TY - JOUR
T1 - Si/TiO2 tandem-junction microwire arrays for unassisted solar-driven water splitting
AU - Shaner, Matthew R.
AU - McDowell, Matthew T.
AU - Pien, Alex
AU - Atwater, Harry A.
AU - Lewis, Nathan S.
N1 - Funding Information:
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.
PY - 2016
Y1 - 2016
N2 - 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%.
AB - 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%.
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U2 - 10.1149/2.0141605jes
DO - 10.1149/2.0141605jes
M3 - Article
AN - SCOPUS:84955475991
VL - 163
SP - H261-H264
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 5
ER -