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Isamu Akasaki, Nobel-prizewinning inventor of the blue LED – obituary


Isamu Akasaki
Credit: TORU YAMANAKA/AFP
Isamu Akasaki, who has died aged 92, shared the 2014 Nobel Prize in physics, with Hiroshi Amano and Shuji Nakamura, for their invention of blue light-emitting diodes (LEDs), an energy-efficient technology now used in everything from light bulbs to televisions, computer screens, smartphones and Christmas tree lights.
In an LED, light is produced when negative electrons combine with positive “holes” in thin layers of semiconductors. Red LEDs became available in the 1960s and were widely used in calculators and digital watches. Green LEDs were developed around the same time. But for many years scientists struggled to create blue LEDs – the only ones capable of being used to produce white light. ....

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Japan Scientist Given Nobel for 'Revolutionary' LED Lamp Dies - New Delhi Times - India's Only International Newspaper

Japanese Nobel laureate Isamu Akasaki, who won the physics prize for pioneering energy-efficient LED lighting a weapon against global warming and poverty has died aged 92, his university said Friday. Akasaki won the 2014 prize with two other scientists, Hiroshi Amano and Shuji Nakamura. Together they developed the blue light-emitting diode, described as… ....

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Japan scientist given Nobel for 'revolutionary' LED lamp dies

Japanese Nobel laureate Isamu Akasaki, who won the physics prize for pioneering energy-efficient LED lighting a weapon against global warming and poverty has died aged 92, his university said Friday. Akasaki won the 2014 prize with two other scientists, Hiroshi Amano and Shuji Nakamura. Together they developed the blue light-emitting diode, described as a "revolutionary" invention by the Nobel jury. He died of pneumonia on Thursday morning. ....

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