Enhanced photoelectrochemical hydrogen production from silicon nanowire array photocathode.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 22142272.
- Also identified by DOI 10.1021/nl203564s.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Herein we report that silicon nanowires (SiNWs) fabricated via metal-catalyzed electroless etching yielded a photoelectrochemical hydrogen generation performance superior to that of a planar Si, which is attributed to a lower kinetic overpotential due to a higher surface roughness, favorable shift in the flat-band potential, and light-trapping effects of the SiNW surface. The SiNW photocathode yielded a photovoltage of 0.42 V, one of the highest values ever reported for hydrogen generation on p-type Si/electrolyte interfaces.
Medical subject headings
- Electrodes
- Hydrogen
- Silicon
- Titanium