Physics · Semiconductor Electronics
Which of the following statements about extrinsic semiconductors is correct regarding the effect of temperature on their carrier concentration and conductivity?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The conductivity of n-type semiconductors increases with a decrease in temperature due to fewer free electrons.
- 2In both n-type and p-type semiconductors, conductivity decreases continuously at all temperatures with an increasing temperature.
- 3Temperature has no effect on the conductivity of extrinsic semiconductors once they are doped.
- 4In p-type semiconductors, increasing the temperature leads to an increase in the number of intrinsic holes and electrons as more electrons get excited across the bandgap.✓
Correct answer
In p-type semiconductors, increasing the temperature leads to an increase in the number of intrinsic holes and electrons as more electrons get excited across the bandgap.
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