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Directional sideward emission from luminescent plasmonic nanostructures.
Optics Express
|February 3, 2016
Summary
Researchers created aluminum nanoparticle arrays to enhance light emission directionality. Optimized designs achieve sideward emission into glass, useful for bright, directional solid-state lighting applications.
Area of Science:
- Photonics and Materials Science
Background:
- Metallic nanoparticles can direct light emission.
- Controlling light directionality is key for advanced lighting.
Purpose of the Study:
- To fabricate and optimize aluminum nanoparticle arrays for directional light emission.
- To achieve efficient sideward emission into glass for solid-state lighting.
Main Methods:
- Fabrication of hexagonal arrays of aluminum nanoparticles.
- Integration with thin luminescent layers.
- Optimization of nanoparticle period (275 nm) and layer thickness (1500 nm).
Main Results:
- Achieved sideward directional light emission into glass.
- Emission observed for wavelengths around 620 nm.
- Demonstrated the role of waveguide and diffractive effects.
Conclusions:
- Periodic aluminum nanoparticle arrays enhance light emission directionality.
- Optimized structures are suitable for creating bright, directional solid-state light sources.
