How Does a P Type Semiconductor Work

P-Type Semiconductors. A p-type (p for “positive”) semiconductor is created by adding a certain type of atom to the semiconductor in order to increase the number of free charge carriers. When the doping material is added, it takes away (accepts) weakly bound outer electrons from the semiconductor atoms.

What is p-type semiconductor?

A p-type semiconductor is an extrinsic type of semiconductor. When a trivalent impurity (like Boron, Aluminum etc.) is added to an intrinsic or pure semiconductor (silicon or germanium), it is said to be a p-type semiconductor. Trivalent impurities such as boron (B), gallium (Ga), indium (In), aluminum (Al) etc.

What are p-type semiconductor Give example?

Semiconductors like germanium or silicon doped with any of the trivalent atoms like boron, indium or gallium are called p-type semiconductors. … It provides the atoms to fill only three covalent bonds as it has only three valence electrons.