Interfaces between water splitting catalysts and buried silicon junctions

The coupling of water-splitting catalysts to silicon photovoltaics enables direct solar-to-fuel conversion. Critical to the performance of such devices is the use of interfaces to protect silicon from the oxygen-evolving reaction (OER) and at the same time to provide Ohmic contact between the buried...

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Bibliographic Details
Published in:Energy & environmental science 2013, Vol.6 (2), p.532-538
Main Authors: Cox, Casandra R, Winkler, Mark T, Pijpers, Joep JH, Buonassisi, Tonio, Nocera, Daniel G
Format: Article
Language:English
Subjects:
Blocking
Catalysis
Catalysts
Conversion
Devices
Guidelines
Silicon
Silicon junctions
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Summary:The coupling of water-splitting catalysts to silicon photovoltaics enables direct solar-to-fuel conversion. Critical to the performance of such devices is the use of interfaces to protect silicon from the oxygen-evolving reaction (OER) and at the same time to provide Ohmic contact between the buried silicon junction and the immobilised OER catalyst. Presented herein are guidelines for constructing the Si|catalyst interface, which is a crucial building block for efficient direct solar-to-fuel conversion devices. We show that fluorinated-tin-oxide is an especially attractive interface for buried-junction devices.
ISSN:1754-5692
1754-5706
DOI:10.1039/c2ee23932a