... ELEC 254SEMICONDUCTOR (PN JUNCTION) DIODESPhysically, diodes are formed by the interface between two regions of oppositely dopedsemiconductor (i.e., pn junction) and are thus, structurally, ... follows that zero power dissipation occurs in an ideal diode.2. Real DiodeThe physics of real pn junctions leads to the following (non-ideal) iv-characteristics:(see Figs. 3.7, 3.8 in S&S...