Solar hydrogen production using epitaxial SrTiO[subscript 3]

Author(s)
Kornblum, L.; Faucher, J.; Han, M. G.; Morales-Acosta, M. D.; Zhu, Y.; ... Show more
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Abstract
We demonstrate an oxide-stabilized III-V photoelectrode architecture for solar fuel production from water in neutral pH. For this tunable architecture we demonstrate 100% Faradaic efficiency for hydrogen evolution, and incident photon-to-current efficiencies (IPCE) exceeding 50%. High IPCE for hydrogen evolution is a consequence of the low-loss interface achieved via epitaxial growth of a thin oxide on a GaAs solar cell. Developing optimal energetic alignment across the interfaces of the photoelectrode using well-established III-V technology is key to obtaining high performance. This advance constitutes a critical milestone towards efficient, unassisted fuel production from solar energy.
Date issued
2016-12
URI
http://hdl.handle.net/1721.1/120012
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
Energy & Environmental Science
Publisher
Royal Society of Chemistry (RSC)
Citation
Kornblum, L., D. P. Fenning, J. Faucher, J. Hwang, A. Boni, M. G. Han, M. D. Morales-Acosta, et al. “Solar Hydrogen Production Using Epitaxial SrTiO[subscript 3] on a GaAs Photovoltaic.” Energy & Environmental Science 10, no. 1 (2017): 377–382. © The Royal Society of Chemistry 2017
Version: Final published version
ISSN
1754-5692
1754-5706
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