Toward Stable Solar Hydrogen Generation Using Organic Photoelectrochemical Cells
Impacto
Scholar |
Otros documentos de la autoría: Haro, Marta; Solís, Claudia; Molina, Gonzalo; Otero, Luis; Bisquert, Juan; Gimenez, Sixto; Guerrero, Antonio
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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http://dx.doi.org/10.1021/acs.jpcc.5b01420 |
Metadatos
Título
Toward Stable Solar Hydrogen Generation Using Organic Photoelectrochemical CellsAutoría
Fecha de publicación
2015-03Editor
American Chemical SocietyCita bibliográfica
HARO, Marta, et al. Toward Stable Solar Hydrogen Generation Using Organic Photoelectrochemical Cells. The Journal of Physical Chemistry C, 2015, vol. 119, no 12, p. 6488-6494.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.5b01420Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Organic photoactive materials are promising candidates for the generation of solar fuels in terms of efficiency and cost. However, their low stability in aqueous media constitutes a serious problem for technological ... [+]
Organic photoactive materials are promising candidates for the generation of solar fuels in terms of efficiency and cost. However, their low stability in aqueous media constitutes a serious problem for technological deployment. Here we present organic photocathodes for the generation of hydrogen in aqueous media with outstanding stability. The device design relies on the use of water-resistant selective contacts, which protect a P3HT:PCBM photoactive layer. An insoluble cross-linked PEDOT:PSS hole-selective layer avoids delamination of the film, and an electron-selective TiOx layer in contact with the aqueous solution electrically communicates the organic layer with the hydrogen-evolving catalyst (Pt). We developed a novel method for the synthesis of the TiOx layer compatible with low-temperature conditions. Tuning the thickness of the TiOx/Pt layer leads to a trade-off between the achievable photocurrent (∼1 mAcm–2) and the stability of the photocathode (stable hydrogen generation of 1.5 μmol h–1 cm–2 for >3 h). [-]
Publicado en
J. Phys. Chem. C, 2015, 119 (12)Derechos de acceso
Copyright © 2015 American Chemical Society
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