Question

Difference between p-type and n-type semiconductors materials..

Answer 1

On the basis of this extrinsicsemiconductors are of two types: (i) P type semiconductor material: In thistype of semiconductor we add trivalent impurities such as boron, aluminium, gallium etc to an intrinsicsemiconductor creates deficiencies ofvalence electrons called holes.

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Answer 2

n-type Semi-Conductor:-

# It is an extrinsic semi-conductor which is obtained by doping the impurity atoms of Vth group of the periodic table to the pure Ge and Si semi-conductor.

# The impurity atoms added, provide extra electrons in the structure and are called donor atoms.

#The electrons are majority carriers and holes are minority carriers.

#The electrons density (ne) is much greater than the hole density (nh) i.e.>> nh.

#The donor energy level is close to the conduction band and for away from the valence band.

#The Fermi-energy level lies in between the donor energy level and conduction band.

P-type Semi-Conductor:-

#It is an extrinsic semi-conductor which is obtained by doping the impurity atoms of III group of the periodic table to the pure Ge and Si semi-conductor.

#The impurity atoms added, create vaccines of electrons (i.e. holes) in the structure and are called acceptor atoms.

#The holes are majority carriers and electrons are minority carriers.

#The holes density (nh) is much greater than the electrons density (ne) i.e.>> ne.

 

#The acceptor energy level is close to the Valence band and for away from the Conduction band.

#The Fermi-energy level lies in between the acceptor energy level and valence band.

 

#These are the differences between n type and p type semiconductors. If you know more, then please discuss.

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