Oleg Losev

Oleg Losev (1903–1988) was a Soviet scientist and inventor who is often recognized for his pioneering work in the field of optoelectronics. He is best known for his research on light-emitting diodes (LEDs) and for his contributions to the development of semiconductor devices. In the 1920s, Losev created some of the first practical light-emitting diodes using silicon carbide, which emitted visible light when an electric current passed through them.