Graphene quantum dot LEDs
The first graphene quantum dot light-emitting diodes (GQD-LEDs), fabricated by using high-quantum-yield graphene quantum dots through graphite intercalation compounds, exhibit luminance in excess of 1,000 ...
Manufacturing method paves way for commercially viable quantum dot-based LEDs
University of Florida researchers may help resolve the public debate over America's future light source of choice: Edison's incandescent bulb or the more energy efficient compact fluorescent lamp. It could be neither.
Zeroing in on the elusive green LED
Researchers at Rensselaer Polytechnic Institute have developed a new method for manufacturing green-colored LEDs with greatly enhanced light output.
LED efficiency puzzle solved by theorists
Researchers at the University of California, Santa Barbara, say they've figured out the cause of a problem that's made light-emitting diodes (LEDs) impractical for general lighting purposes. Their work will help engineers ...
Crystal light: New light-converting materials point to cheaper, more efficient solar power
University of Toronto engineers study first single crystal perovskites for new applicationsEngineers have shone new light on an emerging family of solar-absorbing materials that could clear the way for cheaper ...
Innovation boosts Wi-Fi bandwidth tenfold
Researchers at Oregon State University have invented a new technology that can increase the bandwidth of WiFi systems by 10 times, using LED lights to transmit information.
Japanese LED traffic lights just too cool when snow falls
Energy-saving LED traffic lights seemed like a cool way to cut back on electricity costs, but Japanese police said Monday they might just be too cool—because they don't melt snow.
A brighter design emerges for low-cost, 'greener' LED light bulbs
The phase-out of traditional incandescent bulbs in the U.S. and elsewhere, as well as a growing interest in energy efficiency, has given LED lighting a sales boost. However, that trend could be short-lived as key materials ...
Gold nanoparticles that make leaves glow in the dark
Philips eases switching fluorescent tubes with LED replacements
Silicon-based nanoparticles could make LEDs cheaper, greener to produce
(Phys.org) —Light-emitting diodes, or LEDs, are the most efficient and environmentally friendly light bulbs on the market. But they come at a higher up-front price than other bulbs, especially the ones ...
Shanghai prof claims Li-Fi advance, prepares show kits
A new kind of light bulb traps insects that carry vector-borne diseases
How many researchers does it take to change a light bulb? And how many lives could they save by changing it?
Using nanophotonics to reshape on-chip computer data transmission
A team at Stanford's School of Engineering has demonstrated an ultrafast nanoscale light emitting diode (LED) that is orders of magnitude lower in power consumption than today's laser-based systems and able ...