articleJournal of the American Chemical SocietyFeb 3, 2012Closed access

Water Oxidation at Hematite Photoelectrodes: The Role of Surface States

BMBenjamin M. KlahrSGSixto GiménezFFFrancisco Fabregat‐SantiagoTWThomas W. HamannJBJuan Bisquert

Michigan State University · Universitat Jaume I

PubMed
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Abstract

Hematite (α-Fe(2)O(3)) constitutes one of the most promising semiconductor materials for the conversion of sunlight into chemical fuels by water splitting. Its inherent drawbacks related to the long penetration depth of light and poor charge carrier conductivity are being progressively overcome by employing nanostructuring strategies and improved catalysts. However, the physical-chemical mechanisms responsible for the photoelectrochemical performance of this material (J(V) response) are still poorly understood. In the present study we prepared thin film hematite electrodes by atomic layer deposition to study the photoelectrochemical properties of this material under water-splitting conditions. We employed…

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Topics & keywords

Topics
Keywords
  • Hematite
  • Photocurrent
  • Semiconductor
  • Chemistry
  • Dielectric spectroscopy
  • Electrolyte
  • Water splitting
  • Photoelectrochemistry
UN Sustainable Development Goals
  • Clean water and sanitation
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