title: Dynamically modulating the surface plasmon resonance of doped semiconductor nanocrystals.
abstract: Localized surface plasmon absorption features arise at high doping levels in semiconductor nanocrystals, appearing in the near-infrared range. Here we show that the surface plasmons of tin-doped indium oxide nanocrystal films can be dynamically and reversibly tuned by postsynthetic electrochemical modulation of the electron concentration. Without ion intercalation and the associated material degradation, we induce a > 1200 nm shift in the plasmon wavelength and a factor of nearly three change in the carrier density.
authors.affiliation: The Molecular Foundry,  Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Guillermo
authors.initials: G
authors.lastname: Garcia
authors.forename: Raffaella
authors.initials: R
authors.lastname: Buonsanti
authors.forename: Evan L
authors.initials: EL
authors.lastname: Runnerstrom
authors.forename: Rueben J
authors.initials: RJ
authors.lastname: Mendelsberg
authors.forename: Anna
authors.initials: A
authors.lastname: Llordes
authors.forename: Andre
authors.initials: A
authors.lastname: Anders
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Richardson
authors.forename: Delia J
authors.initials: DJ
authors.lastname: Milliron