In which year did Akasaki invent the bright gallium nitride blue LED?
1989
1975
1999
2005
Answer
In 1989, Japanese physicist Isamu Akasaki invented the bright gallium nitride blue LED. This breakthrough enabled the development of high-efficiency blue LEDs, which are essential components in modern lighting and display technologies. Akasaki's invention revolutionized the field of optoelectronics and paved the way for the development of white LEDs, which are now widely used in a variety of applications.
Lighting the Future: The Isamu Akasaki Innovation Challenge
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