Technology News

Technologies | Research | LEDs | Light Conversion | IR-LEDs | Quantum Dots | Dec 13, 2018

Colloidal Quantum Dots Make LEDs Shine Bright in the Infrared

Colloidal Quantum Dots Make LEDs Shine Bright in the Infrared ICFO researchers report on the development of a colloidal quantum-dot light emitting diode with unprecedented quantum and power conversion efficiencies in the infrared range. The ideal optoelectronic semiconductor material should be a strong light emitter i.e. should emit light very efficiently upon optical excitation as well as be an efficient charge conductor to allow for electrical injection in devices. These two conditions when met can lead to highly efficient light emitting diodes as well as to solar cells with the possibility to approach the Shockley-Queisser limit. Until now the materials that have come close to meeting these conditions have been based on epitaxially-grown costly III-V semiconductors that cannot be monolithically integrated to CMOS electronics. Read more »

Resources | LpR Article | Research News | CIE | Applications | Dec 12, 2018

How to Use the Technologies for Adaptive Lighting

How to Use the Technologies for Adaptive Lighting The technologies to provide adaptive lighting are already in the marketplace and are accepted by some jurisdictions. Nonetheless, we have an inadequate understanding of how best to use these technologies, meaning that installations might not serve users well, and in the worst case, might lead to harm. Lighting researchers can generate the knowledge needed to support the best application of adaptive lighting technologies. The International Commission on Illumination (CIE) understands the importance and urgency to deal with problems of adaptive, dynamic and intelligent lighting in all application fields. Hence, this topic is a highlight of CIE’s research strategy. Read more »

Resources | LpR Article | Technologies | Horticulture | UV | Dec 01, 2018

UV LED Technology for Emerging Applications in Agriculture

UV LED Technology for Emerging Applications in Agriculture The Ultraviolet (UV) LED market has expanded five-fold in the past decade and is projected to grow to over $1 billion by 2025. A key trend expected to influence the market is the ability to expand into new applications, including agriculture. UV light, at proper frequency and dose, can increase the production of active substances in medicinal and traditional plants and it can also help maintain a healthy growing environment. But to fully take advantage of UV LEDs, some major re-design considerations are required. Terrance Berland, CEO of the Violet Defense Group, the parent company of Violet Gro, will explain which considerations these are; for instance, why it is crucial to incorporate the appropriate lens material. Read more »

Technologies | Research | LEDs | Perovskite | Light Generation | Nov 22, 2018

Researchers Push Perovskite LEDs' Efficiency To Rivaling Best OLEDs

Researchers Push Perovskite LEDs' Efficiency To Rivaling Best OLEDs Compared to OLEDs, which are widely used in high-end consumer electronics, the perovskite-based LEDs, developed by researchers at the University of Cambridge, can be made at much lower costs, and can be tuned to emit light across the visible and near-infrared spectra with high colour purity. Now, researchers have set a new efficiency record for LEDs based on perovskite semiconductors, rivalling that of the best Organic LEDs (OLEDs). Read more »

Resources | Research News | Health & Environment | Human Centric Lighting | News-Spot | Nov 09, 2018

Researchers from the University of Surrey Find that Blue Light Can Reduce Blood Pressure

Researchers from the University of Surrey Find that Blue Light Can Reduce Blood Pressure Exposure to blue light decreases blood pressure, reducing the risk of developing cardiovascular disease, a new study from the University of Surrey and Heinrich Heine University Duesseldorf in collaboration with Philips reports. Read more »

Technologies | Research | LEDs | Light Conversion | Machine Learning | Oct 23, 2018

New Algorithm Can More Quickly Predict Phosphor Materials for LEDs

New Algorithm Can More Quickly Predict Phosphor Materials for LEDs Jakoah Brgoch, assistant professor of chemistry at the University of Houston, and members of his lab published a paper on Oct. 22 in Nature Communications describing how machine learning speeds discovery of new materials. By scanning a huge number of compounds for their key attributes they were looking for a new light conversion material that could be used in white LEDs. Read more »

Resources | LpR Article | Technologies | Optics | Nano-Optics | Oct 22, 2018

LED Lighting Requires New Approaches in Optics

LED Lighting Requires New Approaches in Optics LpR 67 Article, page 88: Even though LED technology has been established LEDs still need new approaches in electronics, thermal management or optics to make complete use of their advantages. Marek Škereň, Chief Technology Officer of IQ Structures, explains how new optical devices, with the trade name Nanoptiqs, based on principles of diffraction are applied to achieve improved performance of white light illumination systems. This unique solution is based on full control over the modulation of material and geometric properties of the optical elements at a nano-level. A combination of complex transmission diffractive elements, with specially designed systems of micro-reflectors (produced using an innovative mass-production technique) is also presented as a promising flexible building unit for the construction of new generation luminaires. Read more »

Technologies | Research | LEDs | Light Generation | Light Conversion | Oct 11, 2018

Spanish Researchers Develop Sand that Produces White Sun-Like LEDs

Spanish Researchers Develop Sand that Produces White Sun-Like LEDs The team led by the chemist-technologist Rubén Costa of IMDEA Materials (Madrid) and the chemists Jesús Berenguer of the University of La Rioja and Javier García of the University of Alicante has overcome one of the biggest obstacles in the progress towards new sources of healthier artificial lighting. Read more »

Technologies | LEDs | RGB LEDs | Controls | Driver IC | Oct 09, 2018

Dynamic In-Car Lighting Scenarios - Osram's Osire E4633i Prototype with Inova's Serial Control Driver

Dynamic In-Car Lighting Scenarios - Osram's Osire E4633i Prototype with Inova's Serial Control Driver The more autonomous a car becomes, the more the way in which it is used will change. As developments continue toward autonomous driving, more and more attention is being focused on the passenger cell. Light will become an integral part of the passenger cell, taking on functional and design-specific tasks. Previously static light, which could only be switched on and off, has now been given a dynamic dimension with the prototype of the Osire E4633i – with countless design options for car manufacturer. Read more »

Technologies | Light Generation | OLEDs | Special Applications | Displays | Aug 07, 2018

Electron Beam Patterning for Full-Color HR OLED Displays

Electron Beam Patterning for Full-Color HR OLED Displays OLED microdisplays are increasingly establishing themselves in consumer-ready wearables and data glasses. In order to meet the requirements for higher efficiency, higher contrast, and higher resolutions in these applications, Fraunhofer FEP scientists have developed a new micropatterning approach for OLEDs on silicon substrates. This might eliminate the use of color filters and shadow masks in the future and allow full-color displays to be developed by means of a new process. An increase in efficiency and considerably broader color gamut have already been demonstrated in first experiments. Read more »

Technologies | Research | LEDs | Quantum Dots | Light Conversion | Jul 19, 2018

Liquid-Suspended White QD LEDs Achieve Luminous Efficacy Record

Liquid-Suspended White QD LEDs Achieve Luminous Efficacy Record Quantum dot (QD) white LEDs that show a luminous efficacy of 105 lm/W have been developed. The QDs are liquid-based and, according to researchers, could help the LEDs achieve an efficacy double that of LEDs that incorporate quantum dots in solid films. With further development, researchers say the new LEDs could reach an efficacy over 200 lm/W. Read more »

Technologies | Research Reports | LEDs | Manufacturing | Jul 12, 2018

InteGreat Project Successfully Researched New Approaches to LED Production

InteGreat Project Successfully Researched New Approaches to LED Production In the InteGreat research project, Osram Opto Semiconductors coordinated a consortium comprising seven partners from science and industry. Between December 2014 and February 2018 the project partners investigated time-honored manufacturing approaches and know-how along the entire LED production process with the aim of identifying potential areas for optimization. The new insights allow for LED products to be given additional superior properties that would have been difficult or even impossible to achieve with the technologies previously used to produce LEDs. Read more »

Technologies | Research News | Thermal Management | Jul 09, 2018

Intended for High-Performance Computer Chips - Maybe Also Useful for LEDs

Intended for High-Performance Computer Chips - Maybe Also Useful for LEDs The inner workings of high-power electronic devices must remain cool to operate reliably. High internal temperatures can make programs run slower, freeze or shut down. Researchers at the University of Illinois at Urbana-Champaign and The University of Texas, Dallas have collaborated to optimize the crystal-growing process of boron arsenide – a material that has excellent thermal properties and can effectively dissipate the heat generated in electronic devices. Read more »

Technologies | LEDs | Micro-LEDs | Light Generation | Special Applications | Displays | Jun 19, 2018

KAIST Team Develops Flexible Blue Vertical Micro LEDs

KAIST Team Develops Flexible Blue Vertical Micro LEDs In CES 2018, micro LED TV was spotlighted as a strong candidate for replacing the active-matrix organic light-emitting diode (AMOLED) display. Micro LED is a sub-100 um light source for red, green and blue light, which has advantages of outstanding optical output, ultra-low power consumption, fast response speed, and excellent flexibility. Professor Keon Jae Lee from the Department of Materials Science and Engineering and his team have developed a low cost production technology for thin-film blue flexible vertical micro LEDs (f-VLEDs). Read more »

Resources | LpR Article | Technologies | Applications | May 02, 2018

Multi-Pixel LED Technology Opens New Horizons for Smart Lighting Applications

Multi-Pixel LED Technology Opens New Horizons for Smart Lighting Applications The evolution of Multi-Pixel LED technology has initiated a giant leap in the development of intelligent lighting systems which are most visible in the automotive industry. Now the first hybrid LED provides smart headlights with more than 1000 individually controllable pixels. Ralph Bertram, who is working on advanced LED device concepts, and Norbert Harendt, who is developing optics solutions for general lighting at Osram Opto Semiconductors, show that automotive lighting is just one of the potential areas in which intelligent selective pixel control can be applied. Options for the use in general lighting, such as information display for outdoor, indoor, retail or industrial applications, are very versatile. Read more »

FEATURED

Nichia Showcases LEDs with 'Light so Good'

Nichia Showcases LEDs with 'Light so Good' At Light + Building 2020 held in Frankfurt, Nichia – the leader in high-performance LED solutions – reveals it will present at least three complementary technologies to improve the delivery of light quality under an over-arching banner of 'Light so Good'. Read more »

EDITORIAL

Zhaga Summit – September 23rd in Bregenz

Zhaga Summit – September 23rd in Bregenz Luger Research and Zhaga are proud to announce that the 2020 LpS/TiL conference will host a Zhaga Summit. This one-day event will provide application-driven introductions to the latest Zhaga standards, review their market reception, and solicit inputs from the specifier community through workshops. Read more »

EDITORIAL

Research Confirms that Light Pollution Can Suppress Melatonin Production in Humans and Animals

Research Confirms that Light Pollution Can Suppress Melatonin Production in Humans and Animals Melatonin sets the internal clock. Researchers from IGB in an international team have analyzed data on the impact of light pollution on melatonin formation in humans and vertebrates. They found that even the low light intensities of urban skyglow can suppress melatonin production. Melatonin ... Read more »

EDITORIAL

CIE Announces Availability of New Documentation: Test Method for OLED Luminaires and OLED Light Sources

CIE Announces Availability of New Documentation: Test Method for OLED Luminaires and OLED Light Sources The new CIE International Standard S 025-SP1/E:2019 is a supplement to CIE S 025:2015 Test Method for LED Lamps, LED Luminaires and LED Modules specifies the requirements for measurement of electrical, photometric, and colorimetric quantities of OLED luminaires and OLED light sources. These sources ... Read more »

EDITORIAL

Care, Caution & Awareness Are Needed When Using LED Lights

Care, Caution & Awareness Are Needed When Using LED Lights Kyra Xavia is a researcher, educator and investigative journalist based in New Zealand. Her roles as general secretary of the Light and Lighting Research Consortium (LLRC), delegate for the International Dark Sky Association (IDA), New Zealand Ambassador for Women in Lighting 2019, and co-leader of ... Read more »