| Texto completo | |
| Autor(es): |
Congiu, Mirko
;
Bonomo, Matteo
;
De Marco, Maria Letizia
;
Dowling, Denis P.
;
Di Carlo, Aldo
;
Dini, Danilo
;
Graeff, Carlos F. O.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMISTRYSELECT; v. 1, n. 11, p. 2808-2815, JUL 16 2016. |
| Citações Web of Science: | 8 |
| Resumo | |
We proposed a novel application of cobalt sulfide (CoS) in the configuration of transparent thin film as anode in p-type dyesensitized solar cell (p-DSC). The anodes here considered have been prepared using a water-based method that is suitable for the large scale production of large-area electrodes. The photoactive cathodes of the p-DSC were mesoporous nickel oxide (NiO) thin films deposited via rapid discharge sintering. The NiO electrodes were sensitized with the benchmark dye erythrosine B (ERY), while the couple I-/I3(-) was the redox mediator. The CoS anodes showed higher electrocatalytic efficiency in comparison with the commonly used platinized Fluorine-doped Tin Oxide (Pt-FTO). This was determined by means of electrochemical impedance spectroscopy of CoS based dummy cells, with CoS showing a lower charge-transfer resistance with respect to Pt-FTO. The overall conversion efficiency of the p-DSC employing ERY-sensitized NiO as photoactive cathode and CoS anode was 0.026 %, a value very close to that obtained with PtFTO anodes (0.030 %). The external quantum efficiency spectra of the p-DSCs with CoS anodes were similar to those obtained with Pt-FTO anodes under illumination with AM 1.5 solar simulator. (AU) | |
| Processo FAPESP: | 13/07396-7 - Novos Materiais para Células Solares Sensibilizadas por Corante |
| Beneficiário: | Mirko Congiu |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 13/25028-5 - Avaliação global e otimização de células sensibilizadas e híbridas |
| Beneficiário: | Carlos Frederico de Oliveira Graeff |
| Modalidade de apoio: | Auxílio à Pesquisa - Pesquisador Visitante - Internacional |
| Processo FAPESP: | 08/57872-1 - Instituto Nacional de Ciências dos Materiais em Nanotecnologia |
| Beneficiário: | Elson Longo da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |