Tailor-made directional emission in nanoimprinted plasmonic-based light-emitting devices

G. Lozano, G. Grzela, M.A. Verschuuren, Mohammad Ramezani, J. Gomez Rivas

Research output: Contribution to journalArticleAcademicpeer-review

57 Citations (Scopus)
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Abstract

We demonstrate an enhanced and tailor-made directional emission of light-emitting devices using nanoimprinted hexagonal arrays of aluminum nanoparticles. Fourier microscopy reveals that the luminescence of the device is not only determined by the material properties of the organic dye molecules but is also strongly influenced by the coherent scattering resulting from periodically arranged metal nanoparticles. Emitters can couple to lattice-induced hybrid plasmonic–photonic modes sustained by plasmonic arrays. Such modes enhance the spatial coherence of an emitting layer, allowing the efficient beaming of the emission along narrow angular and spectral ranges. We show that tailoring the separation of the nanoparticles in the array yields an accurate angular distribution of the emission. This combination of large-area metal nanostructures fabricated by nanoimprint lithography and light-emitting devices is beneficial for the design and optimization of solid-state lighting systems.
Original languageEnglish
Pages (from-to)9223-9229
Number of pages7
JournalNanoscale
Volume2014
Issue number6
DOIs
Publication statusPublished - 2014

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