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Development of Chalcogenide Thin Film Materials for Photoelectrochemical Hydrogen Production

Published online by Cambridge University Press:  07 October 2013

Nicolas Gaillard ,
Dixit Prasher ,
Jess Kaneshiro ,
Stewart Mallory  and
Marina Chong
Nicolas Gaillard
Affiliation:
Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
Dixit Prasher
Affiliation:
Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
Jess Kaneshiro
Affiliation:
Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
Stewart Mallory
Affiliation:
Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
Marina Chong
Affiliation:
Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, HI 96822, USA
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Abstract

In the present communication, we report our efforts to integrate chalcogenide-based photoelectrochemical (PEC) materials into a standalone device capable of water-splitting using sunlight as the only source of energy. More specifically, the PEC performances of copper gallium diselenide are presented. First, a brief introduction to the material microstructural characteristics is presented. Then, the PEC properties are discussed, including incident-photonto-current efficiency (>60% in the visible), Faradaic efficiency (uncatalyzed, 86%) and durability (400 hours). Finally, we report the solar-to-hydrogen benchmark efficiency (3.7%) of a device made of a CuGaSe2 photocathode and a-Si solar cells measured in a 2-electrode configuration using a RuO2 counter electrode.

Keywords

photochemicalSustainabilityphotovoltaic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1558: Symposium Z – Nanotechnology and Sustainability , 2013 , mrss13-1558-z02-07
Copyright
Copyright © Materials Research Society 2013 

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References

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