Solar hydrogen production using epitaxial SrTiO3 on a GaAs photovoltaic

L. Kornblum; D. P. Fenning; J. Faucher; J. Hwang; A. Boni; M. G. Han; M. D. Morales-Acosta; Y. Zhu; E. I. Altman; M. L. Lee; C. H. Ahn; F. J. Walker; Y. Shao-Horn

doi:10.1039/c6ee03170f

Solar hydrogen production using epitaxial SrTiO₃ on a GaAs photovoltaic

L. Kornblum
, D. P. Fenning
, J. Faucher
, J. Hwang
, A. Boni
, M. G. Han
, M. D. Morales-Acosta
, Y. Zhu
, E. I. Altman
, M. L. Lee
, C. H. Ahn
, F. J. Walker
, Y. Shao-Horn

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Pages (from-to)	377-382
Number of pages	6
Journal	Energy and Environmental Science
Volume	10
Issue number	1
DOIs	https://doi.org/10.1039/c6ee03170f
State	Published - Jan 2017

ASJC Scopus subject areas

Environmental Chemistry
Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Pollution

Online availability

10.1039/c6ee03170f

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Cite this

@article{df5ab5933cc24fa1b1867be99308cc7f,

title = "Solar hydrogen production using epitaxial SrTiO3 on a GaAs photovoltaic",

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.",

author = "L. Kornblum and Fenning, \{D. P.\} and J. Faucher and J. Hwang and A. Boni and Han, \{M. G.\} and Morales-Acosta, \{M. D.\} and Y. Zhu and Altman, \{E. I.\} and Lee, \{M. L.\} and Ahn, \{C. H.\} and Walker, \{F. J.\} and Y. Shao-Horn",

note = "The authors (CHA, LK, MDAM, and FJW) acknowledge support from NSF DMR1309868 and EIA acknowledges support from MRSEC DMR-1119826 (CRISP). Support for MIT research is acknowledged from the MIT Energy Initiative seed fund and the Cooperative Agreement between the Masdar Institute of Science and Technology, Abu Dhabi, UAE and MIT, Reference Number 02/MI/MIT/CP/11/07633/GEN/G/00. DPF acknowledges the support of the MIT/Battelle postdoctoral program. JF and MLL acknowledge support from ARPA-E Award DE-AR0000508. The work at Brookhaven National Laboratory was supported by the Materials Science and Engineering Divisions, Office of Basic Energy Sciences, of the US Department of Energy, under Contract No. DE-AC02-98CH10886. The authors are grateful to Nir Pour for his expertise in preparing Fig. 1. The authors also thank Dr Ifan E. L. Stephens for discussions and assistance in measuring Pt wire, and Dr B. R. Lukanov for his contributions to the early stages of this project.",

year = "2017",

month = jan,

doi = "10.1039/c6ee03170f",

language = "English (US)",

volume = "10",

pages = "377--382",

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publisher = "Royal Society of Chemistry",

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T1 - Solar hydrogen production using epitaxial SrTiO3 on a GaAs photovoltaic

AU - Kornblum, L.

AU - Fenning, D. P.

AU - Faucher, J.

AU - Hwang, J.

AU - Boni, A.

AU - Han, M. G.

AU - Morales-Acosta, M. D.

AU - Zhu, Y.

AU - Altman, E. I.

AU - Lee, M. L.

AU - Ahn, C. H.

AU - Walker, F. J.

AU - Shao-Horn, Y.

N1 - The authors (CHA, LK, MDAM, and FJW) acknowledge support from NSF DMR1309868 and EIA acknowledges support from MRSEC DMR-1119826 (CRISP). Support for MIT research is acknowledged from the MIT Energy Initiative seed fund and the Cooperative Agreement between the Masdar Institute of Science and Technology, Abu Dhabi, UAE and MIT, Reference Number 02/MI/MIT/CP/11/07633/GEN/G/00. DPF acknowledges the support of the MIT/Battelle postdoctoral program. JF and MLL acknowledge support from ARPA-E Award DE-AR0000508. The work at Brookhaven National Laboratory was supported by the Materials Science and Engineering Divisions, Office of Basic Energy Sciences, of the US Department of Energy, under Contract No. DE-AC02-98CH10886. The authors are grateful to Nir Pour for his expertise in preparing Fig. 1. The authors also thank Dr Ifan E. L. Stephens for discussions and assistance in measuring Pt wire, and Dr B. R. Lukanov for his contributions to the early stages of this project.

PY - 2017/1

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N2 - 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.

AB - 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.

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