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Localized Surface Plasmon Coupling between Mid-IR-Resonant ITO Nanocrystals.

ABSTRACT: Sn-doped indium oxide (ITO) nanocrystals (NC) provide tunable localized surface plasmon resonance in the mid-infrared. To evaluate the applicability of these n-doped plasmonic semiconductors in field-enhanced spectroscopies, it is necessary to assess how the low, free-electron density affects the E-field localization and plasmon coupling in NC films when compared to metal nanoparticles (NP). In this article, we investigate plasmon coupling between approximate 6 nm diameter ITO NC on the collective resonance and quantify the effect of the electromagnetic field enhancement on the absorbance signal of surface-attached ligands in NC films and monolayers with different ratios of doped and undoped indium oxide NC.

SUBMITTER: Xi M

PROVIDER: S-EPMC6191050 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature

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Localized Surface Plasmon Coupling between Mid-IR-Resonant ITO Nanocrystals.

Xi Min M Reinhard Björn M BM

The journal of physical chemistry. C, Nanomaterials and interfaces 20180220 10

Sn-doped indium oxide (ITO) nanocrystals (NC) provide tunable localized surface plasmon resonance in the mid-infrared. To evaluate the applicability of these n-doped plasmonic semiconductors in field-enhanced spectroscopies, it is necessary to assess how the low, free-electron density affects the E-field localization and plasmon coupling in NC films when compared to metal nanoparticles (NP). In this article, we investigate plasmon coupling between approximate 6 nm diameter ITO NC on the collecti ...[more]

PMID: 30344836

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