Slash Boxes

SoylentNews is people

posted by Fnord666 on Tuesday September 11 2018, @10:14PM   Printer-friendly
from the let-there-be-light-energy dept.

Golden sandwich could make the world more sustainable

Scientists have developed a photoelectrode that can harvest 85 percent of visible light in a 30 nanometers-thin semiconductor layer between gold layers, converting light energy 11 times more efficiently than previous methods.

[...] In the study published in Nature Nanotechnology, the research team sandwiched a semiconductor, a 30-nanometer titanium dioxide thin-film, between a 100-nanometer gold film and gold nanoparticles to enhance light absorption. When the system is irradiated by light from the gold nanoparticle side, the gold film worked as a mirror, trapping the light in a cavity between two gold layers and helping the nanoparticles absorb more light.

To their surprise, more than 85 percent of all visible light was harvested by the photoelectrode, which was far more efficient than previous methods. Gold nanoparticles are known to exhibit a phenomenon called localized plasmon resonance which absorbs a certain wavelength of light. "Our photoelectrode successfully created a new condition in which plasmon and visible light trapped in the titanium oxide layer strongly interact, allowing light with a broad range of wavelengths to be absorbed by gold nanoparticles," says Hiroaki Misawa.

Enhanced water splitting under modal strong coupling conditions (DOI: 10.1038/s41565-018-0208-x) (DX)

Original Submission

This discussion has been archived. No new comments can be posted.
Display Options Threshold/Breakthrough Mark All as Read Mark All as Unread
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
  • (Score: 2) by bob_super on Tuesday September 11 2018, @11:12PM (3 children)

    by bob_super (1357) on Tuesday September 11 2018, @11:12PM (#733381)

    Well, the Japanese are are the forefront when it comes to celibacy, incel, and low birth rates, so it makes sense to find other outlets for all the gold they don't give each other.

    Starting Score:    1  point
    Karma-Bonus Modifier   +1  

    Total Score:   2  
  • (Score: 0) by Anonymous Coward on Tuesday September 11 2018, @11:32PM (1 child)

    by Anonymous Coward on Tuesday September 11 2018, @11:32PM (#733386)

    Is that an attempt at humor?

  • (Score: -1, Troll) by Anonymous Coward on Tuesday September 11 2018, @11:52PM

    by Anonymous Coward on Tuesday September 11 2018, @11:52PM (#733393)

    That's funny coming from a pimply faced, basement dwelling, soylentnewser that has no gold.