Without applying any voltageforward or reverse across its terminals are said to be in equilibrium modezero bias mode. Under the unbiased condition the diode consists of both p type and n type semiconductor material and the process of diffusion takes place. Zero Bias Pnjunction Is A Boundary Or Interface Between Energy Band Diagram Of P N Junction Diode Lessons Tes Teach Working Of Pn Junction Diode With Biasing Characteristics However the potential barrier helps minority carriers few free electrons in the p region and few holes in the n region to drift across the junction. Pn junction diode zero bias . Zero biased condition in p n junction diode zero bias is the condition of the diode without any external supply. If the impurities added to p type and n type semiconductor materials are not uniform then at one region large number of charge carriers are present
