What material junction did Nick Holonyak Jr. use for the first practical, visible (red) LED in 1962?
Answer
Gallium arsenide phosphide (GaAsP)
Nick Holonyak Jr. developed his significant red-light-emitting diode using a gallium arsenide phosphide (GaAsP) semiconductor junction.
#Videos
History of LED Lights - How do they Work? - YouTube
Related Questions
Who first documented the observation of electroluminescence in 1907?What material junction did Nick Holonyak Jr. use for the first practical, visible (red) LED in 1962?What primary factor stalled the full realization of LED lighting for nearly three decades after the red LED was invented?What substance did Shuji Nakamura utilize to bridge the material science gap and create the high-brightness blue LED?How much of the electrical energy consumed by a typical incandescent bulb is converted directly into heat?Which engineering approach for creating white light relies on the blue LED light striking a yellow-emitting coating?What were the earliest commercial uses for the initial red and infrared LEDs developed in the 1960s?What scientific principle allows LEDs to be dramatically more energy-efficient than incandescent bulbs?Why are "Daylight" labeled white LED bulbs (5000K or higher) sometimes perceived as having a sterile appearance?Besides Holonyak and Nakamura, who was recognized with the 2014 Nobel Prize for work related to LED development?Which lighting technology has an estimated lifespan of 8,000–10,000 hours according to the comparison table?