Why It Was Almost Impossible to Make the Blue LED

The blue LED was supposed to be impossible—until a young engineer proposed a moonshot idea. Head to to start your free 30-day trial, and the first 200 people get 20% off an annual premium subscription. Special thanks to our Patreon supporters! Join this list to help us keep our videos free, forever: Huge thanks to the UC Santa Barbara Materials Dept () for taking us around. Thanks to Álvaro Bermejillo Seco for reviewing the science. Thanks to these especially helpful sources: Nobel Prize Biography - Shuji Nakamura - Johnstone, B. (2015). Brilliant!. Prometheus Books. - Nakamura, S., Pearton, S., & Fasol, G. (2010). The Blue Laser Diode: The Complete Story. Springer. - ▀▀▀ References: