1.

The probbility of electrons to be found in the conduction band of an intrinsit semiconductor at a finile temperatureA. increase exponenially with increases band gapB. decreases exponenially with increases band gapC. decreases with increases temperatureD. is independent of the temperature and the band gap

Answer» Correct Answer - B
KEY CONCEPT: For a semi condactor `n = n_(0)e^(bar Eg//kT)` where `n_(0) = no ` of free electrons at absolute zero `n = no` of free electron at T kelvin, E_(g)= Energy gap , k = Boizmana constant` .
As E_(g) ` increase , `n` decrease exponentially.


Discussion

No Comment Found

Related InterviewSolutions