The probability of electrons to be found in the conduction band of an intrinsic semiconductor at finite temperature is which of the following?(a) Increases exponentially with the increasing bandgap(b) Decreases exponentially with the increasing bandgap(c) Decreases with increasing temperature(d) Is independent of the temperature and the bandgapI had been asked this question during an internship interview.Enquiry is from Intrinsic Semiconductor in portion Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

The probability of electrons to be found in the conduction band of an

1.	The probability of electrons to be found in the conduction band of an intrinsic semiconductor at finite temperature is which of the following?(a) Increases exponentially with the increasing bandgap(b) Decreases exponentially with the increasing bandgap(c) Decreases with increasing temperature(d) Is independent of the temperature and the bandgapI had been asked this question during an internship interview.Enquiry is from Intrinsic Semiconductor in portion Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12
Answer» The correct option is (b) Decreases exponentially with the increasing BANDGAP Easiest explanation: At a finite temperature, the probability of jumping an ELECTRON from the valence BAND to the conduction band decreases exponentially with the increasing bandgap (Eg). The other OPTIONS are not valid.

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