Solar hydrogen production using epitaxial SrTiO[subscript 3]
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c6ee03170f.pdf
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Author(s)
Kornblum, L.
Faucher, J.
Han, M. G.
Morales-Acosta, M. D.
Zhu, Y.
Altman, E. I.
Lee, M. L.
Ahn, C. H.
Walker, F. J.
Fenning, David P
Date Issued
December 2016
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
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.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 3.0 unported license
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DOI of Published Version
https://doi.org/10.1039/C6EE03170F
