Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 7 (Q.No. 5)
5.
An n type semiconductor is illuminated by a steady flux of photons with energy greater than the band gap energy. The change in conductivity Δσ obeys which relation?
[ Here, e is the electron charge, μn electron mobility, μp hole mobility, Δn (Δp) is the excess electron (hole) density ].
[ Here, e is the electron charge, μn electron mobility, μp hole mobility, Δn (Δp) is the excess electron (hole) density ].
Discussion:
3 comments Page 1 of 1.
Zulu Chungtia said:
5 years ago
B is actually correct, the conductance should be mobility inside the bracket.
TUP-taguig said:
7 years ago
Yeah its D. Since mobility and e are both constants so, if there will be a change in conductivity it is probably due to change in concentration of carriers.
Ajit said:
8 years ago
I think option D is correct.
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