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Research News | LEDs | White LEDs | Light Generation | Jan 29, 2021

KAUST Demonstrates High CRI Phosphor-Free InGaN-Based White LED

KAUST Demonstrates High CRI Phosphor-Free InGaN-Based White LED Daisuke Iida, Zhe Zhuang, Pavel Kirilenko, Martin Velazquez-Rizo, and Kazuhiro Ohkawaa from KAUST recently reported the growth of phosphor-free InGaN-based white light-emitting diodes (LEDs) by metalorganic vapor-phase epitaxy. Read more »

Research News | Technologies | microLEDs | Nanowire | Nanowire-LEDs | Dec 16, 2020

Aledia Has Produced Its First Nanowire Chips on 300mm Silicon Wafers Using CEA-Leti Pilot Lines

Aledia Has Produced Its First Nanowire Chips on 300mm Silicon Wafers Using CEA-Leti Pilot Lines Aledia, a French startup pioneering a disruptive technology for microLED displays, today announced it has manufactured the world's first microLED chips produced on 300 mm (12") silicon wafers. The company, which developed its breakthrough technology on 200 mm (8") silicon wafers over the past eight years, will produce the chips on both 200 mm and 300 mm wafers. The larger wafers provide better economic payoff and cost-effective integration with smaller-node electronics, which are only available on 300 mm silicon wafers. Aledia was spun out of CEA-Leti, a French research institute pioneering micro- and nanotechnologies, in 2012, and the work on 300 mm wafers has been performed by joint Aledia and CEA-Leti teams. Read more »

Research News | Environment | Health + Environment | Oct 30, 2020

Research Shows that Streetlights Contribute Less to Nighttime Light Emissions in Cities than Expected

Research Shows that Streetlights Contribute Less to Nighttime Light Emissions in Cities than Expected When satellites take pictures of Earth at night, how much of the light that they see comes from streetlights? A team of scientists from Germany, the USA, and Ireland have answered this question for the first time using the example of the U.S. city of Tucson, thanks to "smart city" lighting technology that allows cities to dim their lights. The result: only around 20 percent of the light in the satellite images of Tucson comes from streetlights. The study is published today in the journal "Lighting Research & Technology". Read more »

Research News | HCL-Research | Special Applications | Medical | Health | Oct 23, 2020

LED Technology Shines the Light on Ovarian Cancer Treatment

LED Technology Shines the Light on Ovarian Cancer Treatment Scientists estimate that nearly 60% of all cancer patients do not respond effectively to chemotherapy treatments. Even worse – many of those same patients experience toxic and sometimes deadly side effects. Now, a Purdue University scientist and entrepreneur is working to use simple LED light to help determine if certain chemotherapy options will work for specific patients. Read more »

Research News | HCL-Research | Office Lighting | Oct 23, 2020

Research Project Combines Dynamic Daylight and Artificial Light for a New Quality of Light for Work Environments

Research Project Combines Dynamic Daylight and Artificial Light for a New Quality of Light for Work Environments A new approach to lighting design and technology is the focus of the Double Dynamic Lighting project conducted by the renowned Aalborg University in Copenhagen, supported and accompanied by several leading lighting companies. The research team led by Prof. Ellen Kathrine Hansen is exploring the combination of dynamic daylight and artificial light in a spatial context and opening up a new dimension for architects and lighting experts in supporting individual needs and different working requirements. Read more »

Research News | OLEDs | PLEDs | Sep 28, 2020

EurekAlert - Annunces: Impurities Enhance Polymer LED Efficiencies

EurekAlert - Annunces: Impurities Enhance Polymer LED Efficiencies New research published in EPJ B reveals that the higher-than-expected efficiency of PLEDs can be reached through interactions between triplet excitons, and impurities embedded in their polymer layers. Molecular dynamics simulations have shown that the mysteriously high efficiency of polymer LEDs arises from interactions between triplet excitons in their polymer chains, and unpaired electrons in their molecular impurities. Read more »

Research News | Partnerships | Micro-LEDs | Light Generation | Special Applications | Displays | Jul 22, 2020

ALLOS and KAUST Are Working on High Efficiency Nitride-Based Red LEDs on Si

ALLOS and KAUST Are Working on High Efficiency Nitride-Based Red LEDs on Si ALLOS Semiconductors has engaged in a collaboration with Prof. Ohkawa and his team at King Abdullah University of Science and Technology (KAUST) for realizing high efficiency nitride-based red LEDs on large diameter silicon substrates. In the collaboration the teams are addressing fundamental issues like the large lattice mismatch and the quantum-confined Stark effect (QCSE) which are preventing the adoption of red nitride-based LEDs for practical industry usage. In particular, for the emerging field of micro LED displays there is a strong demand to enable red LEDs on large diameter wafers in addition to the established blue and green color LEDs in the nitride system in order to reduce manufacturing complexity and cost. Read more »

Research News | IR | Health + Wellbeing | Jun 29, 2020

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" in those aged 40 and above. Read more »

Smart Lighting + IoT | Technologies | Research News | Controls | Touchscreen | Jun 29, 2020

Touchscreens Are Going 3D with University of Bristol's Innovative New Spray-On Technique

Touchscreens Are Going 3D with University of Bristol's Innovative New Spray-On Technique Inspired by the way an artist creates graffiti on a wall and using a novel combination of sprayable electronics and 3D printing, the technique, called ProtoSpray, allows the creation of displays on surfaces that go beyond the usual rectangular and 2D shapes. Read more »

Research News | LEDs | Perovskite | Inkjet-Printing | Light Generation | Jun 15, 2020

Printed Perovskite LEDs – An Innovative Technique Towards a New Standard Process of Electronics Manufacturing

Printed Perovskite LEDs – An Innovative Technique Towards a New Standard Process of Electronics Manufacturing A team of researchers from the Helmholtz-Zentrum Berlin (HZB) and Humboldt-Universität zu Berlin has succeeded for the first time in producing light-emitting diodes (LEDs) from a hybrid perovskite semiconductor material using inkjet printing. This opens the door to broad application of these materials in manufacturing many different kinds of electronic components. The scientists achieved the breakthrough with the help of a trick: "inoculating" (or seeding) the surface with specific crystals. Read more »

Research News | Technologies | LiFi | Jun 15, 2020

CEA-Leti Researchers Break Throughput Record for LiFi Communications Using Single GaN Blue Micro-Light-Emitting Diode

CEA-Leti Researchers Break Throughput Record for LiFi Communications Using Single GaN Blue Micro-Light-Emitting Diode CEA-Leti today announced its researchers have broken the throughput world record of 5.1 Gbps in visible light communications (VLC) using a single GaN blue micro- light-emitting diode (LED). Their data transmission rate of 7.7 Gbps achieved with a 10 µm microLED marks another step toward commercialization and widespread use of LiFi communication. Read more »

Research News | SSL | LEDs | Light Generation | Light Extraction | Jun 10, 2020

Pushing Photons - Metasurface Design Methods Can Make LED Light Act More Like Lasers

Pushing Photons - Metasurface Design Methods Can Make LED Light Act More Like Lasers UC Santa Barbara researchers continue to push the boundaries of LED design a little further with a new method that could pave the way toward more efficient and versatile LED display and lighting technology: In a paper published in Nature Photonics, UCSB electrical and computer engineering professor Jonathan Schuller and collaborators describe this new approach, which could allow a wide variety of LED devices — from virtual reality headsets to automotive lighting — to become more sophisticated and sleeker at the same time. Read more »

HCL-Research | Research News | Full Spectrum LEDs | Health + Wellbeing | Color Perception | May 11, 2020

Executive Summary on "A Study on the Perception of Full Spectrum LEDs" Published

Executive Summary on "A Study on the Perception of Full Spectrum LEDs" Published From a LED producer's perspective, it is essential to have knowledge about the perception of LEDs by human beings. To consolidate existing and gain new knowledge on recently introduced Full Spectrum LEDs, which claim to bring natural light quality into electric lighting appliances, the Fraunhofer Institute for Building Physics (Germany) conducted a study in cooperation with three main LED manufacturers Nichia (Japan), Seoul Semiconductor (Korea), Toshiba Materials (Japan) and the LED gear supplier Lumitronix (Germany). Read more »

SSL | SSL-Research | Award | Dr. Shuji Nakamura | May 07, 2020

Congratulation, Shuji Nakamura for Another Prestigious Award – The 2020 NAS Award

Congratulation, Shuji Nakamura for Another Prestigious Award – The 2020 NAS Award On April 26, the 2020 National Academy of Science (NAS) Award for the Industrial Application of Science was awarded to Shuji Nakamura, a professor in the department of materials at UC Santa Barbara (UCSB). Read more »

Research News | Technologies | Special Applications | Manufacturing | 3D Printing | May 04, 2020

Austrian Tech University Graz Revolutionizes 3D Metal Printing Using LEDs

Austrian Tech University Graz Revolutionizes 3D Metal Printing Using LEDs A technology developed at Graz University of Technology uses LED instead of laser sources for the additive manufacturing of metal parts and optimizes 3D metal printing in terms of construction time, metal powder consumption, equipment costs and post-processing effort. Read more »

FEATURED

WEBINAR, May 20th – Luxury Store Lighting 101: Innovation, Design, Sustainability

WEBINAR, May 20th – Luxury Store Lighting 101: Innovation, Design, Sustainability This webinar will discuss key aspects of lighting for store locations representing sophisticated retail brands. The focus will be given to the efficacy, quality, design and sustainability of a lighting scheme. The complete lighting supply chain is served by the webinar. Read more »

FEATURED

Precise Characterization of Infrared Sources

Precise Characterization of Infrared Sources The demand for IR measurement solutions has increased significantly in the recent years. IR LEDs and IR lasers such as VCSELs have enabled many new applications in the field of “IR sensing”, using the NIR range (800-1000 nm) but also higher wavelengths as 1380 nm. Measurement tasks range from 3D ... Read more »

FEATURED

Tiny and Powerful LUXEON Rubix LEDs Raise the Bar for CRI, Lumens, and Efficacy with Addition of Lime and PC Amber

Tiny and Powerful LUXEON Rubix LEDs Raise the Bar for  CRI, Lumens, and Efficacy with Addition of Lime and PC Amber Lumileds today introduced two new colors – PC Amber and Lime – for its very small and very powerful LUXEON Rubix LED portfolio. The 1.4 square millimeter footprint is almost pixel like and belies the light output that’s possible from this high-power LED. There are 6 color options plus white in the ... Read more »

FEATURED

Cree LED Offers New RGBW LEDs for Architectural Illumination

Cree LED Offers New RGBW LEDs for Architectural Illumination Cree LED offers the broadest line of RGBW LEDs for architectural illumination. The market leading, upgraded CLQ6B, new CLW6A and CLR6A SMD LEDs are high performing 3 & 4 color LEDs. Read more »

FEATURED

WHITE PAPER: Measuring UVA & Violet LED Light Sources

WHITE PAPER: Measuring UVA & Violet LED Light Sources As the development of new UV LED sources continues at an ever-growing pace, so do the industrial applications that utilize them. UV LEDs are being put to work in various industrial processes, medical applications, and disinfection solutions. Efficient utilization of the UV radiation requires good ... Read more »

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