The transistor is an electronic device invented for amplifying or switching electrical signals.At the end of 1947 at Bell Labs, a team led by William Shockley, along with John Bardeen and Walter Brattain, created the first working point-contact transistor. For this discovery, they received the 1956 Nobel Prize. The operating principle is based on the properties of semiconductor p-n junctions: the current through the junction can be controlled by the injection of minority charge carriers.
The first point-contact transistor was invented by John Bardeen and Walter Brattain on December 23, 1947, at Bell Labs under the leadership of William Shockley. Shockley developed the p-n junction theory in 1948 and proposed the bipolar planar transistor. In 1954, the silicon transistor appeared (Texas Instruments). In 1959, Robert Noyce and Jack Kilby independently created the integrated circuit, combining many transistors on a single chip, which marked the beginning of the microelectronics era.
Modern transistors are predominantly MOSFETs (metal-oxide-semiconductor), where the channel current is controlled by the gate voltage. Miniaturization (Moore's Law) has reached 3 nm technologies, but it faces quantum effects (tunneling through the gate dielectric) and the problem of heat dissipation. Limits of applicability: at the nanoscale, charge discreteness and quantum entanglement begin to manifest.
The basis of all microprocessors, memory, and amplifiers — from smartphones to satellites.
The first transistor was assembled on a piece of germanium with gold contacts pressed by a spring, and looked like a jumble of metal plates and paper clips. It was the size of a large coin, whereas today transistors in processors are smaller than a virus.
