrating Solar Power (CSP) storage systems. After an overview on the different process to store thermal energy we found that a particle size of 2cm diameter is better to achieve a good sensible heat storage performance within a system call d(...)
Dual medium thermocline, thermalstability, Concentrated Solar Power, Storageeffectiveness, Sand
ARTICLE
Propriétés mécanique, hydrique et thermique de briques en terre crue amendées aux coques d’arachide
Ouanmini Bobet, Mohamed Seynou, Lamine Zerbo, Halidou Bamogo, Issiaka Sanou, Moustapha Sawadogo
Des briques de terre crue élaborées à base d’une argile locale ont été amendées aux coques d’arachide pour améliorer leur performance mécanique et leur durabilité. Les coques d’arachide ont été découpées à trois longueurs respectives de 0,33 cm, 1cm et 3cm et ajoutées à la matrice argileuse à des teneurs allant de 1,8 à 3 % en masse. Les briqu(...)
adobe, coques d’arachide, résistance mécanique, conductivité thermique, érosion
ARTICLE
Comprehensive Analysis of CuIn1-xGaxSe2 Based Solar Cells with Zn1-yMgyO Buffer Layer
Ouédraogo, S. , Kébré, M. , Ngoupo, A. , Oubda, D. and Zougmoré, F.
The development of cadmium-free CIGS solar cells with high conversion efficiency is crucial due to the toxicity of cadmium. Zinc-based buffer layers seem to be the most promising. In this paper, a numerical analysis using SCAPS-1D software was used to explore the Zn(Mg,O) layer as an alternative to the toxic CdS layer. The effect of several pr(...)
Device Modeling, Zn(Mg, O), Cu(In, Ga)Se2, Interface Sates
ARTICLE
Performance Enhancement Strategy of Ultra-Thin CIGS Solar Cells
Ouédraogo, S., Traoré, B., Kébré, M. B., Oubda, D., Zongo, A., Sankara, I. & Zougmoré, F.
In this article, numerical modeling and simulation using SCAPS-1D software has been used to explore the performance of CIGS-based solar cells when some parameters are modified. Starting from a baseline model that rigorously reproduces the experimental results, the absorber properties such as defect density, band-gap and acceptor concentration(...)
Cu(In, Ga)Se2, Band-Gap, Defect Density
ARTICLE
Hydromechanical Behavior of Low-Swelling Soils Compacted at Low Water Content: Laboratory Study
Gandema, S., Kebré, M.B. & Naon, B.
Fine unsaturated soils are used in many applications, particularly in road infrastructure and in construction. These materials undergo deformations according to the stresses to which they are subjected. The purpose of this paper is to study the influence of hydromechanical stresses on the behavior of low swelling soils compacted at low water c(...)
Unsaturated Soil, Compacted, Swelling, Low Water Content, Wetting, Oedometer
ARTICLE
Characterization of Peanut Shells for Their Valorization in Earth Brick.
Ouanmini Bobet, Sory Nassio, Mohamed Seynou, Bakiono Remy, Lamine Zerbo, Issiaka Sanou, Moustapha Sawadogo, Younoussa Millogo, Escadeillas Gilles
Peanut shells from Burkina Faso were characterized using mineralogical, microstructural and chemical methods to perform its possibility to be used as reinforce in adobe bricks. It consists of cellulose (48 wt%), hemicellulose (3 wt%) and lignin (28 wt%). The peanut shells were characterized by high porosity and showed water absorption around 1(...)
Agricultural Wastes, Peanut Shells, Thermal Conductivity, Adobes, Durability
ARTICLE
Required CIGS and CIGS/Mo Interface Properties for High-Efficiency Cu(In, Ga)Se2 Based Solar Cells
Ouédraogo, S. , Kébré, M. , Ngoupo, A. , Oubda, D. , Zougmoré, F. and Ndjaka, J.
In this work, we have modeled and simulated the electrical performance of CIGS thin-film solar cell using one-dimensional simulation software (SCAPS-1D). Starting from a baseline model that reproduced the experimental results, the properties of the absorber layer and the CIGS/Mo interface have been explored, and the requirements for high-effic(...)
Cu(In, Ga)Se2, Band-Gap, Acceptor Density, Defect Density
ARTICLE
Numerical study on heat and mass transfers on a CEB (compressed earth blocks) wall in a sahelian context
Kabré, S., Kebré, M. B., Ouédraogo, S., Naon, B., Koalaga, Z. & Zougmoré, F.
Numerical modelling of coupled heat and mass transfer within a CEBs wall is presented. Based on Luikov's work, a mathematical modelling of the transfers mechanisms has been established. Temperature and moisture content were chosen as the main way of transfer. A numerical approach was applied (finite element method). The implementation of the m(...)
mass transfer, CEBs, coupled, main way of transfer, spatiotemporal
ARTICLE
Characterization and use of raw materials from Burkina Faso in porcelain formulations ; Results in Materials
Youssouf Sawadogo, Lamine Zerbo, Moustapha Sawadogo, Mohamed Seynou, Moussa Gomina, Philippe Blanchart
The use of three mineral materials from Burkina Faso in the formulation of porcelains has been studied. The characterization results showed that the clay NONG contains kaolinite (62%), illite (18%), quartz (17%) and rutile (1%). The pegmatite PEG contains albite (17%), muscovite (44%) and quartz (34%). The sand SAB is mainly composed of quartz(...)
Clay, Characterization, Formulation, Sintering, porcelain
ARTICLE
Numerical Characterization of Cu(In,Ga)Se2 Solar Cells Using Capacitance-Voltage and Capacitance-Frequency Characteristics
Daouda Oubda, Marcel B. Kebré, Soumaïla Ouédraogo, François Zougmoré, Frédéric Ouattara, Zacharie Koalga
The paper presents the effects of buffer layer thickness, operating temperature, and series resistances on the capacitance-voltage and capacitance-frequency (C-f) characteristics of the standard ZnO/CdS/OVC/Cu(In,Ga)Se2/Mo thin film solar cells.
The numerical simulation tool used is a one dimensional program: Solar Cell Capacitance Simulator(...)
Buffer layer; Operating temperature; Rs; Recombination rate; Electrical field intensity; Capacitance value.
ARTICLE
Numerical Simulation of Cu(In,Ga)Se2 Solar Cells Performances
Daouda Oubda, Marcel Bawindsom Kébré, François Zougmoré, Donatien Njomo, Frédéric Ouattara
This paper presents a numerical characterization of copper-indium-gallium-diselenide thin film solar cells using one dimensional simulation program (SCAPS-1D). We have performed an optimization of the performances of the standard Mo/Cu(In,Ga)Se2/CdS/ZnO solar cells using current-voltage and quantum efficiency methods. With a CuIn0.7Ga0.3Se2 ab(...)
Mots clés non renseignés
ARTICLE
Optimization of copper indium gallium di-selenide (CIGS) based solar cells by back grading
S. Ouédraogo, R. Sam, F. Ouédraogo, M. B. Kebré, JM. Njaka, F Zougmoré
We performed modeling and simulation of Cu(In,Ga)Se2 (CIGS) thin film solar cell, using SCAPS-1D device simulator, and we especially investigated the influence of absorber back surface region grading. The band-gap in the back surface region, as well as the thickness of the back surface grading layer, were varied to achieve the optimal performa(...)
Cu(In, simulation, back-grading