"Blue chip" make white LED light ten thousand

        Although the white LED light as bright warm sunlight general, but it has a purely "blue core." LED is a semiconductor light-emitting diodes. Typically, white LED light is a blue-emitting LED chip and can be issued under blue light yellow light conversion material. Blue light fluorescent materials issued after the chip is powered becomes yellow, the yellow and blue mixed get the remaining white.

 

1960's and 1970's, the red and green LED have been invented, but the other three primary colors of white and sea - blue LED has been unable to obtain. Blu-ray relative to the red and green light, the photon energy higher, suitable for the production of blue LED material growth is difficult, after a lot of research institutions are frustrated gave up. But some people have so little perseverance, and finally created a miracle. In 1989, Japan's Hiroshi Amano, Isamu Akasaki and mentoring to overcome the difficulties for the first time developed a blue LED. At the time, the blue LED light is very weak, there is no practical value, but it inspired hopes of blue LED research enthusiasm and hope. In 1993, Nichia working Shuji Nakamura successfully developed a high-brightness blue LED technology to make the blue LED to practical, real opening of the LED lighting era. Their persistence and dedication, and ultimately impossible to get rid of the 20th century, the blue LED prophecy.

 

Achievement blue LED white LED lighting, white LED turn blue LED Power topped the 2014 Nobel Prize in Physics podium. Showing its extraordinary significance. We can do a calculation to learn more about changing the blue LED under Nobel aura brings to our lives. According to incomplete statistics, the world consumes about 20 trillion kwh of electricity per year, of which about 19% for lighting, if all incandescent (electro-optical conversion rate of about 10 percent), fluorescent (electro-optical conversion rate of about 30%) replaced White LED energy saving lamps (electro-optical conversion efficiency of 50% or more), then the annual global savings of at least 1.52 trillion kwh of electricity, also with respect to the reduction of approximately 500 million tons of coal and reduce carbon dioxide emissions by about 1.3 billion tons, to reduce sulfur dioxide emissions by about 420 tons. These data demonstrate a real great wisdom and great energy little blue core. We have reason to believe, given the blue core white lights will illuminate ten thousand!