Researchers have designed smart, color-controllable white light devices from quantum dots – tiny semiconductors just a few billionths of a meter in size – which are more efficient and have better color saturation than standard LEDs, and can dynamically reproduce daylight conditions in a single light
The researchers, from the University of Cambridge, designed the next-generation smart lighting system using a combination of nanotechnology, color science, advanced computational methods, electronics, and a unique fabrication process.
Quantum dots have been studied and developed as light sources since the 1990s, due to their high color tunability and color purity. Due to their unique optoelectronic properties, they show excellent color performance in both wide color controllability and high color rendering capability. The QD-LED system uses multiple primary colors – beyond the commonly used red, green, and blue – to more accurately mimic white light. By choosing quantum dots of a specific size – between three and 30 nanometres in diameter – the researchers were able to overcome some of the practical limitations of LEDs and achieve the emission wavelengths they needed to test their predictions.
The design could pave the way to more efficient, more accurate smart lighting. In an LED smart bulb, the three LEDs must be controlled individually to achieve a given color. In the QD-LED system, all the quantum dots are driven by a single common control voltage to achieve the full color temperature range.
France Dernières Nouvelles, France Actualités
Similar News:Vous pouvez également lire des articles d'actualité similaires à celui-ci que nous avons collectés auprès d'autres sources d'information.
Devastating testimony from friends at Kristin Smart murder trialAlthough Kristin Smart’s body has never been found, the trial for her murder is finally underway.
Lire la suite »
4 Smart Strategies This Mom Uses to Get Her Family Ready to Go Back to SchoolGabrielle Flowers Rader relies on a few smart organizational tips to prepare her family for the back-to-school season.
Lire la suite »
Natural Cycles now accepts temperature data from the Oura smart ringThe app uses temperature to predict fertility.
Lire la suite »
Product-Led Content Should Not Feel Like Marketing | HackerNoonMost founders are afraid to sell through their content because it feels too much like marketing. Here's how to promote your product without sounding salesy.
Lire la suite »
Gary Schroen, officer who led CIA's first incursion into Afghanistan after 9/11, dies at 80Gary Schroen, the man who led the CIA's first incursion into Afghanistan after the 9/11 terrorist attack, has died of a stroke, the CIA announced on Monday. He was 80.
Lire la suite »