TY - JOUR T1 - Dynamically Modulating the Surface Plasmon Resonance of Doped Semiconductor Nanocrystals JF - Nano Letters Y1 - 2011/10// SP - 4415 EP - 4420 A1 - Guillermo Garcia A1 - Raffaella Buonsanti A1 - Evan L. Runnerstrom A1 - Rueben J. Mendelsberg A1 - Anna Llordes A1 - André Anders A1 - Thomas J. Richardson A1 - Delia J. Milliron KW - doping KW - indium tin oxide KW - nanocrystal KW - spectroelectrochemistry KW - surface plasmon AB - 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. VL - 11 IS - 10 JO - Nano Lett. DO - 10.1021/nl202597n ER -