Journal article
Metal-Enhanced Upconversion Luminescence Tunable through Metal Nanoparticle-Nanophosphor Separation
ACS nano, v 6(10), pp 8758-8766
23 Oct 2012
PMID: 22967489
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We have demonstrated amplification of luminescence in upconversion nanophosphors (UCNPs) of hexagonal phase NaYF4 (beta-NaYF4) doped with the lanthanide dopants Yb3+, Er3+ or Yb3+, Tm3+ by close proximity to metal nanoparticles (NPs). We present a configuration in which close-packed monolayers of UCNPs are separated from a dense multilayer of metal NPs (Au or Ag) by a nanometer-scale oxide grown by atomic layer deposition. Luminescence enhancements were found to be dependent on the thickness of the oxide spacer layer and the type of metal NP with enhancements of up to 5.2-fold proximal to Au NPs and of up to 45-fold proximal to Ag NPs. Concomitant shortening of the UCNP luminescence decay time and rise time is indicative of the enhancement of the UCNP luminescence induced by resonant plasmonic coupling and nonresonant near-field enhancement from the metal NP layer, respectively.
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Details
- Title
- Metal-Enhanced Upconversion Luminescence Tunable through Metal Nanoparticle-Nanophosphor Separation
- Creators
- Marjan Saboktakin - University of PennsylvaniaXingchen Ye - University of PennsylvaniaSoong Ju Oh - University of PennsylvaniaSung-Hoon Hong - University of PennsylvaniaAaron T. Fafarman - University of PennsylvaniaUday K. Chettiar - University of PennsylvaniaNader Engheta - University of PennsylvaniaChristopher B. Murray - University of PennsylvaniaCherie R. Kagan - University of Pennsylvania
- Publication Details
- ACS nano, v 6(10), pp 8758-8766
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 9
- Grant note
- DE-SC0002158 / U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering; United States Department of Energy (DOE) N00014-10-1-0942 / Office of Naval Research (ONR) Multidisciplinary University Research Initiative (MURI) on Optical Metamaterials
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000310096100034
- Scopus ID
- 2-s2.0-84867761324
- Other Identifier
- 991020834713404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology