Which elements are doped In p-type semiconductor?

When group III elements such as boron and gallium are doped in group IV elements (Si or Ge), p-type of semiconductor is obtained.

What is p-type and n-type doping explain with band diagram?

Bands for Doped Semiconductors In n-type material there are electron energy levels near the top of the band gap so that they can be easily excited into the conduction band. In p-type material, extra holes in the band gap allow excitation of valence band electrons, leaving mobile holes in the valence band.

How is p-type semiconductor material obtained with doping?

​EXPLANATION: When a trivalent impurity is doped in an intrinsic semiconductor (silicon) then we get a P-type semiconductor. For example: gallium, indium. In a p-type semiconductor, holes are generated because the trivalent impurity atom has one less electron than the surrounding silicon atom.

What are the doping materials for p-type semiconductor material?

A p-type semiconductor is an intrinsic semiconductor doped with boron (B) or indium (In). Silicon of Group IV has four valence electrons and boron of Group III has three valence electrons.

What is doped material?

In semiconductor production, doping is the intentional introduction of impurities into an intrinsic semiconductor for the purpose of modulating its electrical, optical and structural properties. The doped material is referred to as an extrinsic semiconductor.

What is p-type doping?

In p-type doping, boron or gallium is used as the dopant. These elements each have three electrons in their outer orbitals. When they are mixed into the silicon lattice, they form ‘holes’ in the valence band of silicon atoms.

What is a type of doping material?

Two of the most important materials silicon can be doped with, are boron (3 valence electrons = 3-valent) and phosphorus (5 valence electrons = 5-valent). Other materials are aluminum, indium (3-valent) and arsenic, antimony (5-valent).

Why semiconductors are doped?

Solution : The doping is done in semiconductor to increase the number of mobile electrons//holes and hence to increase the conductivity of semiconductor.

What type of doping is needed for p-type and n-type semiconductor?

Semiconductor Doping There are two types of dopants, n-type (“n” for negative), and p-type (“p” for positive) dopants. n-type dopants act as electron donors and have extra valence electrons with energies very close to the conduction band.