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Gacitua, M., Boutaleb, Y., Cattin, L., Abe, Y. S., Lare, Y., Soto, G., Louarn, G., Morsli, M., Rehamnia, R., del Valle, M. A., Drici, A. & Bernede, J. C. (2010) Electrochemical preparation of MoO3 buffer layer deposited onto the anode in organic solar cells. Phys. Status Solidi A-Appl. Mat. 207 1905–1911. 
Added by: Laurent Cournède (2016-03-10 21:37:32)
Type de référence: Article
DOI: 10.1002/pssa.200925602
Numéro d'identification (ISBN etc.): 1862-6300
Clé BibTeX: Gacitua2010
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Catégories: CESES, PMN
Mots-clés: electrochemical deposition, electrodeposition, Molybdenum oxide, molybdenum oxide buffer layer, organic solar cells, oxide thin-films
Créateurs: Abe, Bernede, Boutaleb, Cattin, Drici, Gacitua, Lare, Louarn, Morsli, Rehamnia, Soto, del Valle
Collection: Phys. Status Solidi A-Appl. Mat.
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Résumé     
In this work the authors have studied the advantages of using electrochemically deposited molybdenum oxide as a buffer layer in an organic bilayer heterojunction solar cell arrangement. Furthermore, it has been probed that electrochemistry provides an alternative low cost, reproducible and less laborious method to prepare thin layered deposits. The precursor solution is composed by a concentrated molybdic acid solution in a sulphuric media in order to ensure the obtainment of low reduced molybdenum species. Therefore, by means of potentiostatic techniques, ITO/molybdenum oxide transparent anodes were tested for the photovoltaic device showing improved surface properties. XDR and AFM techniques were used to characterize the morphology of the deposits. The films with optimum thickness (5 nm) are amorphous. XPS analysis indicates that the best results in solar cell performance are in hand with a heterogeneous composition of the molybdenum oxide film presenting Mo-V and Mo-VI as predominant species. The MoO3 films deposited by cyclic voltammetry are not as homogeneous as those deposited by potentiostatic technique and only Mo-VI species are present. These differences may justify the different behaviour of the solar cells using these different buffer layers. Only buffer layers deposited by potentiostatic technique allow improving the cells performances in the same way than those achieved by evaporation. (C) 2010 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim
Added by: Laurent Cournède  
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