PlumX Metrics
Embed PlumX Metrics

Tuning the surface Fermi level on p-type gallium nitride nanowires for efficient overall water splitting

Nature Communications, ISSN: 2041-1723, Vol: 5, Issue: 1, Page: 3825
2014
  • 238
    Citations
  • 0
    Usage
  • 227
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Most Recent News

Solar-to-hydrogen efficiency of more than 9% in photocatalytic water splitting

Nature, Published online: 04 January 2023; doi:10.1038/s41586-022-05399-1 Photocatalytic water splitting with a high solar-to-hydrogen efficiency of more than nine per cent is achieved using pure water, concentrated solar light and an indium gallium nitride photocatalyst.

Article Description

Solar water splitting is one of the key steps in artificial photosynthesis for future carbon-neutral, storable and sustainable source of energy. Here we show that one of the major obstacles for achieving efficient and stable overall water splitting over the emerging nanostructured photocatalyst is directly related to the uncontrolled surface charge properties. By tuning the Fermi level on the nonpolar surfaces of gallium nitride nanowire arrays, we demonstrate that the quantum efficiency can be enhanced by more than two orders of magnitude. The internal quantum efficiency and activity on p-type gallium nitride nanowires can reach ∼51% and ∼4.0mol hydrogen h g, respectively. The nanowires remain virtually unchanged after over 50,000 μmol gas (hydrogen and oxygen) is produced, which is more than 10,000 times the amount of photocatalyst itself (∼4.6 μmol). The essential role of Fermi-level tuning in balancing redox reactions and in enhancing the efficiency and stability is also elucidated. © 2014 Macmillan Publishers Limited.

Bibliographic Details

M. G. Kibria; S. Zhao; F. A. Chowdhury; Q. Wang; H. P. T. Nguyen; M. L. Trudeau; H. Guo; Z. Mi

Springer Science and Business Media LLC

Chemistry; Biochemistry, Genetics and Molecular Biology; Physics and Astronomy

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know