%0 Journal Article %J Nano Letters %D 2011 %T Dynamically Modulating the Surface Plasmon Resonance of Doped Semiconductor Nanocrystals %A Guillermo Garcia %A Raffaella Buonsanti %A Evan L. Runnerstrom %A Rueben J. Mendelsberg %A Anna Llordes %A André Anders %A Thomas J. Richardson %A Delia J. Milliron %K doping %K indium tin oxide %K nanocrystal %K spectroelectrochemistry %K surface plasmon %X

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.

%B Nano Letters %V 11 %P 4415 - 4420 %8 10/2011 %N 10 %! Nano Lett. %R 10.1021/nl202597n