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
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 demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power ...
Nanophysics
Jul 12, 2018
1
1014
You could call it fatal attraction. Drawn by artificial lights in our brightening night-time world, animals find their lives in peril.
Ecology
Mar 27, 2018
0
180
Scientists of the Tomsk State University (Russia), with colleagues from Sweden and Finland, have created an algorithm for calculating the photophysical and luminescent characteristics of molecules. This algorithm makes it ...
Materials Science
Mar 14, 2018
0
37
A team led by engineers at the University of California San Diego has used data mining and computational tools to discover a new phosphor material for white LEDs that is inexpensive and easy to make. Researchers built prototype ...
Optics & Photonics
Feb 19, 2018
5
977
Researchers have designed a new LED-based train headlight that uses a tenth of the energy required for headlights using conventional light sources. If operated 8 hours every day, the electricity savings of the new design ...
Optics & Photonics
Feb 13, 2018
14
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