Scientists Build Thinnest-Possible LEDs and Find It To Be Stronger, More Energy Efficient
Most modern electronics, from flat-screen TVs and smartphones to wearable technologies and computer monitors, use tiny light-emitting diodes, or LEDs. These LEDs are based off of semiconductors that emit light with the movement of electrons. As devices get smaller and faster, there is more demand for such semiconductors that are tinier, stronger and more energy efficient.
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Two-Dimensional Material Shows Promise for Optoelectronics
A team of MIT researchers has used a novel material that’s just a few atoms thick to create devices that can harness or emit light. This proof-of-concept could lead to ultrathin, lightweight, and flexible photovoltaic cells, light emitting diodes (LEDs), and other optoelectronic devices, they say.
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A Roadmap to Efficient Green-Blue-Ultraviolet LEDs
Scientists at the U.S. Naval Research Laboratory (NRL) have suggested a method that could significantly increase the efficiency of green-blue-ultraviolet light-emitting diodes based on GaInN/GaN, AlGaN/GaN, and AlInN/GaN quantum wells. Their approach could enable advances in solid state lighting and the creation of low threshold lasers and high power light emitting diodes (LEDs). Their research is published in the January 25 and November 26, 2013 issues of Applied Physics Letters.
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CPI Manufactures Flexible OLED Lighting Demonstrators
The Centre for Process Innovation (CPI) has produced a range of flexible Organic Light Emitting Diode (OLED) demonstrators. Manufactured on CPI’s OLED/OPV Prototyping Line, the devices have been built on a range of substrates with thickness ranging from 50µm to 125µm. The device structure consists of an Indium Tin Oxide anode, evaporated hole injection layer, co-evaporated emissive layer and a conventional cathode. The device chemistry can be modified to produce a variety of colours and is encapsulated using a pressure sensitive adhesive and a commercially available barrier material.
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Cree Sets New Efficiency Benchmark with First 200 lpw LED Luminaire Prototype
Cree, Inc. raises the performance bar again with the demonstration of the first 200 lumen-per-watt (LPW) LED concept luminaire, which is more than twice the efficiency of the best linear fluorescent luminaires. The latest Department of Energy (DoE) projections* had estimated that this level of luminaire efficiency would not occur until after 2020, but Cree’s latest innovation has made this possible six years sooner than projected. The prototype leverages Cree’s vertical integration with innovations in LED chips, optics, materials technology and novel system design to deliver unprecedented performance. Read more »
Printed Transparent Electrodes for Flexible OLEDs
The BMBF-funded project IMAGE for the development of innovative printable electrode materials for high-efficient organic light-emitting diodes and solar cells has been successfully completed.
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Details of the 200lm/W TLED Lighting Technology Breakthrough Unraveled
Philips is the world’s first to present a lamp prototype that produces a record 200 lumen per watt (lm/W) of high quality warm white light. This LED technology breakthrough brings energy-efficient LED light suitable for general lighting applications to a whole new level. The 200lm/W LED is expected to hit the market in 2015 and will ultimately be used in a wide range of applications.
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Epistar Lab has Released the Infrared (850nm) Product with High Photoelectric Efficiency
EPISTAR LAB is consistently devoting in LED research and design. Lots of forward-looking technologies have been well developed and now applied to LED chip production like novel transparent conductive thin film, compound mirror structure, and new EPI structure design for reducing the absorption of light. The abovementioned innovation technologies will raise the light extraction efficiency and LED performance.
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UC Santa Barbara: Optimizing Phosphors Using Simple Guidelines Improves Efficiency of Solid-State Lighting
By determining simple guidelines, researchers at UC Santa Barbara's Solid State Lighting & Energy Center (SSLEC) have made it possible to optimize phosphors –– a key component in white LED lighting –– allowing for brighter, more efficient lights.
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Los Alamos National Laboratory Announces Dramatic Improvements in QD Technology
Dramatic advances in the field of quantum dot light emitting diodes (QD-LEDs) could come from recent work by the Nanotechnology and Advanced Spectroscopy team at Los Alamos National Laboratory.
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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 »
Project cyFLEX Launched to Develop OLED-Based Luminescent Packaging
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.
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Imec and Veeco Announce Collaboration in GaN-on-Si Devices for LED and Power Electronics Applications
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.
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Tridonic Dresden and Fraunhofer COMEDD Present a Desk Luminaire with Flexible OLED from the Roll
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.
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“1 bin” Wavelength LED Wafer Is Demonstrated by Azzurro
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.
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