Question

Who invented the semiconductor?

Answer 1

1. A semiconductor is a material that has resistivity less than that of an insulator but greater than that of a conductor and unlike conductors, its resistivity decreases when the temperature increases.
2. In 1821, Thomas Johann Seebeck first observed properties shown by semiconductors.
3. In 1833, Michael Faraday observed that the resistance of silver sulfide decreased with the increment of temperature.
4. Several other experiments showcasing the properties of semiconductors were conducted throughout the 19th century.
5. The first-ever device that used semiconductors was a crystal detector by Ferdinand Braun in 1874.

Hence, Ferdinand Braun was effectively the first person to invent the semiconductor.