Question

What is barrier potential?

Options

• The small minority-carrier current in reverse bias

• The potential difference developed across the depletion layer due to immobile ions

• The motion of charge carriers under the influence of an electric field

• The ratio of voltage to current at any operating point of a diode

Answer 1

Immobile ions produce a potential difference across the depletion layer called the barrier potential. This potential opposes further diffusion of charge carriers.