Rational design of a neutral pH functional and stable organic photocathode

Laia Francàs, Eric Burns, Ludmilla Steier, Hyojung Cha, Lluís Solà-Hernández, Xiaoe Li, Pabitra Shakya Tuladhar, Roger Bofill, Jordi García-Antón, Xavier Sala, James R. Durrant

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


In this work we lay out design guidelines for catalytically more efficient organic photocathodes achieving stable hydrogen production in neutral pH. We propose an organic photocathode architecture employing a NiO hole selective layer, a PCDTBT:PCBM bulk heterojunction, a compact TiO2 electron selective contact and a RuO2 nanoparticle catalyst. The role of each layer is discussed in terms of durability and function. With this strategically designed organic photocathode we obtain stable photocurrent densities for over 5 h and discuss routes for further performance improvement.
Original languageEnglish (US)
Pages (from-to)5732-5735
Number of pages4
JournalChemical Communications
Issue number45
StatePublished - 2018
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR2015-CRG4-2572
Acknowledgements: We kindly thank the laboratory of photonics and interfaces (EPFL, Switzerland) for the permission to use their ALD setup. We acknowledge financial support from the European Research Council (project Intersolar 291482), K.A.U.S.T. (Project OSR2015-CRG4-2572), and MINECO/FEDER (CTQ2015-64261-R). L. F. thanks the EU for a Marie Curie fellowship (658270). J. G.-A. acknowledges the Serra Hunter Program.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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