Amorphous TiO <sub>2</sub> coatings stabilize Si, GaAs, and GaP photoanodes for efficient water oxidation

DOI Web Site 29 Citations
  • Shu Hu
    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
  • Matthew R. Shaner
    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
  • Joseph A. Beardslee
    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
  • Michael Lichterman
    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.
  • Bruce S. Brunschwig
    Beckman Institute and Molecular Materials Research Center, California Institute of Technology, Pasadena, CA 91125, USA.
  • Nathan S. Lewis
    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.

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Description

<jats:title>Keeping semiconductors safe from harm</jats:title> <jats:p> Solar cells harvest the energy of sunlight to create electricity, but electricity is hard to store. Solar cells could also be used to make hydrogen from water, which can be stored as a fuel. Separating water into hydrogen and oxygen, however, presents challenges, especially if this is done directly by illuminating the anode that oxides water. Under the acidic or alkaline conditions needed for practical devices, semiconducting anode materials corrode during operation. Hu <jats:italic>et al.</jats:italic> now show that amorphous titanium dioxide coatings can protect semiconductors from alkaline corrosion while still allowing light through. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6187" page="1005" related-article-type="in-this-issue" vol="344" xlink:href="10.1126/science.1251428">1005</jats:related-article> </jats:p>

Journal

  • Science

    Science 344 (6187), 1005-1009, 2014-05-30

    American Association for the Advancement of Science (AAAS)

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