Title
Gap-Plasmon Enhanced Gold Nanoparticle Photoluminescence
Abbreviated Journal Title
ACS Photonics
Keywords
gap plasmon; gap mode; plasmon resonance; gold nanoparticle; gold; photoluminescence; photoluminescence enhancement; NOBLE-METALS; QUANTUM YIELD; NANORODS; LUMINESCENCE; EMISSION; ANTENNAS; NANOSTRUCTURES; SPECTROSCOPY; SURFACES; MIRROR; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics; Physics, Applied; Physics, Condensed Matter
Abstract
Gap-plasmon-enhanced gold nanoparticle photoluminescence is studied experimentally at the single-particle level. The photoluminescence spectra of gold nanoparticles on an Al2O3-coated gold film under both 532 and 633 run excitation show a clear peak near the measured gap-plasmon resonance wavelength. Comparing the collected emission spectrum with that from a gold reference film under 633 nm excitation, a peak photoluminescence enhancement factor of 28 000 is observed. The spectral shape and absolute magnitude of the enhancement factors for both excitation wavelengths are reproduced using numerical calculations without the use of any free parameters. The photoluminescence enhancement is explained in terms of a gap-mode-enhanced e h pair generation rate and a wavelength-dependent enhancement of the emission efficiency.
Journal Title
Acs Photonics
Volume
1
Issue/Number
11
Publication Date
1-1-2014
Document Type
Article
DOI Link
Language
English
First Page
1224
Last Page
1230
WOS Identifier
ISSN
2330-4022
Recommended Citation
"Gap-Plasmon Enhanced Gold Nanoparticle Photoluminescence" (2014). Faculty Bibliography 2010s. 5735.
https://stars.library.ucf.edu/facultybib2010/5735
Comments
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