White Paper | Technology | Oct 23, 2013

Latest LRC Program Aims to Fine Tune Light for Greenhouse Crops & Medicinal Plants

Light and plants expert Tessa Pocock, Ph.D., recently joined the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute as a senior research scientist, leading the development of a new plant physiology lighting program. Her research focuses on plant photosynthesis, and plant development and regulation by light for traditional greenhouse crops and the emerging field of medicinal plants. Read more »

Fundings + Projects | Sep 11, 2013

Project cyFLEX Launched to Develop OLED-Based Luminescent Packaging

cynora OLED-protoypes under ambient light (Credits: cynora) cynora GmbH and the Karlsruhe Institute for Technology (KIT) jointly announce the successful launch of Project cyFLEX. Organic light-emitting diodes (OLEDs) will serve as a basis for generating flexible and luminescent surfaces for smart packaging and advertising applications. Self-luminous packaging and ultrathin flexible advertising panels for all kinds of products may soon become reality and will revolutionize product marketing. Read more »

White Paper | Technology | Sep 04, 2013

Imec and Veeco Announce Collaboration in GaN-on-Si Devices for LED and Power Electronics Applications

Goal of imec's multi-partner GaN-on-Si research and development program is the development of GaN LED on 200 mm silicon substrates with CMOS-compatible infrastructure Nanoelectronics research centre imec of Belgium and Veeco Instruments Inc. (Nasdaq:VECO) are collaborating on a project aimed at lowering the cost of producing gallium nitride on silicon (GaN-on-Si) -based power devices and LEDs. Read more »

Fundings + Projects | Sep 03, 2013

Tridonic Dresden and Fraunhofer COMEDD Present a Desk Luminaire with Flexible OLED from the Roll

The R2Flex desk luminaire demonstrator (inset) is built of the curved flexible OLED on metal substrate The joint OLED project R2Flex has been successfully finished now. As a result Fraunhofer COMEDD and Tridonic Dresden (formerly LEDON OLED Lighting) present a demonstrator of a desk luminaire with flexible OLED. The joint project R2Flex dealt with the production of highly efficient organic devices on flexible substrates, manufactured in a roll-to-roll process technology. R2Flex was funded by the Federal Ministry for Education and Research (BMBF) with a total sum of about 11 million Euros over a period of 2.5 years. Read more »

Technology | Aug 27, 2013

“1 bin” Wavelength LED Wafer Is Demonstrated by Azzurro

Azzurro LED Technologies demonstrates narrow tolerances of their proprietary GaN-on-SI process Azzurro LED Technologies announced the breaking news during a talk at ICNS-10 today. While showing production values of less than 3 nm wavelength uniformity, the 1.0 nm result came straight from development. The record 1.0 nm result demonstrates the capability to achieve “1 bin” GaN-on-Si LED wafers with Azzurro’s technology. Read more »

Fundings + Projects | Aug 21, 2013

EU-Funded ManuCloud Project Combines OLED and Organic Photovoltaic in a Façade Module

Demonstrators of the façade module with TABOLA® OLED modules of Fraunhofer COMEDD at the top part of the demonstrator (white on the left, white and orange on the right) and OPV-modules at the lower area The manufacturing of individually designed organic light-emitting diodes and solar cells and their combination can be realized in the near future. After three years the project ManuCloud (distributed Cloud product specification and supply chain manufacturing execution infrastructure), which was funded by the European Union, now successfully completed its work. As result the project partners Heliatek, Fraunhofer COMEDD, Tridonic Dresden and GSS Gebäude-Solarsysteme GmbH presented a demonstrator of a façade module, which combines the OLED- and OPV-technology. The objective of the ManuCloud project was the development of a service-oriented IT environment as basis for the next level of manufacturing networks by enabling production-related inter-enterprise integration down to shop floor level. Industrial relevance was guaranteed by involving industrial partners from the organic photovoltaic, organic lighting and automotive supply industries. Read more »

White Paper | Technology | Jul 31, 2013

Rensselaer Researchers Identify Cause of LED “Efficiency Droop”

Voltage at the onset of high injection and voltage at the onset of the efficiency droop (i.e., the peak-efficiency point) as a function of temperature Rensselaer Polytechnic Institute researchers have identified the mechanism behind a plague of LED light bulbs: a flaw called “efficiency droop” that causes LEDs to lose up to 20 percent of their efficiency as they are subjected to greater electrical currents. Efficiency droop, first reported in 1999, has been a key obstacle in the development of LED lighting for situations, like household lighting, that call for economical sources of versatile and bright light. Read more »

Fundings + Projects | White Paper | Jul 18, 2013

Supported Project “cyCESH” for Cost‐Efficient Printed OLEDs

Schematic structure of an OLED (Credits: cynora) On June 1, 2013, BMBF launched the project cyCESH involving cynora GmbH, Novaled AG and the University of Regensburg with the workgroup of Prof. Dr. Hartmut Yersin. The project is set to run for a duration of three years with a total funding of 6.1 million euros. The research of new soluble materials for the inexpensive production of organic light emitting diodes (Organic Light‐Emitting Diodes ‐ OLEDs) and the production of OLED devices with high efficiency are the main focus of the project. Read more »

Fundings + Projects | White Paper | Jun 12, 2013

Laser Processing Enables Selective Layer Modification of Encapsulated OLEDs for Signage Applications

4JET Technologies GmbH introduces a new laser process for customization and optimizing of organic LEDs at LOPE-C 2013. The new technology is a joint development with Novaled AG. Read more »

Fundings + Projects | Jun 11, 2013

Cheaper, 'Greener' Lighting with Inkjet-Printed Hybrid Quantum dot OLEDs

Left: Novel cadmium selenide (CdSe) quantum dots with ligand enhancement chemistry. The vials on the left contain quantum dots; the vial on the right contains solvent without quantum dots Right: Quantum dots with conjugated polymer and ligand enhancement chemistry (Images: Delaina Amos) To make OLEDs more cheaply and easily, researchers from the University of Louisville in Kentucky are developing new materials and production methods using modified quantum dots and inkjet printing. The team will discuss its work developing more commercially feasible QD-OLED devices at the Conference on Lasers and Electro-Optics (CLEO: 2013) June 9-14 in San Jose, Calif. Read more »

Technology | Jun 04, 2013

MIT Demonstrates New Method for Fine-Tuning Emissions from Quantum Dots

This new technique allows to determine if the width of the spectrum in a given batch is caused by different NCs in the batch having slightly different colors, or if each particle's emissions has a wider spectrum (Credits: Image courtesy of Lauren Aleza Kaye) Tiny particles of matter called quantum dots, which emit light with exceptionally pure and bright colors, have found a prominent role as biological markers. In addition, they are realizing their potential in computer and television screens, and have promise in solid-state lighting. New research at MIT could now make these quantum dots even more efficient at delivering precisely tuned colors of light. Read more »

Technology | May 24, 2013

New Family of Tiny Crystals Glow Bright in LED Lights

Oak Ridge National Laboratory scientists are using x-ray diffraction analysis to better understand tiny crystals that could be used in warm-white LED 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. Developing an LED that emits a broad spectrum of warm white light on par with sunlight has proven tricky, however. LEDs, which produce light by passing electrons through a semiconductor material, often are coupled with materials called phosphors that glow when excited by radiation from the LED. Minuscule crystals that glow different colors may be the missing ingredient for white LED lighting that illuminates homes and offices as effectively as natural sunlight. Read more »

Technology | May 08, 2013

Strain Engineering Improves Light Output from Green LEDs

Schematic of epitaxial material for conventional and shallow quantum well (SQW) LEDs (Figure 1). Light output power–current–voltage (L–I–V) characteristics of conventional LED and SQW LED (Figure 2). EQE versus current characteristics of conventional LED and SQW LED (Figure 3) The Chinese Academy of Science reports that 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 was carried out by Chinese Academy of Sciences’ Institute of Semiconductors, Beijing, and University of Hong Kong. Read more »

Technology | May 02, 2013

HD Retina, Martini's World Exclusive New LED Light for an Unmatched Color Perception Quality

For the first time, Martini's HD Retina LED technology could demonstrate its outstanding color rendering capabilities at Euroluce 2013 in Milano All truly great inventions, the ones that really have affected the course of history and people’s lives, have changed the context of a world that was not ready to welcome them. Small and large objects have introduced new solutions and unprecedented perspectives that previously only existed in the minds of their creators. They are innovative, surprising, revolutionary products: in a word unexpected. Read more »

Technology | Apr 03, 2013

Cambridge Invests £1 million to Accelerate GaN-on-Silicon LED Research

Gallium Nitride (GaN), grown on a silicon substrate, to manufacture light-emitting diodes. The material is critical to making LED lighting, which researchers and the Government agree could cut UK electricity consumption by 10-15%.  Credit: University of Cambridge Department of Materials Science & Metallurgy Gallium nitride has been described as “the most important semiconductor since silicon” and is used in energy-saving LED lighting. A new £1million growth facility will allow Cambridge researchers to further reduce the cost and improve the efficiency of LEDs, with potentially huge cost-saving implications. Read more »

FEATURED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED Lumileds introduces the LUXEON HL2X, the ideal choice for roadway lighting and sports lighting fixtures with the highest flux and efficiency in an industry standard package. "With 318+ lumens at 700 mA and 85°C, LUXEON HL2X delivers more 'field usable lumens' for optical engineers to work with. ... Read more »

EDITORIAL

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight A small LED torch that emits deep red light could help improve declining eyesight, scientists have said: A study by University College London, involving a small sample size of 24 people, has shown that staring at long wavelength light for three minutes every day can "significantly improve vision" ... Read more »

EDITORIAL

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection Signify, the world leader in lighting, is increasing its UV-C lighting production capacity and expanding its UV-C product portfolio. The company is leveraging more than 35 years of expertise in UV-C lighting to address the growing global need for the disinfection of air, surfaces and objects. Read more »