Directional sideward emission from luminescent plasmonic nanostructures

Periodic arrays of metallic nanoparticles can be used to enhance the emission of light in certain directions. We fabricated hexagonal arrays of aluminium nanoparticles combined with thin layers of luminescent material and optimized period (275 nm) and thickness (1500 nm) to obtain sideward direction...

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Published inOptics express Vol. 24; no. 2; pp. A388 - A396
Main Authors de Boer, Dick K G, Verschuuren, Marc A, Guo, Ke, Koenderink, A Femius, Rivas, Jaime Gómez, Rodriguez, Said Rahimzadeh-Kalaleh
Format Journal Article
LanguageEnglish
Published United States 25.01.2016
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Summary:Periodic arrays of metallic nanoparticles can be used to enhance the emission of light in certain directions. We fabricated hexagonal arrays of aluminium nanoparticles combined with thin layers of luminescent material and optimized period (275 nm) and thickness (1500 nm) to obtain sideward directional emission into glass for a wavelength band around 620 nm. The key physics is that the luminescent layer acts as a waveguide, from which light is emitted at preferential angles using diffractive effects. This phenomenon has applications in the field of solid-state lighting, where there is a desire for small, bright and directional sources.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.00A388