3.4 Schottky junction3.4.1 Schottky diodeFormation of a Schottky junction between a metal and an n-type semiconductor when m n.There is an electron-depleted region of a width W in which there are exposed positively charged donors, in other words, net positively space charge. Thisregion constitutes a space charge layer (SCL).The contact potential, called build-in potential Vo develops between the metal and the semiconductor.The build-in electric field Eo from the positive charges eventually prevents further accumulation of electrons.
