FORWARD BIAS OF A P-N JUNCTION

n forward bias, the holes in the p-region are shifted to the n-region and electrons in the n- region shifted to the p-region because of repulsion with battery terminals. As a result, the thickness of the depletion layer is decreased because the intensity of +ve and -ve ions is decreased in the depletion layer because the electrons are came into this layer through the connecting wires and goes near to the +ve ions and hence +ve ions disappeared similarly at -ve ions. The electrons are attracted by battery +ve terminal and hence -ve ions disappeared.Thus, the depletion layer thickness decreases as a result of the charge carriers easily cross that layer. Hence conduction exist through the pn junction diode.