Volkmar Dierolf and an international team demonstrate the possibility of tuning the color of a GaN LED by changing the time sequence at which the operation current is provided to the device.
Optics & Photonics
Apr 29, 2019
3
170
Researchers of Karlsruhe Institute of Technology (KIT) have developed a novel, even more economical LED street light. They replaced conventional high-performance diodes by a special array of weaker LEDs and, thus, succeeded ...
Energy & Green Tech
Apr 03, 2019
1
10
Efficient near-infrared (NIR) light-emitting diodes of perovskite have been produced in a laboratory at Linköping University. The external quantum efficiency is 21.6 percent, which is a record. The results have been published ...
Optics & Photonics
Mar 29, 2019
2
299
Nanowire gurus at the National Institute of Standards and Technology (NIST) have made ultraviolet light-emitting diodes (LEDs) that, thanks to a special type of shell, produce five times higher light intensity than do comparable ...
Nanomaterials
Mar 21, 2019
0
70
A new type of light-emitting diode lightbulb could one day light homes and reduce power bills, according to Penn State researchers who suggest that LEDs made with firefly-mimicking structures could improve efficiency.
Nanomaterials
Feb 19, 2019
0
16
Metal halide perovskites are regarded as next generation materials for light emitting devices (LEDs). Recent research co-led by a scientist from City University of Hong Kong (CityU) has resulted in a new and efficient fabrication ...
Materials Science
Feb 14, 2019
0
10
People who believe light-emitting diodes, or LEDS, are just an efficient upgrade to the ordinary electric light bulb are stuck in their thinking, suggest Sandia National Laboratories researcher Jeff Tsao and colleagues from ...
Optics & Photonics
Jan 10, 2019
0
51
Another major success for the University of Bayreuth: over the next four years, the university will be coordinating an intercontinental research network that has 3.9 million euros in funding. Taking an interdisciplinary approach, ...
Engineering
Nov 21, 2018
0
3
Researchers have set a new efficiency record for LEDs based on perovskite semiconductors, rivalling that of the best organic LEDs (OLEDs).
Optics & Photonics
Nov 05, 2018
1
368
Social media was recently credited with reducing the number of casualties caused by air strikes in the Syrian civil war. The early warning system, developed by tech startup Hala Systems, uses remote sensors to detect aircraft ...
Internet
Aug 23, 2018
0
14
