# What are typical barrier voltage for a germanium and a silicon diode?

Page Contents

## What are typical barrier voltage for a germanium and a silicon diode?

The barrier potential of germanium is approximately 0.3 V, and of silicon is 0.7 V.

## What is the barrier voltage of silicon?

0.7V
In the case of silicon, its potential barrier is 0.7V. That means if we need to work a silicon diode, then we must apply a voltage of minimum 0.7V to make it work.

## What is the barrier voltage across a germanium diode?

Recall that at room temperature the barrier potential is approximately 0.7V for silicon diodes and 0.3V for germanium diodes.

## What is potential barrier voltage in a P-N junction?

The potential difference required for the electrons to be passed across the electric field is called the potential barrier. The barrier potential of a P-N junction depends on the type of material, amount of doping and temperature of the semiconductor. For silicon it is about 0.7V, for germanium, it is about 0.3V.

## What is the formula of barrier potential?

The barrier potential for pn junctions is given by following relation,Vbi = Vt ln(Na*Nd/ni²) which is normally 0.2V for Ge and 0.8V for Si.

## Which is the correct definition of barrier voltage?

barrier voltage. [′bar·ē·ər ‚vōl·tij] (electronics) The voltage necessary to cause electrical conduction in a junction of two dissimilar materials, such as pn junction diode.

## What is the barrier voltage in p-n junction?

Originally Answered: What is the barrier voltage? Barrier voltage, or barrier potential, is the minimum voltage required to start current in P-N junction of semiconductors. It is the voltage to start current through a joint of two dissimilar materials.

## What is the barrier potential of a diode?

It is the voltage to start current through a joint of two dissimilar materials. In diodes the barrier potential varies from 0.3 V to 0.7 V depending upon the semiconductor materials. Doctor: “Doing this every morning can snap back sagging skin”. Beverly Hills surgeon reveals at home fix (no creams needed). You dismissed this ad.

## What are the barrier voltages for germanium and silicon?

“The barrier voltage is the amount of electromotive force required to start current through the P-N junction. Barrier voltages for silicon typically range from 0.5 – 0.7 volts. Barrier voltages for germanium typically range from 0.2 – 0.3 volts. ” What do you need to know? Ask the community and find the answer to your study questions!