Dynamically modulating the surface plasmon resonance of doped semiconductor nanocrystals.

  title={Dynamically modulating the surface plasmon resonance of doped semiconductor nanocrystals.},
  author={Guillermo P{\'e}rez Garc{\'i}a and Raffaella Buonsanti and Evan L. Runnerstrom and Rueben J Mendelsberg and Anna Llord{\'e}s and Andr{\'e} Anders and T. J. Richardson and Delia J Milliron},
  journal={Nano letters},
  volume={11 10},
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… CONTINUE READING


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