Berkeley Lab Berkeley Lab A-Z Index Phone Book Jobs Search DOE

Solar Water-Splitting Materials From the Bottom-Up

A synthetic strategy was developed to grow InP nanowires (A). Photocathodes developed from InP feature improved performance over silicon (B) towards solar-driven water splitting. The inset shows an InP nanowire decorated with a Pt nanoparticle catalysts.

Scientific Achievement
Indium Phosphide nanowires were grown and utilized as a light absorbing photocathode for solar-driven water splitting.

Significance and Impact
An improved photocathode boosted the solar to fuel efficiency of integrated photoelectrochemical (PEC) cells.

Research Details

  • A new growth of Wurtzite-phase Indium Phosphide nanowires was developed on multiple substrates.
  • Indium Phosphide photocathodes offer enhanced performance over silicon.
  • In Z-scheme bio-inspired configuration, Indium Phosphide photocathode was combined with a Bismuth Vanadate photoanode to drive unassisted water splitting using sunlight.

N. Kornienko, N. Gibson, H. Zhang, S. W. Eaton, Y. Yu, S. Aloni, S. Leone, P. Yang, ACS Nano, 10, 5526 (2016)