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Plasmon-Enhanced Upconversion.

Di M Wu1, Aitzol García-Etxarri1, Alberto Salleo1

  • 1†Department of Chemistry and ‡Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States.

The Journal of Physical Chemistry Letters
|August 16, 2015
PubMed
Summary
This summary is machine-generated.

Plasmon resonances significantly boost upconversion efficiency, a process converting lower to higher energy photons. This breakthrough enhances applications like bioimaging and solar cells, overcoming previous material limitations.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photonics

Background:

  • Upconversion converts lower to higher energy photons, enabling advanced applications.
  • Current upconverting materials lack the efficiency for practical use.

Purpose of the Study:

  • To explore how plasmon resonances can enhance upconversion efficiency.
  • To provide a comprehensive overview of plasmon-enhanced upconversion.

Main Methods:

  • Discussing theoretical principles of plasmon resonance enhancement.
  • Reviewing experimental demonstrations of plasmon-enhanced upconversion.
  • Analyzing factors influencing enhancement, including quantum yield, plasmonic geometry, and spectral overlap.

Main Results:

  • Plasmon resonances enhance upconversion efficiency by up to 450×.
  • Plasmonic structures increase electromagnetic field intensity and radiative emission rates.
  • Non-optical effects of metal nanostructures on upconverting emitters are considered.

Conclusions:

  • Plasmon-enhanced upconversion offers substantial efficiency improvements.
  • This field provides fundamental insights into nanoscale light-matter interactions.
  • Enhanced upconversion holds significant promise for technological applications.