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2016 | 130 | 1 | 133-137
Article title

Valorization of Algerian Sand for Photovoltaic Application

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EN
Abstracts
EN
Extracting quartz from sand, as well as extracting silicon from quartz requires knowledge of the physical and chemical properties of quartz found in the sand. In this work the chemical composition, the crystallographic phase, crystal system, space group, unit cell parameters, the absorption bands, the granulometric analysis and the microscopic observations of quartz in the sand from Mostaganem (Algeria) region have been carried out using X-ray fluorescence, X-ray diffraction, infrared spectroscopy, sifting, optical and scanning electron microscopy in order to determine the rate and the nature the crystallinity of its various components and to discover a layer rich in silica, containing a sufficient reserve to feed a unit manufacturing pure silicon starting from silica. The study is driven by current economic importance of the silicon application in the field of photovoltaic solar cells. The X-ray fluorescence indicates that Mostaganem sand has got a very good purity (99.5% silica). The crystallographic parameters of Mostaganem sand have been determined through analysis of X-ray diffraction. The following parameters were found, hexagonal crystal system, space group P3221, unit cell parameters: a=b=4.9030 Å, c=5.3999 Å. The infrared absorption spectrum of studied sand exhibits absorption bands characterizing the SiO₂ compound, due to Si-O-Si and Si-O aggregates and others. The granulometric analysis determines the percentage of the various fraction of the grain. The microscopy observation gives the shape of the grain. The results show finally that Mostaganem sand has got good proprieties for the photovoltaic application.
Keywords
EN
Year
Volume
130
Issue
1
Pages
133-137
Physical description
Dates
published
2016-07
References
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv130n1033kz
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