Technology | Jun 22, 2011

Researcher from the University of Miami Helps Create a Smaller, Flexible LED

University of Miami professor at the College of Engineering, Jizhou Song, has helped design an light-emitting diode (LED) light that uses an array of LEDs 100 times smaller than conventional LEDs. The new device has flexibility, maintains lower temperature and has an increased life-span over existing LEDs. The findings are published online by the "Proceedings of the National Academy of Sciences." Read more »

Technology | Jun 16, 2011

OLED: Record-Breaking Efficiency News from Osram - 87lm/W

OLED laboratory-sample from Osram Technological breakthrough at OSRAM: researchers and developers have achieved a new efficiency record in the laboratory for OLED. The laboratory sample achieves 87 lm/W, significantly exceeding the current peak value. And the most important thing: the laboratory sample is highly proximate to the product, thus paving the way for highly energy-efficient OLED products with considerably higher brightness. Read more »

Technology | May 13, 2011

Novaled Develops World's Most Power-Efficient Fluorescent White PIN OLEDs

The principle architecture of a bottom emission OLED incorporating the intrinsic emission layers into the Novaled PIN OLED® technology by using doped transport layers: holes are injected from the anode and transported by p-hole transport layer (p-HTL) to the emitting layer (EML). Electrons are injected from the cathode and transported by the n-electron transport layer (n-ETL). Recombination of the charge carriers takes place in the EML and light is emitted The European Foundation for Quality Management (EFQM) awarded Novaled “Recognized for excellence”. The company, a leader in OLED Technology and Materials, achieved the highest level with the score of 5 star in the assessment by an independent expert team. Read more »

Technology | May 11, 2011

Osram Applies “Brilliant-Mix” LED Concept to Parathom Pro Classic A 80 LED Lamp and PrevaLED System

The natural warm white light, which provides realistic rendering of colors and skin tones, comes from the new “Brilliant Mix” LED concept from OSRAM Opto Semiconductors Warm white light with a high luminous efficacy (110 lm/W) and a color rendering index (CRI) of more than 90 are the result of the new “Brilliant-Mix” concept from OSRAM Opto Semiconductors. The intelligent color mix based on powerful Oslon SSL LEDs in EQ-White and Amber covers a broad white spectrum from 2700 to 4000 K. Depending on the required luminous flux, a different number of these LEDs can be combined to produce warm white feel-good light of high quality that will set new standards in general illumination applications. Read more »

Technology | May 10, 2011

Cree Announces New Efficacy Record in Lab: 231 Lumen Per Watt

The innovations from the lab are the basis of the advancement in the XLamp product range, like the XLamp MT-G Cree, Inc., a market leader in LED lighting, reports another industry-best efficacy record of 231 lumens per watt for a white power LED. This result is a significant advance beyond Cree’s previous industry record and further demonstrates how Cree’s relentless innovation continues to push the boundaries of what is possible with LED lighting. Read more »

Technology | Apr 28, 2011

New Method for Manufacturing the Elusive Green LED with Higher Efficacy

Rensselaer researchers discover a new method for boosting the light output of green LEDs Researchers at Rensselaer Polytechnic Institute have developed a new method for manufacturing green-colored LEDs with greatly enhanced light output. Read more »

Technology | Apr 21, 2011

Theorists from UC Santa Barbara Claim that LED Efficiency Puzzle Is Solved

Like scientists from the University of Arizona, not all scientists are convinced that Auger recombination is the cause for droop, some other models are proposed Researchers at the University of California, Santa Barbara, say they’ve figured out the cause of a problem that’s made light-emitting diodes (LEDs) impractical for general lighting purposes. Their work will help engineers develop a new generation of high-performance, energy-efficient lighting that could replace incandescent and fluorescent bulbs. Read more »

Technology | Apr 15, 2011

Advanced Materials Researchers "Brighten" Future of OLED Technology

The research team that developed the “Cl-OLED” (left to right): Zhibin Wang (PhD Candidate), Professor Zheng-Hong Lu, and Michael Helander (PhD Candidate + Vanier Canada Graduate Scholar) hold their Cl-ITO enabled OLED devices Chlorine: an abundant and readily available halogen gas commonly associated with the sanitation of swimming pools and drinking water – could a one-atom thick sheet of this element revolutionize the next generation of flat-panel displays and lighting technology? Read more »

Technology | Mar 16, 2011

OSRAM Opto Semiconductors Releases Application Notes for Brilliant Mix – Professional White for General Lighting

Principles of color mixing: The Blue-yellow concept is the standrd solution for phosphor converted white light, the "Brilliant-Mix" concept uses a green shifted phosphor concersion and adds amber to generate white light with high CRI At OSRAM Opto Semiconductors, the name “Brilliant Mix” stands for a new, highly efficient concept for generating white light with a high color rendering index for general lighting applications with light-emitting diodes (LEDs). Read more »

Technology | Mar 16, 2011

From the OSRAM Laboratory: Efficiency Record for Warm White

ory setup for a warm white LED achieves a peak value of 142 lm/W directly on the Planckian curve at 2700 K; an optimized setup at 3000 K could achieve 160 lm/W OSRAM Opto Semiconductors has set a new laboratory record of 142 lm/W for the efficiency of a warm white LED light source. With a correlated color temperature (CCT) of 2755 K the LED achieves a good color rendering index (CRI) of 81. Measurements were taken under standard conditions: room temperature and pulsed mode at an operating current density of 350 mA/mm². Read more »

Technology | Mar 09, 2011

BRIDGELUX Demonstrates Dramatic Advancements in GaN-on-Silicon Technology for Solid State Lighting

Growing LEDs on low-cost large diameter silicon substrates needs special knowledge Bridgelux Inc., a leading developer and manufacturer of LED lighting technologies and solutions, announced today that it has achieved a major breakthrough with the demonstration of 135 Lumens per Watt GaN-on-Silicon based LED Technology. This represents the industry’s first commercial grade performance for a Silicon-based LED. Read more »

Technology | Feb 15, 2011

Jewel-Toned Organic Phosphorescent Crystals: A New Class of Light-Emitting Material

Organic phosphors developed at the University of Michigan could one day lead to cheaper organic light-emitting diodes. Here, they glow in blue and orange when triggered by ultraviolet light. (Credit: Marcin Szczepanski, U-M College of Engineering) University of Michigan researcher Jinsang Kim and his colleagues have developed a new class of material that shines with phosphorescence—a property that has previously been seen only in non-organic compounds or organometallics. This pure organic compounds that glow in jewel tones could potentially lead to cheaper, more efficient and flexible display screens, among other applications. Read more »

Technology | Jan 26, 2011

Voiding Defects: New Technique Makes LED Lighting More Efficient

The new technique reduces the number of defects in those films by two to three orders of magnitude -- increasing the output of light by a factor of two for a given amount of power. (Image courtesy of Lukasz Tylec) Light-emitting diodes (LEDs) are an increasingly popular technology for use in energy-efficient lighting. Researchers from North Carolina State University have now developed a new technique that reduces defects in the gallium nitride (GaN) films used to create LEDs, making them more efficient. Read more »

Technology | Jan 14, 2011

Epistar Improves Efficacy of Warm-white Light to 170 lm/W with Advanced High-voltage LED Technologies

Epistar reaches warm-white light with efficacy of 170 lm/W and CRI of 88 applying several new technologies Epistar R & D Center have successfully developed several technologies including the new transparent substrate transfer process, the fine structure for increasing photon extraction efficiency and the improvement on the current spreading uniformity. Based on these technologies, the red LED chip with efficacy of 174 lm/W at Wd of 610 nm is realized. Read more »

Technology | Dec 22, 2010

Quantum Dots Are Not Dots

Quantum dots are solid-state ”artificial atoms” that are made up of thousands of atoms (yellow spheres) embedded in a semiconductor (blue spheres). Despite this complexity, the photon emission properties of quantum dots were hitherto believed to be like traditional atoms, where a point-emitter description is sufficient. Due to their mesoscopic dimensions, however, the point-emitter description is revealed to break down by comparing photon emission from quantum dots with opposite orientations relative to a metallic mirror. Researchers from the Quantum Photonics Group at DTU Fotonik in collaboration with the Niels Bohr Institute, University of Copenhagen surprise the scientific world with the discovery that light emission from solid-state photon emitters, the so-called quantum dots, is fundamentally different than hitherto believed. The new insight may find important applications as a way to improve efficiency of quantum information devices. Their findings are published on December 19th 2010 in the prestigious journal Nature Physics. Read more »

FEATURED

Emergency Lighting Just Got Smarter

Emergency Lighting Just Got Smarter NEW NOW: OSRAM’s standalone solution for emergency lighting testing, reporting and maintenance. Meet the QBM DALI EL-T CONV, a converter transforming existing DALI emergency luminaires into wireless ones, all controlled by the same lighting system. Its benefits? Allowing you to design all the ... Read more »

FEATURED

Continuous versus Discrete Calibration Sources: Consideration for Use

Continuous versus Discrete Calibration Sources: Consideration for Use Rapid advancements in the field of solid-state lighting have presented opportunities for the use of LED-based systems for calibrations typically performed with lamp-based sources. Their highly efficient and long-lived performance, rapid power up, and compact size have made LED-based sources an ... Read more »

FEATURED

LUXTECH Offers First Compelling Flex Modules Designed to Replace Traditional Rigid Modules: LUXroll (UL Listed)

LUXTECH Offers First Compelling Flex Modules Designed to Replace Traditional Rigid Modules:  LUXroll (UL Listed) The Indirect Costs of Using Rigid Boards Make Switching to Flexible LED Modules a Compelling Choice. Read more »

EDITORIAL

New LUXEON Rubix Cyan LED Enables 96-98 CRI Across CCT Range in Color Driven Solutions for Entertainment, Stage, and Studio

New LUXEON Rubix Cyan LED Enables 96-98 CRI Across CCT Range in Color Driven Solutions for Entertainment, Stage, and Studio Lumileds added cyan, its eighth color, to the LUXEON Rubix high-power LED family enabling multi-color driven systems to produce very high CRI white light that is so important in entertainment lighting. Adding the cyan LED fills a significant wavelength gap between blue and green in a system and ... Read more »

EDITORIAL

New date: Light + Building Autumn Edition 2022

New date: Light + Building Autumn Edition 2022 Frankfurt am Main, January 10, 2022. As the pandemic situation continues to develop very dynamically, Messe Frankfurt is postponing the world's leading trade fair for light and building technology to autumn 2022. Last December, intensive discussions with customers and cooperation partners had ... Read more »

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