Nowadays, blue LEDs are taken for granted and it is easy to find them in the market. However, it took several decades and the effort of different engineers and researchers to develop an efficient blue LED. In fact, the inventors of the blue LED (Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura) earned the Nobel Prize in Physics in 2014 thanks to their creation. In this post, we explain why it took so long to manufacture a blue LED, the technical challenges that had to be faced, and why the inventors were awarded a Nobel Prize.
