Technologies | Light Conversion | LEDs | Quantum Dots | May 15, 2017

Industry Breakthrough: Narrow Emission QD's Improve Warm White LED Performance and Improve Color Rendering

Industry Breakthrough: Narrow Emission QD's Improve Warm White LED Performance and Improve Color Rendering In an interview with LED professional at the Lightfair International in Philadelphia, Dr. Jy Bhardwaj, CTO at Lumileds, explained the advantages of the Quantum Dots technology. Lumileds will launch the first QD LED within the next few months. Read more »

Technologies | LEDs | Light Generation | Apr 18, 2017

New Cree NX Technology Platform Redefines LED Performance for Next Generation Lighting Systems

New Cree NX Technology Platform Redefines LED Performance for Next Generation Lighting Systems Cree announces a major LED breakthrough with the revolutionary NX technology platform that will power the next generation of Cree’s lighting-class LEDs. The NX technology platform enables the new Extreme Density (XD) LED family that delivers up to four times higher lumen density than Cree’s previous generation of high power LEDs. This new technology platform makes possible innovative new designs, eliminating current constraints for a wide spectrum of lighting applications such as color-mixing, directional lighting and industrial lighting. Read more »

Nanowire | Technologies | LEDs | Light Generation | Feb 14, 2017

Nanorod LEDs with Two Functions Could Make Multifunctional Displays

Nanorod LEDs with Two Functions Could Make Multifunctional Displays Cellphones and other devices could soon be controlled with touchless gestures and charge themselves using ambient light, thanks to new LED arrays that can both emit and detect light. Made of tiny nanorods arrayed in a thin film, the LEDs could enable new interactive functions and multitasking devices. Researchers at the University of Illinois at Urbana-Champaign and Dow Electronic Materials in Marlborough, Massachusetts, report the advance in the Feb. 10 issue of the journal Science. Read more »

Technologies | OLEDs | Light Generation | Jan 24, 2017

CTI Project Results Promise a Bright Future for OLEDs

CTI Project Results Promise a Bright Future for OLEDs Developing a low-cost, efficient method of increasing the attractiveness of OLEDs for lighting poses a significant challenge. Thanks to a CTI project, CSEM and Sefar AG have succeeded in designing a promising state-of-the-art way of achieving this aim. This technology opens up new opportunities for applications in residential, architectural, professional lighting segments, as well as consumer electronics. Read more »

Technologies | LECs | Light Generation | Nov 28, 2016

LECs - The Light of the Future Thanks Nanostructures

LECs - The Light of the Future Thanks Nanostructures In future they are to light up the inside of handbags or make evening joggers stand out in the dark: Light-emitting electrochemical cells, LECs, offer many advantages compared to familiar LEDs, but there's still something lacking – the right light. Until now only yellow light LECs are suitable for realistic use. But at least one other light colour is needed for more neutral light. Researchers in the Center for Nanointegration (CENIDE) of the University of Duisburg-Essen (UDE) have now been able to selectively change the colour for the first time and at the same time increase the performance of the LECs. Read more »

Technologies | OLEDs | Flexible OLEDs | Sep 09, 2016

Researchers Propose Graphene Anode for Flexible OLEDs

Researchers Propose Graphene Anode for Flexible OLEDs In their research article, Tae-Hee Han, Min-Ho Park, Sung-Joo Kwon, Sang-Hoon Bae, Hong-Kyu Seo, Himchan Cho, Jong-Hyun Ahn and Tae-Woo Lee from the Pohang University of Science and Technology and the Yonsei University in Korea respectively investigated the use of praphene anodes for ultra-flexible OLED devices. The original article, "Approaching Ultimate Flexible Organic Light Emitting Diodes Using a Graphene Anode", is published in NPG Asia Materials (2016) 8, e303; doi:10.1038/am.2016.108 online on September 9, 2016. Read more »

Technologies | LEDs | Light Generation | Quality | Jul 12, 2016

The Right Light for Fashion Retail, Fresh Food and Restaurants - More than just CCT and CRI

The Right Light for Fashion Retail, Fresh Food and Restaurants - More than just CCT and CRI Lumileds recently introduced their Luxeon Stylist Series to support fashion, retail, fresh food sales and restaurants. Lumileds calls their proprietary technology for CoB LEDs CrispWhite Technology, CrispColor Technology™, FreshFocus Technology™ and AtmoSphere Technology™ depending on the focus. In preparation for the product release, Rick Hamburger, Senior Director of Product Management, Eric Senders, Product Line Director CoB, Luis Acena, Senior Manager, Luxeon Stylist Series, Kevin Lucido, Senior Director of Global Marketing Communications discussed the technology and features of the new product series with Arno Grabher-Meyer from LED professional. Read more »

Technologies | LEDs | Laser | Light Conversion | LiFi | Jun 23, 2016

Perovskite Phosphor Provides High Quality White Light and Boosts VLC

Perovskite Phosphor Provides High Quality White Light and Boosts VLC Mark Peplow recently reported on the Chemical & Engineering News website about the latest encouraging research results from a research team from CEMSE and KAUST. The researchers found that combination of solution-processed CsPbBr3 perovskite nanocrystals (NCs) with a conventional red phosphor produces high quality white light when pumped with a blue LED or laser. Furthermore excited-state lifetime is short enough to provide record-breaking high bandwidth for visible light communication (VLC), aka LiFi. Read more »

Technologies | LEDs | Light Conversion | Jun 23, 2016

New Phosphor Promises Cheaper and more Efficient Next-Generation LED Lighting

New Phosphor Promises Cheaper and more Efficient Next-Generation LED Lighting Researchers from KU Leuven (Belgium), the University of Strasbourg, and CNRS have discovered a new phosphor that could make next-generation fluorescent and LED lighting even cheaper and more efficient. The team used highly luminescent clusters of silver atoms and the porous framework of minerals known as zeolites. Read more »

Technologies | OLEDs | Light Conversion | May 13, 2016

Research on OLEDs with Ultrathin Emissive Layers and a Spacer-Free Structure

Research on OLEDs with Ultrathin Emissive Layers and a Spacer-Free Structure Since C.W Tang demonstrated the first organic light-emitting diodes (OLEDs) based on a double-layer structure of organic materials in 1987, flat-panel displays and lighting applications based on OLED technology have grown dramatically because of their attractive features such as ultra-thin structure, light-weight and flexibility. To achieve a desirable OLED performance, a host-dopant system is adopted. This not only leads to an increase in material cost and device processing time, but also makes it difficult to control dopant concentration accurately. Therefore, OLEDs with dopant-free and ultrathin emissive layers (UEMLs) have aroused much attention. Shengfan Wu, Sihua Li, Qi Sun, Chenchao Huang & Man-Keung Fung recently published the results of their research on such ultrathin emissive layers (UEMLs) of phosphorescent materials for OLED applications. Read more »

Technologies | LEDs | White LEDs | Feb 25, 2016

Cree Announces Outstanding R&D LED Efficacy Combined with Superior Color Quality

Cree Announces Outstanding R&D LED Efficacy Combined with Superior Color Quality Cree, Inc. records another LED industry first with the demonstration of a single high-power LED delivering nearly 1,600 lumens at 134 lumens-per-watt (LPW) with similar color quality as an incandescent light bulb. With this result, Cree achieved a breakthrough 25 percent increase in lumens per watt (LPW) over production LEDs of similar color quality under operating conditions found in real-world LED lighting applications. This important milestone coupled with Cree’s latest SC5 Technology™ platform will lead to LED systems with increased performance, lower cost and better light. Read more »

Technologies | LEDs | GaN-on-Si | Jan 18, 2016

Plessey Builds LEDs in Cubic GaN on 3C-SiC/Si To Overcome The Green Gap

Plessey Builds LEDs in Cubic GaN on 3C-SiC/Si To Overcome The Green Gap Plessey, Anvil Semiconductors and the University of Cambridge announced today that they are working together to fabricate high efficiency LEDs in cubic GaN grown on Anvil's 3C-SiC / Si substrates. Cubic GaN has the potential to overcome the problems caused in conventional LEDs by the strong internal electric fields which impair carrier recombination and contribute to efficiency droop. This is particularly true for green LEDs where the internal electric fields are stronger and are believed to cause a rapid reduction in efficiency at green wavelengths known as "the green gap". The availability of cubic GaN from a readily commercialisable process on large diameter silicon wafers is as a key enabler for increasing the efficiency of green LEDs and reducing the cost of LED lighting. Read more »

Technologies | LEDs | Material Science | Jan 13, 2016

Uncovering Oxygen’s Role in Enhancing Red Eu-Doped GaN LEDs

Uncovering Oxygen’s Role in Enhancing Red Eu-Doped GaN LEDs Oxygen is indispensable to animal and plant life, but its presence in the wrong places can feed a fire and cause iron to rust. In the fabrication of solid state lighting devices, scientists are learning, oxygen also plays a two-edged role. While oxygen can impede the effectiveness of gallium nitride (GaN), an enabling material for LEDs, small amounts of oxygen in some cases are needed to enhance the devices’ optical properties. GaN doped with europium (Eu), which could provide the red color in LEDs and other displays, is one such case. Read more »

Technologies | Light Generation | Jan 12, 2016

Innovation Could Revive Incandescent Lighting, Bring More Efficient Solar Cells

Innovation Could Revive Incandescent Lighting, Bring More Efficient Solar Cells Incandescent lighting could make a comeback with a new type of filter that "recycles" infrared photons and improves efficiency, an innovation that also could enable solar cells to convert heat into electricity more efficiently than conventional photovoltaic technology. Read more »

Technologies | Research | Light Generation | Health | Perception | Simulation Tools | Jan 04, 2016

Latest Research Publications in the Journal of Solid State Lighting

Latest Research Publications in the Journal of Solid State Lighting On December 24th and 29th, 2015, three new articles have been published in the SpringerOpen Journal of Solid State Lighting. The three articles are titled "Optical Role of Die Attach Adhesive for White LED Emitters: Light Output Enhancement without Chip-Level Reflectors", "The Importance of Intrinsically Photosensitive Retinal Ganglion Cells and Implications for Lighting Design", and "Towards Perceptual Accuracy in 3D Visualizations of Illuminated Indoor Environments". Read more »

FEATURED

Simultaneous Measurement of Several Wavelength Ranges

Simultaneous Measurement of Several Wavelength Ranges Instrument Systems offers smart high-end solutions for complex spectral measurements that are to be made simultaneously over an extremely broad wavelength range, or over several samples. A group of spectroradiometers of the CAS series can be controlled in parallel by a trigger box. Read more »

FEATURED

Multisystem - Same Core, Multiple Shapes and Functionalities for Track Lighting

Multisystem - Same Core, Multiple Shapes and Functionalities for Track Lighting A.A.G. Stucchi low voltage system for track lighting is developed to satisfy all technical and design needs. The all system is based on a “smart core” that provides easy and magnetic installation of the lighting fixtures, and integrated databus for light control, thus being technically at the ... Read more »

EDITORIAL

High Conductive Foils Enabling Large Area Lighting

High Conductive Foils Enabling Large Area Lighting Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as one of the leading partners for research and development for surface technologies and organic electronics and Sefar AG, a leading manufacturer of precision fabrics from monofilaments, developed a roll-to-roll ... Read more »

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