Spectral engineering of UV luminescence of upconverting nanoparticles

Vina Nguyen, Peter Dawson, Marek Romanowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spectral tuning of UV luminescence of upconverting nanoparticles (UNPs) enables development of modern applications of upconversion such as infrared-driven photochemistry. We investigated spectral tuning of luminescence of upconverting nanoparticles composed of NaYF4: Yb3+, Tm3+ (69.5:30:0.5). We demonstrated spectral control of luminescence of these UNPs by adding lanthanide ion that acts as a quenching agent for selected wavelengths of luminescence of Tm3+. Erbium (Er3+), which contains an energy level closely matching that of the ultra-violet (UV) energy level of Tm3+ (1D2), was selected as the quenching ion in this study. First, we demonstrated energy transfer between the luminescent ion (Tm3+) and the quenching ion (Er 3+). Subsequently, we demonstrated tuning of the UV luminescence intensity of these UNPs. The desired spectral output of the UNP is dependent on two factors, the selection of the quenching agent and its doping ratio in UNP composition.

Original languageEnglish (US)
Title of host publicationColloidal Nanoparticles for Biomedical Applications XV
EditorsMarek Osinski, Antonios G. Kanaras
PublisherSPIE
ISBN (Electronic)9781510632738
DOIs
StatePublished - 2020
EventColloidal Nanoparticles for Biomedical Applications XV 2020 - San Francisco, United States
Duration: Feb 1 2020Feb 3 2020

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume11255
ISSN (Print)1605-7422

Conference

ConferenceColloidal Nanoparticles for Biomedical Applications XV 2020
Country/TerritoryUnited States
CitySan Francisco
Period2/1/202/3/20

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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