Tailored meta-grid of nanoparticles boosting performance of light-emitting diodes

Increase in light extraction efficiency will benefit energy savings amid overwhelming usage of LEDs in today's world. Towards this goal, scientists from IIT Guwahati and Imperial College London invented a 'meta-grid', a tailored layer of plasmonic nanoparticles, for introducing into the epoxy casing of an LED. Their technique revealed optimal design parameters for such meta-grids to produce greater light output over any narrow/broadband emission spectrum, besides boosting LEDs' lifetime by reducing unwanted internal reflection losses.