Tags: blue | led | invention | efficient | lighting | nobel

Blue LED's Invention Leads to Efficient Lighting and a Nobel

By    |   Wednesday, 08 Oct 2014 07:32 AM

The inventors of the blue LED, which became the final piece of the puzzle of creating energy-efficient white light bulbs, have been awarded the Nobel Prize for physics.

Shuji Nakamura of the University of California in Santa Barbara, along with Isamu Akasaki and Hiroshi Amano of the University of Nagoya in Japan, were given the $1.1 million prize for "the invention of efficient blue light-emitting diodes (LEDs), which has enabled bright and energy-saving white light sources," per the Royal Swedish Academy of Sciences, according to The New York Times.

The academy said that while other scientists were able to produce red and green diodes, the lack of blue diodes prevented white light from being produced – until the award-winning physicists discovered a method to produce blue light beams from semiconductors in the early 1990s.

"In the spirit of Alfred Nobel, the Prize rewards an invention of greatest benefit to mankind; using blue LEDs, white light can be created in a new way," the academy said in a statement. "With the advent of LED lamps we now have more long-lasting and more efficient alternatives to older light sources."

The scientific breakthrough came after 30 years of trying to create what is now the LED lamp, said the academy.

"They succeeded where everyone else had failed," said the academy. "Their inventions were revolutionary. Incandescent light bulbs lit the 20th century; the 21st century will be lit by LED lamps. … The LED lamp holds great promise for increasing the quality of life for over 1.5 billion people around the world who lack access to electricity grids: due to low power requirements it can be powered by cheap local solar power."

The Nobel Prize committee chair, Per Delsing of the Chalmers University of Technology in Gothenburg, Sweden, told the BBC News that the physicists' determination to find a solution was of impressive note.

"What's fascinating is that a lot of big companies really tried to do this and they failed," said Delsing. "But these guys persisted and they tried and tried again – and eventually they actually succeeded."

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The inventors of the blue LED, which became the final piece of the puzzle of creating energy-efficient white light bulbs, have been awarded the Nobel Prize for physics.
blue, led, invention, efficient, lighting, nobel
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2014-32-08
Wednesday, 08 Oct 2014 07:32 AM
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