Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 7824-1/7 |
| Number of pages | 7 |
| Journal | Nature Communications |
| Volume | 6 |
| DOIs | |
| Publication status | Published - 2015 |
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Efficient water reduction with gallium phosphide nanowires. / Standing, A.J.; Assali, S.; Gao, L.; Verheijen, M.A.; Dam, van, A.D.; Cui, Y.; Notten, P.H.L.; Haverkort, J.E.M.; Bakkers, E.P.A.M.
In: Nature Communications, Vol. 6, 2015, p. 7824-1/7.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Efficient water reduction with gallium phosphide nanowires
AU - Standing, A.J.
AU - Assali, S.
AU - Gao, L.
AU - Verheijen, M.A.
AU - Dam, van, A.D.
AU - Cui, Y.
AU - Notten, P.H.L.
AU - Haverkort, J.E.M.
AU - Bakkers, E.P.A.M.
PY - 2015
Y1 - 2015
N2 - Photoelectrochemical hydrogen production from solar energy and water offers a clean and sustainable fuel option for the future. Planar III/V material systems have shown the highest efficiencies, but are expensive. By moving to the nanowire regime the demand on material quantity is reduced, and new materials can be uncovered, such as wurtzite gallium phosphide, featuring a direct bandgap. This is one of the few materials combining large solar light absorption and (close to) ideal band-edge positions for full water splitting. Here we report the photoelectrochemical reduction of water, on a p-type wurtzite gallium phosphide nanowire photocathode. By modifying geometry to reduce electrical resistance and enhance optical absorption, and modifying the surface with a multistep platinum deposition, high current densities and open circuit potentials were achieved. Our results demonstrate the capabilities of this material, even when used in such low quantities, as in nanowires.
AB - Photoelectrochemical hydrogen production from solar energy and water offers a clean and sustainable fuel option for the future. Planar III/V material systems have shown the highest efficiencies, but are expensive. By moving to the nanowire regime the demand on material quantity is reduced, and new materials can be uncovered, such as wurtzite gallium phosphide, featuring a direct bandgap. This is one of the few materials combining large solar light absorption and (close to) ideal band-edge positions for full water splitting. Here we report the photoelectrochemical reduction of water, on a p-type wurtzite gallium phosphide nanowire photocathode. By modifying geometry to reduce electrical resistance and enhance optical absorption, and modifying the surface with a multistep platinum deposition, high current densities and open circuit potentials were achieved. Our results demonstrate the capabilities of this material, even when used in such low quantities, as in nanowires.
U2 - 10.1038/ncomms8824
DO - 10.1038/ncomms8824
M3 - Article
C2 - 26183949
VL - 6
SP - 7824-1/7
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
ER -