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     <dc:title xml:lang="fr">Cellules photovoltaïques à base d'hétérocycles pyraniques</dc:title>
     <dcterms:alternative xml:lang="en">Dyes solar cells based on pyranic heterocycles</dcterms:alternative>
     <dc:subject xml:lang="fr">Cellules photovoltaïques</dc:subject><dc:subject xml:lang="fr">optique non linéaire</dc:subject><dc:subject xml:lang="fr">Synthèse des composés organiques</dc:subject><dc:subject xml:lang="en">Dyes solar cells</dc:subject><dc:subject xml:lang="en">Non linear optic</dc:subject><dc:subject xml:lang="en">Synthesis of organic compounds</dc:subject><tef:sujetRameau><tef:vedetteRameauNomCommun>
						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027672506">Photopiles</tef:elementdEntree><tef:subdivision autoriteSource="Sudoc" type="subdivisionDeForme" autoriteExterne="027253139">Thèses et écrits académiques</tef:subdivision>
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						<tef:elementdEntree autoriteSource="Sudoc" autoriteExterne="027674266">Optique non linéaire</tef:elementdEntree><tef:subdivision autoriteSource="Sudoc" type="subdivisionDeForme" autoriteExterne="027253139">Thèses et écrits académiques</tef:subdivision>
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     <dcterms:abstract xml:lang="fr">Les composés organiques à base d'hétérocycles pyraniques peuvent être utilisé dans les cellules photovoltaïques ou dans des matériaux du domaine des télécommunications grâce à leurs propriétés en optique non linéaire. Plusieurs de ces composés ont été synthétisés, analysés et testés dans des cellules solaires à colorants. Des rendements photovoltaïques ont pu ainsi être obtenus et des modifications sur ses composés ont été effectuées afin d'obtenir une meilleure conversions de l'énergie solaire en courant électrique. </dcterms:abstract>
     <dcterms:abstract xml:lang="en">Organic compounds with pyranic heterocycles could be used in solar cells or in materials for telecommunications due tot their nonlinear optic properties. Several compounds synthesized were tested in dyes solar cells. The efficiencies of these dyes were obtained and the effect of structural modifications were studied with the goal to obtain a better efficiency.</dcterms:abstract>
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