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53 Current news about the topic leds

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Trace metal recombination centers kill LED efficiency

08-Nov-2016

Using cutting-edge first-principles calculations, researchers at the University of California, Santa Barbara (UCSB) have demonstrated the mechanism by which transition metal impurities - iron in particular - can act as nonradiative recombination centers in nitride semiconductors. The work ...

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A new form of light

Scientists have discovered a method to create fluorescent light that may have promising applications

06-Oct-2016

Glow-in-the-dark stickers, weird deep-sea fish, LED lightbulbs -- all have forms of luminescence. In other words, instead of just reflecting light, they make their own. Now a team of scientists from the University of Vermont and Dartmouth College have discovered a new way that some molecules can ...

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Demonstration of large-scale technique to produce quantum dots

23-May-2016

A method to produce significant amounts of semiconducting nanoparticles for light-emitting displays, sensors, solar panels and biomedical applications has gained momentum with a demonstration by researchers at the Department of Energy's Oak Ridge National Laboratory. While zinc sulfide ...

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Exploring the limits for high-performance LEDs and solar cells

07-Dec-2015

Hybrid optoelectronic devices based on blends of hard and soft semiconductors can combine the properties of the two material types, opening the possibility for devices with novel functionality and properties, such as cheap and scalable solution-based processing methods. However, the efficiency of ...

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A new design for an easily fabricated, flexible and wearable white-light LED

25-Aug-2015

Researchers from National Chiao Tung University, Taiwan have created highly flexible, efficient white LEDs with potential use in wearable displays and non-flat surfaces, such as curved and flexible television screens. While the design itself is new, the LED was completely fabricated from ...

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'Quantum dot' technology may help light the future

21-Aug-2015

Advances at Oregon State University in manufacturing technology for "quantum dots" may soon lead to a new generation of LED lighting that produces a more user-friendly white light, while using less toxic materials and low-cost manufacturing processes that take advantage of simple microwave ...

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Nanowires could be the LEDs of the future

30-Jun-2015

The latest research from the Niels Bohr Institute shows that LEDs made from nanowires will use less energy and provide better light. The researchers studied nanowires using X-ray microscopy and with this method they can pinpoint exactly how the nanowire should be designed to give the best ...

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Printable luminous particles enable cost-effective, large and curved luminous surfaces

27-Jan-2015

Researchers at the INM – Leibniz Institute for New Materials have now developed a new method that enables electroluminescence on large, curved surfaces in a cost-effective way: in this case, the light-emitting layer and all other components are produced by means of wet-chemical, printable ...

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Shedding light on why blue LEDS are so tricky to make

09-Jan-2015

Scientists at UCL, in collaboration with groups at the University of Bath and the Daresbury Laboratory, have uncovered the mystery of why blue light-emitting diodes (LEDs) are so difficult to make, by revealing the complex properties of their main component - gallium nitride - using sophisticated ...

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UCSB's Shuji Nakamura receives the 2015 Charles Stark Draper Prize

08-Jan-2015

UCSB materials professor and 2014 Nobel Laureate Shuji Nakamura has been awarded the Draper Prize for Engineering by the National Academy of Engineering (NAE). Nakamura, who is also a professor of electrical and computer engineering at UCSB, will share the prize with four other recipients also ...

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