Semi-conductors

  • Explanations:

  • 'Doping' happens with type 'n-type' or 'p-type', but regardless of doping, the Emitter, Base and Collector are electrically neutral. The only polarization that happens is when a 'p-type' and an 'n-type' approach each other, which creates an "electrical barrier" due to the donation of electrons from the 'n-type' to the 'p-type'; this happens for example in the Base <-> Collector or Base <-> Emitter of Transistors.