Plasmon-Enhanced Two-Photon Absorption in Photoluminescent Semiconductor Nanocrystals

Brandon C. Marin, Su Wen Hsu, Li Chen, Ashley Lo, Darwin W. Zwissler, Zhaowei Liu, Andrea R. Tao

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


In this work, we demonstrate the two-photon fluorescence of covellite-phase copper sulfide nanodisks and investigate the role of the surface plasmon resonance on emission. Using selenium doping, we blue-shift the plasmon resonance toward the two-photon absorption edge. We observed a 3-fold enhancement of emission in these samples and report two-photon action cross sections that are an order of magnitude greater than conventional fluorophores. These nanomaterials offer a novel "all-in-one" platform for engineering plasmon-exciton coupling in the absence of a physical or chemical interface.

Original languageEnglish
Pages (from-to)526-531
Number of pages6
JournalACS Photonics
Issue number4
Publication statusPublished - 2016 Apr 20

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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