In a semiconductor, what happens to the conductivity as temperature increases? (

₹0.0

Question: In a semiconductor, what happens to the conductivity as temperature increases? (2021)

Options:

Correct Answer: Increases

Exam Year: 2021

Solution:

The conductivity of a semiconductor increases with temperature due to more charge carriers being available.

In a semiconductor, what happens to the conductivity as temperature increases? (2021)

In a semiconductor, what happens to the conductivity as temperature increases? (2021)

Step 1: Understand what conductivity means. Conductivity is how well a material can conduct electricity.
Step 2: Know that semiconductors are materials that can conduct electricity, but not as well as metals.
Step 3: Recognize that temperature affects the behavior of semiconductors.
Step 4: At low temperatures, there are fewer charge carriers (like electrons) available to conduct electricity.
Step 5: As the temperature increases, more charge carriers are generated in the semiconductor.
Step 6: With more charge carriers available, the semiconductor can conduct electricity better.
Step 7: Therefore, the conductivity of the semiconductor increases as the temperature rises.

Temperature Dependence of Conductivity – As temperature increases, the thermal energy allows more electrons to jump from the valence band to the conduction band, increasing the number of charge carriers and thus the conductivity.