Dynamically Modulating the Surface Plasmon Resonance of Doped Semiconductor Nanocrystals

Publication Type

Journal Article

Date Published

10/2011

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.

Journal

Nano Letters

Volume

11

Year of Publication

2011

Short Title

Nano Lett.

Pagination

4415 - 4420

Issue

10

ISSN

1530-6984