Organic photoelectrochemical cells with quantitative photocarrier conversion
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Other documents of the author: Guerrero, Antonio; Haro, Marta; Bellani, Sebastiano; Antognazza, Maria Rosa; Meda, Laura; Gimenez, Sixto; Bisquert, Juan
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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Title
Organic photoelectrochemical cells with quantitative photocarrier conversionAuthor (s)
Date
2014Publisher
Royal Society of ChemistryISSN
1754-5692; 1754-5706Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/submittedVersionSubject
Abstract
Efficient solar-to-fuel conversion could be a cost-effective way to power the planet using sunlight. Herein, we demonstrate that Organic Photoelectrochemical Cells (OPECs) constitute a versatile platform for the ... [+]
Efficient solar-to-fuel conversion could be a cost-effective way to power the planet using sunlight. Herein, we demonstrate that Organic Photoelectrochemical Cells (OPECs) constitute a versatile platform for the efficient production of solar fuels. We show that the photogenerated carriers at the organic active layer can be quantitatively extracted to drive photoelectrochemical reactions at the interface with a liquid solution. Indeed, an unprecedented photocurrent of 4 mA cm−2 is extracted for an OPEC device, comparable to that of a solid-state device with similar optical properties. Through the careful choice of the selective contact and the redox couple in the liquid medium, we can tune the energetics of the system and activate either oxidative or reductive chemistry. The design rules to drive the desired electrochemical reaction are provided based on a comprehensive study of the energetic aspects of OPEC configuration. Finally, we demonstrate that OPEC devices effectively produce hydrogen in acetonitrile when a cobaloxime based homogeneous catalyst is present in the solution, and HCl is used a source of protons. [-]
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Energy & Environmental Science, 2014, vol. 7, núm. 11Rights
This journal is © The Royal Society of Chemistry 2014
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