NEETChemistrySolid State
Why does the electrical conductivity of semiconductors increase with rise in temperature?
Options
- ABecause higher temperatures introduce impurities into the semiconductor.
- BBecause semiconductors naturally become more conductive as they heat up.
- CBecause elevated temperatures cause the semiconductor crystal to become more ordered.
- DBecause electrons from the valence band can jump to the conduction band on increasing temperature.
Correct answer
D. Because electrons from the valence band can jump to the conduction band on increasing temperature.
Step-by-step solution
Correct Option is : (D) Because electrons from the valence band can jump to the conduction band on increasing temperature.