Document Type
Article
Publication Date
5-15-2015
Abstract
By using silver nanoplatelets with a widely tunable localized surface plasmon resonance (LSPR) and their corresponding local field enhancement, here we show large manipulation of plasmonic enhanced upconversion in NaYF4:Yb3+/Er3+ nanocrystals at the single particle level. In particular, we show that when the plasmonic resonance of silver nanolplatelets is tuned to 656 nm, matching the emission wavelength, an upconversion enhancement factor ~5 is obtained. However, when the plasmonic resonance is tuned to 980 nm, matching the nanocrystal absorption wavelength, we achieve an enhancement factor of ~22 folds. The precise geometric arrangement between fluorescent nanoparticles and silver nanoplatelets allows us to make, for the first time, a comparative analysis between experimental results and numerical simulations, yielding a quantitative agreement at the single particle level. Such a comparison lays the foundations for a rational design of hybrid metal-fluorescent nanocrystals to harness the upconversion enhancement for biosensing and light harvesting applications.
Recommended Citation
Y. L. Wang, N. Mohammadi Estakhri, A. Johnson, H. Y. Li, L. X. Xu, L. Y. Sun, Z. Zhang, A. Alù, Q. Q. Wang, C. K. Shih, “Tailoring Plasmonic Enhanced Upconversion in Single NaYF4:Yb3+/Er3+ Nanocrystals,” Scientific Reports, Vol. 5, No. 10196 (7 pages), May 15, 2015. https://doi.org/10.1038/srep10196.
Copyright
The authors
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
This article was originally published in Scientific Reports, volume 5, in 2015. https://doi.org/10.1038/srep10196