Technology | Oct 27, 2006

Organic semiconductors make cheap, flexible photovoltaics and LEDs

Schematic of a junction between two organic semiconductors, an anthracene derivative containing free positive ions and a ruthenium, complex containing negative ions. When the two are joined, ions diffuse across. Imagine T-shirts that light up, or a beach umbrella that collects solar energy to run a portable TV. How about really cheap solar collectors for the roof? All this and more could come from cutting-edge research at Cornell that demonstrates a new type of organic semiconductor device which shows electroluminescence and acts as a photovoltaic cell. Read more »

Technology | Sep 26, 2006

QD Vision chief technologist Seth Coe-Sullivan named top innovator by Tech Review Magazine: MIT journal honors 35 top scientific and technology innovators under the age of 35

WATERTOWN, MA, SQD Vision, Inc. announced that Cofounder and Chief Technologist Seth Coe-Sullivan has been recognized by Technology Review as one of the world’s Top Science and Technology Innovators under the age of 35 for his breakthrough work in quantum dot LED performance and manufacturing process technology. Read more »

Technology | Sep 06, 2006

Japanese scientists have proposed a solution to the puzzle of why blue light-emitting diodes are so bright

bright-20blue-20led-gif Despite huge commercial success, until now the reason for the unusual brightness has not been known. The material they are made from - indium gallium nitride - can only be fabricated to such a poor quality that it would not be expected to emit much light. Read more »

Technology | Aug 25, 2006

Rensselaer researchers aim to close 'green gap' in LED technology

greenled_b-jpg Troy, N.Y. - A team of researchers from Rensselaer Polytechnic Institute has received $1.8 million in federal funding to improve the energy efficiency of green light-emitting diodes (LEDs). Read more »

Technology | Jul 27, 2006

Novel Nano-Etched Cavity Makes LEDs 7 Times Brighter

Etched nanostructured rings around an LED can make it more than seven times brighter. The novel technique developed at NIST may have applications in areas such as in biomedical imaging where LED brightness is crucial. Researchers at the National Institute of Standards and Technology (NIST) have made semiconductor light-emitting diodes (LEDs) more than seven times brighter by etching nanoscale grooves in a surrounding cavity to guide scattered light in one direction. Read more »

Technology | Jul 18, 2006

Paint-on semiconductor outperforms chips

Paint-on semiconductor ( Image from Ted Sargent) Researchers at the University of Toronto have created a semiconductor device that outperforms today's conventional chips -- and they made it simply by painting a liquid onto a piece of glass. Read more »

Technology | Jun 01, 2006

Photonics crystals improve LED efficiency

Figure 1 A 50% increase in efficiency is a significant stride toward being viable sources for solid-state lighting. Read more »

Technology | May 17, 2006

Aluminum Nitride Light Emitting Diodes with the Shortest Wavelength towards Dioxin, PCB Decomposition Technology

Figure1 Aluminum Nitride, "Shortest Light-Emitting Semiconductor" Nippon Telegraph and Telephone Corporation (NTT) has observed light of 210-nm wavelength from aluminum nitride (AlN) light emitting diodes (LED). Read more »

Technology | Feb 16, 2006

Method May Help Optimize Light-emitting Semiconductors

What do you see in these Rorschach-blot-like images? JILA physicists see the once-hidden electronic behavior of semiconductors. The computer plots show how energy intensity (ranging from low in blue to high in red) varies as electronic structures called excitons absorb laser light and emit energy at various frequencies. The pair of similar "butterflies" indicates that an exciton is absorbing and emitting energy in a predictable pattern. Physicists at JILA have demonstrated an ultrafast laser technique for "seeing" once-hidden electronic behavior in semiconductors, which eventually could be useful in more predictable design of optoelectronic devices, including semiconductor lasers and white light-emitting diodes. Read more »

FEATURED

Nationstar Overall Layout in UV LED Market

Nationstar Overall Layout in UV LED Market In August 2018, Nationstar set up the Non-visual Light Source Business Division, focusing on IR LED, UV LED, animal and plant lighting. Nationstar has been fully laid out on UVA/UVB/UVC. Since 2016, Nationstar has launched near-ultraviolet LED, deep-ultraviolet LED and modules, with wide wavelength ... 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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