Standing wave enhancement of red absorbance and photocurrent in dye-sensitized titanium dioxide photoelectrodes coupled to photonic crystals. Journal Article uri icon



  • The light harvesting efficiency of dye-sensitized photoelectrodes was enhanced by coupling a TiO(2) photonic crystal layer to a conventional film of TiO(2) nanoparticles. In addition to acting as a dielectric mirror, the inverse opal photonic crystal caused a significant change in dye absorbance which depended on the position of the stop band. Absorbance was suppressed at wavelengths shorter than the stop band maximum and was enhanced at longer wavelengths. This effect arises from the slow group velocity of light in the vicinity of the stop band, and the consequent localization of light intensity in the voids (to the blue) or in the dye-sensitized TiO(2) (to the red) portions of the photonic crystal. By coupling a photonic crystal to a film of TiO(2) nanoparticles, the short circuit photocurrent efficiency across the visible spectrum (400-750 nm) could be increased by about 26%, relative to an ordinary dye-sensitized nanocrystalline TiO(2) photoelectrode.

publication date

  • May 21, 2003

has restriction

  • closed

Date in CU Experts

  • March 13, 2015 11:27 AM

Full Author List

  • Nishimura S; Abrams N; Lewis BA; Halaoui LI; Mallouk TE; Benkstein KD; van de Lagemaat J; Frank AJ

author count

  • 8

Other Profiles

International Standard Serial Number (ISSN)

  • 0002-7863

Additional Document Info

start page

  • 6306

end page

  • 6310


  • 125


  • 20