Technologies Archive

Technology | Jul 29, 2010
Argonne researcher studies what makes quantum dots blink
Argonne researcher studies what makes quantum dots blink In order to learn more about the origins of quantum dot blinking, researchers from the U.S. Department of Energy's Argonne National Laboratory, the University of Chicago and the California Institute of Technology have developed a method to characterize it on faster time scales than have previously been accessed. Read more »
Technology | Jul 29, 2010
Researchers shed light on light-emitting nanodevice - a promise for light-emitting, flexible semiconductors
Researchers shed light on light-emitting nanodevice - a promise for light-emitting, flexible semiconductors An interdisciplinary team of Cornell nanotechnology researchers has unraveled some of the fundamental physics of a material that holds promise for light-emitting, flexible semiconductors. The discovery, which involved years of perfecting a technique for building a specific type of light-emitting device, is reported in the Sept. 30 online publication of the journal Nature Materials. Read more »
Technology | Jul 29, 2010
OSRAM researchers nominated for the German President’s prize for technology and innovation
OSRAM researchers nominated for the German President’s prize for technology and innovation OSRAM, together with the Fraunhofer Institute for Applied Optics and Precision Engineering, is one of the four teams nominated for the German Future Prize. The German Future Prize, which is now in its eleventh year, will be presented by Federal President Horst Köhler in December to celebrate outstanding technical, engineering and scientific achievements that have practical applications, are marketable and create jobs. Read more »
Technology | Jul 29, 2010
German Future Prize 2007 for OSRAM’s LED Research Team
German Future Prize 2007 for OSRAM’s LED Research Team For outstanding research work on innovative lighting technologies Dr. Klaus Streubel and Dr. Stefan Illek from OSRAM Opto Semiconductors, together with Dr. Andreas Bräuer from the Fraunhofer Institute for Optics and Precision Engineering in Jena, were awarded this year’s prize for technology and innovation from the President of Germany. Read more »
Technology | Jul 28, 2010
Hybrid Semiconductors Show Zero Thermal Expansion
Hybrid Semiconductors Show Zero Thermal Expansion Thermal expansion can separate semiconducting materials from the substrate, reduce performance through changes in the electronic structure of the material or warp the delicate structures that emit laser light. Recently published research by scientists at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL) and Argonne National Laboratory, and academic institutions has shed light on a semiconducting material with zero thermal expansion (ZTE). Read more »
Technology | Jul 28, 2010
Researchers Believe that New Technology Could Replace the Household Light-bulb Within Three Years
Researchers Believe that New Technology Could Replace the Household Light-bulb Within Three Years Light Emitting Diodes (LEDs), already used in electrical equipment such as computers and mobile phones, are several times more energy efficient than standard light-bulbs. However, because of their structure and material, much of the light in standard LEDs becomes trapped, reducing the brightness of the light and making them unsuitable as the main lighting source in the home. Read more »
Technology | Jul 28, 2010
Cnam Lounched Research Project on Characterization of Colour Rendering of LED Light Sources
Cnam Lounched Research Project on Characterization of Colour Rendering of LED Light Sources The CIE method applied since 1974 for defining the CRI (colour rendering index) allows the quantification of the "quality" of the light generated by artificial light sources. This index ranging from 0 to 100 defines the capacity of a light source to reproduce the various colours of objects, compared to a reference source, but does not apply correctly to LEDs. So, new studies are recommended to determine a new colour index or indices which take white light produced by LEDs into account. Read more »
Technology | Jul 28, 2010
ITRI develops alternate current LEDs
While ordinary 110/230 volt AC power must be converted to DC with a lower voltage for LED usage, at a cost and efficiency loss, Taiwan's Industrial Technology Research Institute (ITRI) has developed an alternate current light emitting diode (ACLED) with a luminous efficacy of 50lm/W, which does not need a AC-DC converter. Read more »
Technology | Jul 28, 2010
Research for OLED mass production
Research for OLED mass production The development of cost-effective processes for volume production of organic light emitting diodes (OLEDs) is the focus of the research work carried out under the CombOLED project. “The objective of this project, which is being funded by the EU and coordinated by OSRAM, is to create the necessary conditions for introducing the new light sources into lighting applications”, said Bernhard Stapp, Head of Solid State Lighting at OSRAM Opto Semiconductors. Read more »
Technology | Jul 28, 2010
The OLLA Project - Final Milestone: Europe’s Most Efficient OLED Lighting Tile Demonstrated
The OLLA Project - Final Milestone: Europe’s Most Efficient OLED Lighting Tile Demonstrated At the end of the project period, the OLLA project* consortium presents its final milestone: the basic technology for a white OLED (Organic Light-Emitting Diode) light source, with an efficacy of 50.7 lumens per watt at an initial brightness of 1.000 cd/m² based on the Novaled PIN OLED technology. The OLLA project is a joint basic research consortium, headed by Philips Lighting. Read more »
Technology | Jul 28, 2010
New efficieny record for OLEDs
MUNICH, Germany — A research group of the Dresden Technical University has achieved record energy efficiencies for OLEDs. The achievement brings the organic LED technology closer to industrial volume production. The research team achieved an efficiency of 26, 22 and 3.1 percent for red, green and blue organic LEDs which combined form a white light source. Read more »
Technology | Jul 28, 2010
World Record White OLED Performance Exceeds 100 lm/W
World Record White OLED Performance Exceeds 100 lm/W Universal Display Corporation (UDC) has successfully demonstrated a record-breaking white organic light-emitting diode (WOLED) with a power efficacy of 102 lm/W at 1000 cd/m2 using its proprietary, high-efficiency phosphorescent OLED technology. Read more »
Technology | Jul 28, 2010
New CALiPER Benchmark Report: Comparison of T12 and T8 Fluorescent Lamps and LED Linear Replacement Lamps
The U.S. Department of Energy (DOE) has published a new CALiPER Benchmark Report, presenting a comparison of T12 and T8 linear fluorescent lamps with commercially available LED linear replacement lamps. CALiPER testing addressed a range of standard lighting measures, including power usage, luminous flux, photometric distribution, source and luminaire efficacy, correlated color temperature (CCT), and color-rendering index (CRI) for the lamps tested separately and in troffers. Read more »
Technology | Jul 28, 2010
Low–Cost LEDs to Slash Household Electric Bills
Low–Cost LEDs to Slash Household Electric Bills The EPSRC Press Office recently announced: Engineering and Physical Sciences Research Council (EPSRC), the Cambridge University based Centre for Gallium Nitride has developed a new way of making GaN LEDs that could see household lighting bills reduced by up to 75% within five years. Read more »
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