Plasmon-enhanced light-driven water oxidation by a dye-sensitized photoanode

Degao Wang, Benjamin D. Sherman, Byron H. Farnum, Matthew V. Sheridan, Seth L. Marquard, Michael S. Eberhart, Christopher J. Dares, Thomas J. Meyer

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


Dye-sensitized photoelectrosynthesis cells (DSPECs) provide a flexible approach for solar water splitting based on the integration of molecular light absorption and catalysis on oxide electrodes. Recent advances in this area, including the use of core/shell oxide interfacial structures and surface stabilization by atomic layer deposition, have led to improved charge-separation lifetimes and the ability to obtain substantially improved photocurrent densities. Here, we investigate the introduction of Ag nanoparticles into the core/shell structure and report that they greatly enhance light-driven water oxidation at a DSPEC photoanode. Under 1-sun illumination, Ag nanoparticle electrodes achieved high photocurrent densities, surpassing 2 mA cm−2 with an incident photon-to-current efficiency of 31.8% under 450-nm illumination.

Original languageEnglish (US)
Pages (from-to)9809-9813
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number37
StatePublished - Sep 12 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General


  • Atomic layer deposition
  • Core/shell
  • Plasmonic
  • Water oxidation


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