>>Although red and green LEDs had been around for many years, blue LEDs were a long-standing challenge for scientists in both academia and industry. Without them, the three colours could not be mixed to produce white light in lamps, as well as in computers and TV screens. Now blue LEDs are found in peoples pockets around the world, inside the lights and screens of smartphones. White LED lamps, meanwhile, deliver white light to offices and households around the world. They use much less energy than both incandescent and fluorescent lamps. In its award citation, the Nobel committee declared, Incandescent light bulbs lit the 20th Century; the 21st Century will be lit by LED lamps. Because a quarter of the worlds energy is used for lighting, energy-efficient lamps form an important part of the effort to help slow carbon dioxide emissions worldwide. Professor Sir Colin Humphreys from the University of Cambridge commented: This is a tremendous achievement and Akasaki, Amano and Nakamura are very worthy winners. Their invention of efficient blue LEDs has paved the way for the development of bright, cost effective and, importantly, energy efficient white lighting.
Posted on: Tue, 07 Oct 2014 11:35:29 +0000
Trending Topics
Recently Viewed Topics
© 2015