Electrodeposition of NiO films from various solvent electrolytic solutions for dye sensitized solar cell application

S. Koussi-Daoud; Y. Pellegrin; F. Odobel; B. Viana; T. Pauporté

doi:10.1117/12.2252251

24 February 2017 Electrodeposition of NiO films from various solvent electrolytic solutions for dye sensitized solar cell application

S. Koussi-Daoud, Y. Pellegrin, F. Odobel, B. Viana, T. Pauporté

Author Affiliations +

Proceedings Volume 10105, Oxide-based Materials and Devices VIII; 1010526 (2017) https://doi.org/10.1117/12.2252251
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We have investigated the preparation of NiO layers by cathodic electrodeposition in various organic-based solvents, namely ethanol, dimethyl sulfoxide (DMSO), DMSO/2 vol.% H₂O and DMSO/25 vol.% H₂O mixtures. The layers were formed from the electrochemical reduction of nickel nitrate precursor. We show that, depending on the solvent used, various nickel compounds were deposited. In the case of ethanol, a transparent precursor layer was obtained that was transformed into NiO after an annealing treatment at 300°C. For DMSO and DMSO with 2 volume % of H2O, adherent, well-covering, mesoporous and rather thick NiO layers were obtained after an annealing treatment at 450°C. These layers, after growth, contained nickel oxide or hydroxide, metallic nickel and DMSO. The solvent acted as a blowing agent, being included in the deposit and giving rise to a mesoporous film after its elimination by thermal annealing. These porous layers of p-type oxide have been successfully sensitized by a push-pull dye (P1 dye) and showed photocurrent generation and an open circuit voltage (V_oc) up to 167 mV in p-type dye-sensitized solar cells (p-DSSCs). For DMSO with 25 volume % of H₂O, the deposited layers contained more metallic nickel and were dense even after annealing. They were unsuitable in p-DSSCs.

Citation Download Citation

S. Koussi-Daoud, Y. Pellegrin, F. Odobel, B. Viana, and T. Pauporté "Electrodeposition of NiO films from various solvent electrolytic solutions for dye sensitized solar cell application", Proc. SPIE 10105, Oxide-based Materials and Devices VIII, 1010526 (24 February 2017); https://doi.org/10.1117/12.2252251

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