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<dc:title xml:lang="fr">Elaboration et caractérisation des couches mines de ZnO dopées au molybdène et l'ytterbium, pour des applications photovoltaïques</dc:title>
<dcterms:alternative xml:lang="en">Preparation and characterization of Zno thin films doped molybdenum and to the ytterbium for photovoltaic applications</dcterms:alternative>
<dc:subject xml:lang="fr">ZnO:Mo</dc:subject>
<dc:subject xml:lang="fr">ZnO:Yb</dc:subject>
<dc:subject xml:lang="fr">Films minces</dc:subject>
<dc:subject xml:lang="fr">Spray pyrolyse</dc:subject>
<dc:subject xml:lang="fr">RF sputtering</dc:subject>
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<dc:subject xml:lang="fr">PL</dc:subject>
<dc:subject xml:lang="fr">Effet Hall</dc:subject>
<dc:subject xml:lang="fr">Oxyde transparent conducteur</dc:subject>
<dc:subject xml:lang="fr">Oxydes</dc:subject>
<dc:subject xml:lang="fr">Molybdènes</dc:subject>
<dc:subject xml:lang="fr">Ytterbium</dc:subject>
<dc:subject xml:lang="en">Mo-doped ZnO</dc:subject>
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<dc:subject xml:lang="en">Spray pyrolyse</dc:subject>
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<tef:elementdEntree autoriteExterne="076077659" autoriteSource="Sudoc">Oxyde de zinc</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="030964040" autoriteSource="Sudoc">Effet Hall</tef:elementdEntree>
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<tef:elementdEntree autoriteExterne="029209269" autoriteSource="Sudoc">Semiconducteurs dopés</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">Dans la perspective d’améliorer les cellules du futur, nous avons élaboré respectivement des couches minces de ZnO dopé Mo par la méthode spray pyrolyse et dopé Yb par sputtering. Quel que soit la technique utilisée, toutes ces couches sont polycristallines, transparentes avec des surfaces uniformes. De plus les mesures d’effet Hall montrent une conductivité de type n dans le cas des deux systèmes étudiés. Concernant les films minces de ZnO dopé Mo, les propriétés électriques restent potentiellement intéressantes pour des applications en photovoltaïque en tant que dopant additionnel en plus des terres rares. Quant aux films minces de ZnOYb, les résultats de mesures PL ont clairement mis en évidence un couplage optique entre ZnO et l’Yb avec l’observation d’un photon infrarouge pour un photon UV incident. Ceci suggère que le concept « down-shift » est susceptible d’être validé.</dcterms:abstract>
<dcterms:abstract xml:lang="en">In view of improving the cells of the future, we have elaborated respectively doped ZnO thin films by Mo spray pyrolysis method and doped Yb by sputtering. Whatever the technique used all these layers are polycrystalline, transparent with smooth surfaces. In addition, the Hall effect measurements show an n-type conductivity in the case of two systems studied. On thin films of ZnO doped Mo, the electrical properties are potentially interesting for photovoltaic applications as additional dopant in addition to rare earths. As for thin films ZnOYb, PL measurement results have clearly demonstrated an optical coupling between ZnO and Yb with the observation of a photon infrared photon UV incident. This suggests that the concept of "down-shift" is likely to be validated.</dcterms:abstract>
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