Higher brightness is achieved through several nanotechnological approaches:
1. Quantum Dots: These are semiconductor nanocrystals that exhibit quantum confinement effects, leading to size-tunable emission colors and high brightness. They are extensively used in display technologies.
2. Surface Plasmon Resonance (SPR): This involves the use of metallic nanoparticles that enhance light emission through the resonant oscillation of electrons. SPR is utilized in sensors and imaging applications.
3. Nanophosphors: These are nanoscale phosphorescent materials that show enhanced luminescence due to their high surface area to volume ratio. They are used in lighting and display technologies.