Researchers have designed and tested ‘human-centric’ LEDs that emit different wavelengths of blue light depending on whether it’s daytime or nighttime, reducing the disruptive effect artificial light ...

LEDs work by converting electrical energy into photons in a layer made of a semiconductor. Research into new semiconductor materials is key not only to further improving the energy efficiency of these ...

A new method for creating a highly useful chemical subunit eliminates the need for precious metals, potentially leading to the sustainable production of pharmaceuticals and electronics. Light-emitting ...

WEST LAFAYETTE, Ind. - A Purdue University study shows that targeting plants with red and blue LEDs provides energy-efficient lighting in contained environments, a finding that could advance the ...

Light-emitting diodes (LEDs) are so ubiquitous that it's easy to forget just how much society relies on these underappreciated technological wonders. Yet, the history of the LED goes back further than ...

A Rutgers-led team of scientists has developed an eco-friendly, very stable, ultra-bright material and used it to generate deep-blue light (emission at ~450 nm) in a light-emitting diode (LED), an ...

Light pollution blues: photographs of London taken on board the ISS in 2012 (left) and 2020 (right). The images show the whitening and brightening of the city. (Courtesy: A Sánchez de Miguel et ...