Ultraviolet light-emitting diode (UV LED) maker Sensor Electronic Technology Inc (SETi) of Columbia, SC, USA has been honored with the Tibbetts Award for the role it has played in R&D for the US Government under the Small Business ...
Tags: SensorElectronic, Technology, UV LEDs
The impact of using a vertical current injection structure was also seen in a higher external quantum effi- ciency (EQE) of 16.2% at 350mA, com- pared with 13.2% for the LLED. At 550mA, the VLED EQE fell 11.9%, com- pared with14.6% for the ...
Tags: LED
With the LED TV backlight market slowing, and the general lighting market yet to take off, LED makers are looking to all sorts of innovative ways to improve cost and performance to drive adoption — from disruptive new technologies to ...
Tags: LED Market, LED lighting
Osram Opto Semiconductors has improved its thin-film infrared chip technology to achieve high performance in the laboratory,including 72%wall-plug efficiency and 67%external quantum efficiency.Osram Opto Semiconductors has reported the ...
At 930 milliwatts from an operating current of 1 amp, its light output under laboratory conditions is 25 percent higher than that of the chips currently available on the market, which means that future infrared LEDs can be made even more ...
Tags: light output, infrared LEDs, energy-efficient, R&D laboratory, EQE
Infrared thin-film chip leaps to 72 percent efficiency The infrared chip prototype has achieved a new record with an efficiency of up to 72 percent. At 930 milliwatts from an operating current of 1 amp, its light output under ...
Tags: Europe Osram, LED chip, chip prototype
Using its latest thin-film technology, Osram Opto Semiconductors GmbH of Regensburg, Germany has developed a 1mm2 infrared LED chip prototype that has achieved what is claimed to be record efficiency of up to 72% at an operating current of ...
Researchers from Japan and the USA have reported the first fabrication on hydride vapor phase epitaxy (HVPE) aluminium nitride (AlN) substrates of aluminium gallium nitride (AlGaN) light-emitting diodes (LEDs) that emit at the ...
Tags: DUV, LEDs, AlGaN, AlN substrates, HVPE, light-emitting diodes
Infrared thin-film chip leaps to 72 percent efficiency The infrared chip prototype has achieved a new record with an efficiency of up to 72 percent. At 930 milliwatts from an operating current of 1 amp, its light output under laboratory ...
Tags: infrared thin-film chip, infrared chip, infrared illumination, Osram
Two DOE Grants Awarded for SSL Technology The U.S.Department of Energy Office of Science has awarded two Small Business Innovation Research(SBIR)grants(Phase I Release 3)targeting advances in solid-state lighting(SSL)technology.Applied ...
Tags: DOE Grants Award, SSL Technology, innovative concept or technology
Researchers in China have improved LED power output and droop behavior in nitride semiconductor light-emitting diodes (LEDs) by including an electron-emitting layer under the active region [Jianbao Zhang et al, Appl. Phys. Express, vol5, ...
Researchers in Korea and India have used zinc oxide (ZnO) nanorods on the rear side tolight-emitting diodes (LEDs) grown on c-plane sapphire [Joo Jin et al, Jpn. J. Appl. Phys., vol51, p102101, 2012]. The researchers were based at Chonbuk ...
Tags: LED
Taiwan researchers have achieved a reduction in luminous efficiency droop from 42%to 7%by inserting p-type indium gallium nitride(p-InGaN)between the active light-emitting and electron-blocking layers of a nitride semiconductor ...
This improved capability provides a significant reduction in optical absorption in the UV-C wavelengths,resulting in dramatic improvements in the processing and performance of UV-C optoelectronic components. This enhanced ...
US-based researchers have reported record external quantum efficiencies(EQE)of 10.4%for deep ultraviolet light-emitting diodes(DUV-LEDs)emitting at a wavelength of 278nm at a continuous-wave current of 20mA[Max Shatalov et ...