Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 1 (Q.No. 14)
14.
In a p type material the Fermi level is 0.3 eV above valence band. The concentration of acceptor atoms is increased. The new position of Fermi level is likely to be
Answer: Option
Explanation:
Addition of acceptor atom brings Fermi level closer to valence band.
Discussion:
12 comments Page 2 of 2.
Shobhit N Lal said:
7 years ago
If less amount of p-type material is added then Fermi level will slightly move towards valence band(.3eV to .28eV).
If more amount of p-type material is added then Fermi level will move even closer to valence band (.3eV to .1eV).
If further doping is increased then Fermi level enters valence band (below valence band)
So how can we say that .28eV is correct?
If more amount of p-type material is added then Fermi level will move even closer to valence band (.3eV to .1eV).
If further doping is increased then Fermi level enters valence band (below valence band)
So how can we say that .28eV is correct?
Bala Yesu said:
5 years ago
Fermi level of n-type semiconductor is above the valence band if you increase acceptor ions fermi level with is increased that's why Fermil level was close to the valence band.
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