What are immobile ions?

Immobile ions are not able to move or fixed of ions e.i positive or negative ions. As a result electrons, it leaves behind an immobile positive ion or donor ion on N side and develops positive charge layer.

What are positive and negatively charged ions called?

Positively charged ions are called cations; negatively charged ions, anions.

What are the immobile ions in pn junction?

When a PN junction is formed, the P region has mobile holes (+) and immobile negatively charged ions. N region has mobile electrons (-) and immobile positively charged ions. The whole arrangement is electrically neutral.

What is mobile and immobile charges?

The mobile charge can move in and out of the semiconductor, while the fixed charge does not move at all. Holes and electrons are movable whereas ions are not movable hence they are immobile.

What consists of depletion layer?

Note: The depletion layer consists of both electrons and protons but they are immobile in nature therefore the correct answer would be immobile ions. The donor and acceptor atom get a positive and negative charge due to which the PN junction forms.

What is a positively charged ion?

A cation is an ion with positive charge, which means it has more protons (positively-charged particles) than electrons (negatively-charged particles). Cations are formed when an atom loses one or more electrons: the loss of the negatively-charged electron(s) results in an overall positive charge.

Why are acceptor ions negative?

Why does an acceptor ion possess a negative charge? – Quora. tl;dr: The oxygen (O) atom has a large electron affinity, which is increased when bonded to a hydrogen (H) atom. So, whenever an OH group is attached to a molecule, it tends to pull electrons from the rest of the molecule.

Why are holes positive?

Holes are considered positively charged because of the relation between their velocity and the electric current: when they move right, the current points right. It is theoretically possible to only work in terms of electrons: conduction band electrons and valence band electrons.

Are immobile elements plant?

The elements which move throughout the plant are called mobile elements. The examples of immobile elements are boron (Bo), copper (Cu), calcium (Ca), chlorine (Cl), cobalt (Co), iron (Fe), manganese (Mn), molybdenum (Mo), silicon (Si), sulfur (S) and zinc (Zn).

What is positive type semiconductor?

A semiconductor doped with an acceptor. An excess hole is now present. Because an acceptor donates excess holes, which are considered to be positively charged, a semiconductor that has been doped with an acceptor is called a p-type semiconductor; “p” stands for positive.