Stay updated with breaking news from Ben cotts. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.
Empire wind energy projects facing local headwinds in Long Beach newsday.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from newsday.com Daily Mail and Mail on Sunday newspapers.
Scientists Uncover Process that Stands in the Way of Making Quantum Dots Brighter iconnect007.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from iconnect007.com Daily Mail and Mail on Sunday newspapers.
Scientists uncover a process that stands in the way of making quantum dots brighter Bright semiconductor nanocrystals known as quantum dots give QLED TV screens their vibrant colors. But attempts to increase the intensity of that light generate heat instead, reducing the dots’ light-producing efficiency. A new study explains why, and the results have broad implications for developing future quantum and photonics technologies where light replaces electrons in computers and fluids in refrigerators, for example. In a QLED TV screen, dots absorb blue light and turn it into green or red. At the low energies where TV screens operate, this conversion of light from one color to another is virtually 100% efficient. But at the higher excitation energies required for brighter screens and other technologies, the efficiency drops off sharply. Researchers had theories about why this happens, but no one had ever observed it at the atomic scale until now. ....