A small semiconductor that monitors or controls current or voltage passage while also amplifying, producing, and functioning as a switch/gate for these electrical signals.
A transistor's base comprises weakly doped, shrunk, and narrowed, such that practically all electrons introduced from the emitter permeate straight across the foundation to the collector junction without recombining with gaps.
The base width is maintained as narrow as possible in comparison to the recombination considerable distance.
Therefore, the nature of the base of the transistor must be opposite and thinner as compared to that of the collector and emitter.