Understanding Pn Junction Diodes: A Comprehensive Guide To Electronics Fundamentals
A p-n junction arises when p-type (hole-rich) and n-type (electron-rich) semiconductors join. Diffusion creates a depletion region, a charge-depleted zone. A built-in potential develops, influencing current flow. Forward bias reduces the depletion region, allowing majority carrier injection and current flow. Reverse bias widens it, blocking current. The diode’s current vs. voltage characteristics depend on these…