The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows.
Most modern electronics, from flat-screen TVs and smartphones to wearable technologies and computer monitors, use tiny light-emitting diodes, or LEDs. These LEDs are based off of semiconductors that emit light with the movement of electrons. As devices get smaller and faster, there is more demand for such semiconductors that are tinier, stronger and more energy efficient.
University of Washington scientists have built the thinnest-known LED that can be used as a source of light energy in electronics. The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows.
“We are able to make the thinnest-possible LEDs, only three atoms thick yet mechanically strong. Such thin and foldable LEDs are critical for future portable and integrated electronic devices,” said Xiaodong Xu, a UW assistant professor in materials science and engineering and in physics.
Xu along with Jason Ross, a UW materials science and engineering graduate student, co-authored a paper about this technology that appeared online March 9 in Nature Nanotechnology.
Most consumer electronics use three-dimensional LEDs, but these are 10 to 20 times thicker than the LEDs being developed by the UW.
“These are 10,000 times smaller than the thickness of a human hair, yet the light they emit can be seen by standard measurement equipment,” Ross said. “This is a huge leap of miniaturization of technology, and because it’s a semiconductor, you can do almost everything with it that is possible with existing, three-dimensional silicon technologies,” Ross said.
The UW’s LED is made from flat sheets of the molecular semiconductor known as tungsten diselenide, a member of a group of two-dimensional materials that have been recently identified as the thinnest-known semiconductors. Researchers use regular adhesive tape to extract a single sheet of this material from thick, layered pieces in a method inspired by the 2010 Nobel Prize in Physics awarded to the University of Manchester for isolating one-atom-thick flakes of carbon, called graphene, from a piece of graphite.
In addition to light-emitting applications, this technology could open doors for using light as interconnects to run nano-scale computer chips instead of standard devices that operate off the movement of electrons, or electricity. The latter process creates a lot of heat and wastes power, whereas sending light through a chip to achieve the same purpose would be highly efficient.
“A promising solution is to replace the electrical interconnect with optical ones, which will maintain the high bandwidth but consume less energy,” Xu said. “Our work makes it possible to make highly integrated and energy-efficient devices in areas such as lighting, optical communication and nano lasers.”
The research team is working on more efficient ways to create these thin LEDs and looking at what happens when two-dimensional materials are stacked in different ways. Additionally, these materials have been shown to react with polarized light in new ways that no other materials can, and researchers also will continue to pursue those applications.
The Latest on: LEDs
via Google News
The Latest on: LEDs
- LEDs Represent Future of Truck Headlampson January 24, 2020 at 7:45 am
“It is now arguably the most significant lighting improvement in decades.” Felder echoes Van Riper’s enthusiasm: “The light emitted from LEDs is better in color and brightness when compared to the ...
- Most Read articles – Intel chairman, Bluetooth LEDs, bad Appleon January 24, 2020 at 7:20 am
It’s time to take a look at the five most read articles on ElectronicsWeekly.com that were written in the last week, via the stats of Google Analytics. See what your peers have been reading this last ...
- Fatal Hedlow plane crash investigation report leds to claimon January 24, 2020 at 6:00 am
THE day a Rockhampton firefighter died during a flying lesson, the instructor had cancelled an earlier lesson because of weather conditions. It has been three years since Jason Caswell and his ...
- Chip Scale Packaged (CSP) LEDs Market Prognosticated for a Stunning Growth by 2030on January 22, 2020 at 3:17 am
The “Chip Scale Packaged (CSP) LEDs Market Analysis to 2030” is a specialized and in-depth study of the Chip Scale Packaged (CSP) LEDs industry with a focus on the Chip Scale Packaged (CSP) LEDs ...
- Second Northern Territory council to light up smart LEDson January 19, 2020 at 6:29 pm
The council will use Telensa’s PLANet intelligent street lighting system to control 4,700 wirelessly connected LEDs, which will be installed over the next 15 months. The $3 million rollout will make ...
- LEDs used in tests to replace invasive medical procedureson January 17, 2020 at 11:00 am
Researchers produce gadgets such as gastric balloons that break down when lit by swallowable lights ...
- Now, MC to splurge lakhs on 10 LEDson January 16, 2020 at 5:48 pm
When it comes to splurging public money, the Municipal Corporation does it the best. The cash-starved corporation is going to put up as many as 10 LEDs — four in the MC House and six in the conference ...
- Phoenix Replaces 100,000 Street Lights With LEDs, Looks to Save $3.5 Million Annuallyon January 15, 2020 at 7:25 am
The city of Phoenix has announced it will complete a conversion project to replace nearly 100,000 municipal streetlights with high-performance LEDs. The city estimates that this conversion project ...
- LEDs Engineered With Colloidal Quantum Dots Can Function As Laserson January 15, 2020 at 6:46 am
Los Alamos scientists have incorporated meticulously engineered colloidal quantum dots into a new type of light emitting diodes (LEDs) containing an integrated optical resonator, which allows them to ...
- SML-LXIL0603 Narrow Beam Surface Mount LEDs from Lumex Featured in THE EDGE by Future Electronicson January 14, 2020 at 5:16 am
Montreal, Canada (mynewsdesk) January 14, 2020 - Future Electronics, a global leading distributor of electronic components, is featuring narrow beam surface mount LEDs from Lumex in the latest edition ...
via Bing News