P-N JUNCTION THEORY AND THE JUNCTION TRANSISTOR
William J. Leivo · 1958
A theoretical discussion is presented of the P-N junction theory and the junction transistor. A P-N juncion is where the two regions of a Ge crystal meet, one side of which is P-type, the other N-type. An NPN junction transistor consists of a single crystal, one end of which is N-type, a middle section which is P-type, and the composite end which is N-type. Silicon and Ge are the semiconductors commonly used. (W.L.H.)