Bandgap Tunability in Sb-Alloyed BiVO₄ Quaternary Oxides as Visible Light Absorbers for Solar Fuel Applications

Adv Mater. 2015 Nov;27(42):6733-40. doi: 10.1002/adma.201502361. Epub 2015 Sep 28.

Abstract

The challenge of fine compositional tuning and microstructure control in complex oxides is overcome by developing a general two-step synthetic approach. Antimony-alloyed bismuth vanadate, which is identified as a novel light absorber for solar fuel applications, is prepared in a wide compositional range. The bandgap of this quaternary oxide linearly decreases with the Sb content, in agreement with first-principles calculations.

Keywords: colloidal synthesis; light absorbers; materials discovery; quaternary oxides; solar energy conversion.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alloys / chemistry
  • Alloys / radiation effects
  • Antimony / chemistry*
  • Antimony / radiation effects*
  • Bismuth / chemistry*
  • Bismuth / radiation effects*
  • Light*
  • Models, Chemical
  • Oxidation-Reduction
  • Photochemical Processes
  • Solar Energy
  • Spectrum Analysis
  • Vanadates / chemistry*
  • Vanadates / radiation effects*
  • X-Ray Diffraction

Substances

  • Alloys
  • bismuth vanadium tetraoxide
  • Vanadates
  • Antimony
  • Bismuth