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Tailor-made directional emission in nanoimprinted plasmonic-based light-emitting devices
G Lozano1, G Grzela, M A Verschuuren
1Center for Nanophotonics, FOM Institute AMOLF. c/o Philips Research, High-Tech Campus 4, 5656 AE, Eindhoven, The Netherlands.
Nanoscale
|July 2, 2014
Summary
We developed a new method for directional light emission using nanoimprinted aluminum nanoparticles. This technique enhances light control for efficient solid-state lighting applications.
Area of Science:
- Optoelectronics
- Materials Science
- Nanotechnology
Background:
- Light-emitting devices (LEDs) often lack directional control, limiting their efficiency and application scope.
- Controlling light emission requires understanding interactions between materials and nanostructures.
- Plasmonic effects from metal nanoparticles can influence light properties.
Purpose of the Study:
- To demonstrate enhanced and tailor-made directional emission from light-emitting devices.
- To investigate the role of nanoimprinted hexagonal arrays of aluminum nanoparticles in controlling light output.
- To optimize solid-state lighting systems through precise control of light emission.
Main Methods:
- Fabrication of hexagonal arrays of aluminum nanoparticles using nanoimprint lithography.
- Characterization of light emission properties using Fourier microscopy.
- Analysis of coupling between emitters and lattice-induced hybrid plasmonic-photonic modes.
Main Results:
- Luminescence is influenced by both organic dye properties and coherent scattering from nanoparticle arrays.
- Plasmonic arrays enable coupling to hybrid modes, enhancing spatial coherence and enabling efficient beaming.
- Tailoring nanoparticle separation precisely controls the angular distribution of light emission.
Conclusions:
- Nanoimprinted aluminum nanoparticle arrays provide a method for enhanced directional light emission.
- The developed technique allows for efficient beaming of light within narrow angular and spectral ranges.
- This approach is beneficial for designing and optimizing advanced solid-state lighting systems.
