TY - JOUR KW - Spectroelectrochemistry KW - Indium tin oxide KW - Nanocrystal KW - Surface plasmon KW - Doping AU - Guillermo Garcia AU - Raffaella Buonsanti AU - Evan L Runnerstrom AU - Rueben J Mendelsberg AU - Anna Llordes AU - André Anders AU - Thomas J Richardson AU - Delia J Milliron 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.

BT - Nano Letters DA - 10/2011 DO - 10.1021/nl202597n IS - 10 N2 -

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.

PY - 2011 SP - 4415 EP - 4420 ST - Nano Lett. T2 - Nano Letters TI - Dynamically Modulating the Surface Plasmon Resonance of Doped Semiconductor Nanocrystals VL - 11 SN - 1530-6984 ER -