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Proceedings Paper

Spectral engineering of UV luminescence of upconverting nanoparticles
Author(s): Vina Nguyen; Peter Dawson; Marek Romanowski
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Paper 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.

Paper Details

Date Published: 21 February 2020
PDF: 6 pages
Proc. SPIE 11255, Colloidal Nanoparticles for Biomedical Applications XV, 1125510 (21 February 2020); doi: 10.1117/12.2546826
Show Author Affiliations
Vina Nguyen, The Univ. of Arizona (United States)
Peter Dawson, The Univ. of Arizona (United States)
Marek Romanowski, The Univ. of Arizona (United States)


Published in SPIE Proceedings Vol. 11255:
Colloidal Nanoparticles for Biomedical Applications XV
Marek Osiński; Antonios G. Kanaras, Editor(s)

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