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Jiang, T., Bujoli-Doeuff, M., Gautron, E., Farre, Y., Cario, L., Pellegrin, Y., Boujtita, M., Odobel, F. & Jobic, S. (2018) Cu2O@CuO core-shell nanoparticles as photocathode for p-type dye sensitized solar cell. J. Alloy. Compd. 769 605–610.
Added by: Richard Baschera (2018-12-20 08:36:32) Last edited by: Richard Baschera (2018-12-20 08:37:44) |
| Type de référence: Article DOI: 10.1016/j.jallcom.2018.07.328 Numéro d'identification (ISBN etc.): 0925-8388 Clé BibTeX: Jiang2018 Voir tous les détails bibliographiques  |
Catégories: IMN, INTERNATIONAL, MIOPS, PMN Mots-clés: composite, core-shell nanoparticles, cu2o, cuo electrodes, Dye sensitized solar cell, efficient, Hydrothermal synthesis, nio, performance, photoanode, photocathode, separation, Water Créateurs: Boujtita, Bujoli-Doeuff, Cario, Farre, Gautron, Jiang, Jobic, Odobel, Pellegrin Collection: J. Alloy. Compd. |
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Cu2O@CuO core-shell nanoparticles were synthesized via a facile precipitation-thermal oxidation method consisting in the preparation of Cu2O nanoparticles in solution followed by a post-treatment at 300 degrees C, 350 degrees C or 400 degrees C in air. From HRTEM micrographs, it was evidenced that Cu2O particles were uniformly covered by a 5 nm thick CuO layer to form a core-shell structure. This shell may be viewed as a passivating layer that overcomes the natural chemical instability of Cu2O towards electrolytes for instance. The as-obtained Cu2O@CuO nanoparticles were characterized by X-ray photoelectron spectroscopy and electrochemical impedance spectroscopy. Both techniques concluded to the p-type conductivity of the Cu2O@CuO hetero-structures. These nanoparticles were then deposited as a film on a FTO glass by screen printing and used after sintering as photocathodes for p-DSSCs. Photovoltaic activity was confirmed with DPP-NDI dye as sensitizer and tris(4,4'-ditert-butyl-2,2'-bipyridine) cobalt (III/II) as redox mediator. (C) 2018 Elsevier B.V. All rights reserved.
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