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125 Current news about the topic light sources

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Lighting material of the future

Green luminescent substance is a hot candidate for producing OLEDs

07-May-2020

At the Paul Scherrer Institute PSI, researchers have gained insights into a promising material for organic light-emitting diodes (OLEDs). The substance enables high light yields and would be inexpensive to produce on a large scale - that means it is practically made for use in large-area room ...

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Light from stretchable sheets of atoms for quantum technologies

Largest spectral, color-tuning range from an atomically thin quantum system demonstrated

20-Apr-2020

The researchers say their results, using an atomically thin material, hexagonal boron nitride, constitute a significant step forward in understanding light-matter interactions of quantum systems in 2D materials, and the journey towards scalable on-chip devices for quantum technologies. The study ...

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Artificial solid fog material creates pleasant laser light

Extremely porous material made of "white graphene" for new laser light applications

20-Mar-2020

With a porosity of 99.99 %, it consists practically only of air, making it one of the lightest materials in the world: Aerobornitride is the name of the material developed by an international research team led by Kiel University. The scientists assume that they have thereby created a central ...

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LEDs from bacterial production

Sustainable light sources

26-Feb-2020

In the FET Open project ENABLED, TU Graz protein-designer Gustav Oberdorfer is working together with researchers from Spain and Italy on environmentally friendly and inexpensive light-emitting diodes. The basis for this vision is being laid at the Institute of Biochemistry at Graz University of ...

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Platelets instead of spheres make screens more economical

23-Jan-2020

ETH scientists have further developed QLED technology for screens. They have produced light sources that for the first time emit high-​intensity light in only one direction. This reduces scattering losses, which makes the technology extremely energy efficient. QLED screens have been on the market ...

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Nano bulb lights novel path

Rice University engineers create tunable, nanoscale, incandescent light source

23-Sep-2019

What may be viewed as the world's smallest incandescent lightbulb is shining in a Rice University engineering laboratory with the promise of advances in sensing, photonics and perhaps computing platforms beyond the limitations of silicon. Gururaj Naik of Rice's Brown School of Engineering and ...

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Light in the nanoworld

Quantum light sources pave the way for optical circuits

06-Aug-2019

An international team headed up by Alexander Holleitner and Jonathan Finley, physicists at the Technical University of Munich (TUM), has succeeded in placing light sources in atomically thin material layers with an accuracy of just a few nanometers. The new method allows for a multitude of ...

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New technology for warm white LEDs

27-Feb-2019

Light emitting diodes (LEDs) provide significant energy savings over conventional light sources. In terms of light quality, however, conventional lighting solutions are still superior to LEDs as the latter are unable to reproduce the entire color spectrum. Most importantly, LEDs lack an efficient ...

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Innovative sensing technique could improve greenhouse gas analysis

Innovative sensing technique could improve greenhouse gas analysis

12-Oct-2018

An international team of researchers has used an unconventional imaging technique known as ghost imaging to make spectroscopic measurements of a gas molecule. The new approach by scientists at Tampere University of Technology in Finland, the University of Eastern Finland and the University of ...

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Quantum Dot White LEDs Achieve Record Efficiency

16-Jul-2018

Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power to generate light. With further development, the new LEDs could reach ...

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