2024-03-29T04:54:50Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1588512024-01-09T10:08:07Zcom_10234_2507com_10234_9col_10234_6973
00925njm 22002777a 4500
dc
Haro, Marta
author
Solís, Claudia
author
Molina, Gonzalo
author
Otero, Luis
author
Bisquert, Juan
author
Gimenez, Sixto
author
Guerrero, Antonio
author
2015-03
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).
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.
http://hdl.handle.net/10234/158851
http://dx.doi.org/10.1021/acs.jpcc.5b01420
Hydrogen
Photoelectrochemical cells
Solar power generation
Hydrogen generations
Photoactive materials
Toward Stable Solar Hydrogen Generation Using Organic Photoelectrochemical Cells