Question

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Please answer these questions...

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Answer 1

Answer:

Question 11

N -type semiconductor -when the group 15 member are doped group 14 members they created in 1 moles on recombination which gives (-) charges are the semiconductor hence, it is called as N type semiconductor

P-type semiconductor -in the group 14 member are doped group 13 members they creates in 1 moles on recombination which gives (+) charge are the semiconductor hence, it is called as P type semiconductor

Answer 2

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.

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.

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