Plasmon resonances of semiconductor nanocrystals: Physical principles and new opportunities

Jacob A. Faucheaux, Alexandria L.D. Stanton, Prashant Jain

Research output: Contribution to journalReview article

Abstract

The discovery of localized surface plasmon resonances (LSPRs) in doped semiconductor nanocrystals has opened a new regime in plasmonics. We address both the technological and fundamental advances made possible by the realization of LSPRs in semiconductor nanocrystals. LSPRs were originally thought to be specific only to metallic nanostructures, but since their manifestation in semiconductor nanostructures, LSPRs are being seen as ubiquitous optical signatures of charge carriers. As fingerprints of a charge carrier collection, LSPRs of semiconductors are emerging as optical probes of processes that involve carrier dynamics, including redox reactions, electrochemistry, phase transitions, and photocatalysis. Unlike their electrical counterparts, LSPRs allow remote contactless probing and minimal device design. Ultrasmall semiconductor quantum dots are now enabling access to plasmon resonances of a handful of charge carriers, allowing us to ask fundamental questions regarding the lower limit of charge carriers needed to sustain a plasmon resonance, the emergence of a collective mode from a single-electron transition, and the effect of quantum confinement on plasmon resonances. These fundamental issues are discussed here, along with the need for new physical models required to capture the unique aspects of semiconductor LSPRs.

Original languageEnglish (US)
Pages (from-to)976-985
Number of pages10
JournalJournal of Physical Chemistry Letters
Volume5
Issue number6
DOIs
StatePublished - Mar 20 2014

Fingerprint

Surface plasmon resonance
surface plasmon resonance
Nanocrystals
nanocrystals
Semiconductor materials
Charge carriers
charge carriers
Nanostructures
Quantum confinement
Photocatalysis
Redox reactions
electron transitions
Electrochemistry
electrochemistry
Electron transitions
Semiconductor quantum dots
emerging
Phase transitions
quantum dots
signatures

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Plasmon resonances of semiconductor nanocrystals : Physical principles and new opportunities. / Faucheaux, Jacob A.; Stanton, Alexandria L.D.; Jain, Prashant.

In: Journal of Physical Chemistry Letters, Vol. 5, No. 6, 20.03.2014, p. 976-985.

Research output: Contribution to journalReview article

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