Published 2016
| Supplemental Material + Published
Journal Article
Open
Si/TiO_2 Tandem-Junction Microwire Arrays for Unassisted Solar-Driven Water Splitting
Chicago
Abstract
Tandem-junction microwire array photoelectrodes have been fabricated by coating np^+-Si radial homojunction microwire arrays sequentially with fluorine-doped tin oxide (FTO) and titanium dioxide (TiO_2). These photoelectrodes effected unassisted water splitting under simulated 1 Sun conditions with an open-circuit potential (E_(oc)) of −1.5 V vs the formal potential for oxygen evolution, E^(0′)(OH^−/O_2), a current density at E = E^(0′)(OH^−/O_2) of 0.78 mA cm^(−2), a fill factor ( ff ) = 0.51, and a photovoltaic-biased photoelectrochemical ideal regenerative cell efficiency of 0.6%.
Additional Information
© 2016 The Electrochemical Society. Manuscript submitted October 23, 2015; revised manuscript received December 17, 2015. Published January 15, 2016. The authors acknowledge Stefan Omelchenko for assistance with the XRD measurements, John Lloyd for discussions about the cTLM measurements and Dr. Shawn Chatman for providing the Xe arc lamp spectral irradiance data. This material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award Number DE-SC0004993. M.R.S. acknowledges the Resnick Sustainability Institute for a graduate fellowship.Attached Files
Published - J._Electrochem._Soc.-2016-Shaner-H261-4.pdf
Supplemental Material - README.txt
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Additional details
- Eprint ID
- 64889
- Resolver ID
- CaltechAUTHORS:20160301-075443518
- Department of Energy (DOE)
- DE-SC0004993
- Resnick Sustainability Institute
- Created
-
2016-03-01Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Resnick Sustainability Institute, JCAP