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Préparation électrochimique et caractérisation de couches nanostructurées de semi-conducteurs de type p pour cellules photovoltaïques hybrides

Abstract : The objective of this thesis was the electrochemical deposition (ECD) of p-type semiconductors forthe fabrication of p-Dye Sensitized Solar Cells (p-DSSCs). The electrodeposition method remained unexploredfor the p-DSSC applications. The best conditions for ECD of nickel oxide layers with a controlled thickness havebeen defined. Nickel oxide has been deposited in water medium, in ethanol, in dimethyl sulfoxide (DMSO)medium and in a mixture of DMSO/water solvent. The layers have been characterized by XRD, Ramanspectroscopy, SEM, optical measurements… then have been tested as a photocathode in p-DSSCs. The cuprousoxide (Cu2O) electrodeposition in an aqueous bath has also been investigated. The photovoltaic efficiency of thevarious prepared layers has been evaluated in p-DSSCs. We have also prepared inverse opal organized structureswith a perfectly defined macropore organization and size using a macrosphere polystyrene template. Finally, wehave explored the ECD of a copper delafossite CuFeO2 in DMSO medium.
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Sana Koussi-Daoud. Préparation électrochimique et caractérisation de couches nanostructurées de semi-conducteurs de type p pour cellules photovoltaïques hybrides. Chimie analytique. Université Pierre et Marie Curie - Paris VI, 2016. Français. ⟨NNT : 2016PA066505⟩. ⟨tel-01523449⟩

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