期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 10, 期 1, 页码 377-382出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ee03170f
关键词
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资金
- NSF [DMR1309868]
- MRSEC (CRISP) [DMR-1119826]
- MIT Energy Initiative seed fund
- MIT/Battelle postdoctoral program
- ARPA-E Award [DE-AR0000508]
- Materials Science and Engineering Divisions, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-98CH10886]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1309868] Funding Source: National Science Foundation
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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