What are donor impurity atoms and acceptor impurity atoms?
Text Solution
Verified by Experts
The donor impurity atoms are of valeance five like As, P and Sb. The acceptor impurity atoms are of valence three like B, Al, Ga and In.
Topper's Solved these Questions
ELECTRONIC DEVICES
PRADEEP|Exercise SAMPLE PROBLEM|2 Videos
ELECTRONIC DEVICES
PRADEEP|Exercise CONCEPTUAL PROBLEMS|1 Videos
ELECTROMAGNETIC WAVES
PRADEEP|Exercise II Focus multiple choice question|5 Videos
ELECTROSTATICS
PRADEEP|Exercise ASSERTION-REASON TYPE QUESTIONS|2 Videos
Similar Questions
Explore conceptually related problems
What are impurity defects ? Explain.
Donor type impurity is found in
(a) Find the conductivity of intrinsic silon at 300K . It is given that n_(i) at 300K in silicon is 1.5x10^(10)//cm ^(3) and the mobilities of electrons and holes in silicion are 1300cm^(2)//V-sec and 500 cm^(2)//V-sec respectively. (b) if donor type impurity is added to the extent of 1 impurity atom in 10^(8) sillicon atoms, find the conductivity. (c ) if acceptor inpurity is added to the extent of 1 impurity atom in 10^(8) silicon atoms,find the conductivuity. Given: number of atoms//m^(3) for Si=5xx10^(28)
Draw the "energy bands" diagram for a (i) pure semiconductor (ii) insulator. How does the energy band, foe a pure semiconductor, get affected when this semiconductor is doped with an acceptor impurity donor impurity? Hence discuss why the 'holes' and the 'electrons' respectively, become the 'majority charge carriers' in these two cases.
The removal of impurities from an ore
The element that can be used as acceptor impurity to dope silicon is
In extrinsic P and N - type, semiconductor materials, the ratio of the impurity atoms to the pure semiconductor atoms is about
