Electron leakage causes efficiency drop, or what's known as droop, when LEDs are operated at higher drive currents according to a research group at Rensselaer Polytechnic Institute. For more than a decade, the LED industry has sought to ...
Peking University has found that using a pre-strain layer in nitride semiconductor epitaxial structures designed for blue laser diodes (LDs) can reduce the efficiency-sapping quantum-confined Stark effect (QCSE) [Cao Wen-Yu et al, Chin. ...
Ulsan National Institute of Science and Technology (UNIST) researchers report considerable improvement in device performance of polymer-based optoelectronic devices. Published in Nature Photonics, the new plasmonic material, can be applied ...
Tags: Polymer LEDs, Solar Cells
A boat or vessel that's sailing in fresh water or sea water is inevitably exposed to the hazards of corrosion. Sea water, especially, is considered to be highly corrosive and hence boat owners are advised to make use of marine zinc anodes ...
Tags: Processing Machinery
LED lighting has accomplished some great things since its introduction to the lighting market over the past few years. Sure LEDs were around before then, but the incandescent squeeze is what really prompted alternative forms of lighting to ...
Tags: LED Lighting, Natural Light
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 with warmer and more appealing hues. Researchers ...
Tags: LEDs, Silicon-Based Nanoparticles
Northwestern University's Center for Quantum Devices has developed a suface-plasmon (SP) enhancement technique for ultraviolet (UV) light-emitting diodes (LEDs) produced on silicon substrates [Chu-Young Cho et al, Appl. Phys. Lett., vol102, ...
Tags: UV-LEDs, Electrical, Electronics
In the future, your smartphone might be made out of concrete, no seriously. A group of researchers working together from the US, Finland, Germany, and Japan who work in conjunction with the US Department of Energy have developed a method of ...
Tags: Metal/Glass, Construction
LEDs are extremely efficient, and when it comes to single colors such as red or green commonly used in traffic lights or toys, they can’t be beat. But those aren’t the colors we want to light up our homes and offices. Our eyes ...
Tags: Lab-Grown Crystals, LEDs
A transnational team of researchers has reported the first electrically pumped exciton-polariton laser device using an arsenide semiconductor microcavity [Christian Schneider et al, Nature, vol. 497, p348, 2013]. The team was variously ...
Tags: Electrical Pumping, Electrical, Electronics
A contentious controversy surrounds the high intensity of indium gallium nitride (InGaN) LEDs, with experts split on whether or not indium-rich clusters within the material provide their remarkable efficiency. Now, researchers from the ...
Tags: InGaN LEDs, Electronics
Light-emitting diodes, better known as LEDs, offer substantial energy savings over incandescent and fluorescent lights and are easily produced in single colors such as red or green commonly used in traffic lights or children's toys. ...
Tags: Tiny Crystals, LED Lights
Kim Kisslinger, seen here with a focused-ion beam instrument, reduced the InGaN samples to a thickness of just 20 nanometers to prepare them for electron microscopy. From the high-resolution glow of flat screen televisions to light bulbs ...
Tags: Atomic-Scale, LED
Peratech, the innovators in touch technology, has developed an ultra-sensitive sensor using its award winning QTC™ technology. Quantum Tunnelling Composite material changes its resistance when pressure is applied, enabling it to be ...
Researchers in China have used strain engineering to improve the light output power of 530nm green light-emitting diodes (LEDs) by 28.9% at 150mA current injection [Hongjian Li et al, Appl. Phys. Express, vol6, p052102, 2013]. The research ...