The barrier voltage of PN junction for germanium is about_________
Right Answer is:
⇒ The opposite charges that build upon each side of the junction create a voltage, referred to as the barrier voltage.
⇒ It can be represented as an external voltage source, even though it exists across the PN junction.
⇒ The barrier voltage is quite small, measuring only several tenths of a volt.
⇒ Typically, the barrier voltage is 0.3 V for a germanium PN junction and 0.7 V for a silicon PN junction.
⇒ This voltage becomes apparent when an external voltage source is applied.
⇒ A diode requires that the potential barrier voltage of its PN junction must be overcome before it can be forward-biased.