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 (TiO2). These photoelectrodes effected unassisted water splitting under simulated 1 Sun conditions with an open-circuit potential (EOC) of -1.5 V vs the formal potential for oxygen evolution, E0/(OH-/O2), a current density at E = E 0'(OH-/O2) of 0.78 mA cm-2, a fill factor (ff) = 0.51, and a photovoltaic-biased photoelectrochemical ideal regenerative cell efficiency of 0.6%.
| Original language | English |
|---|---|
| Pages (from-to) | H261-H264 |
| Journal | Journal of the Electrochemical Society |
| Volume | 163 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2016 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Electrochemistry
- Materials Chemistry
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Shaner, M. R., McDowell, M. T., Pien, A., Atwater, H. A., & Lewis, N. S. (2016). Si/TiO2 tandem-junction microwire arrays for unassisted solar-driven water splitting. Journal of the Electrochemical Society, 163(5), H261-H264. https://doi.org/10.1149/2.0141605jes