Question

what is a semiconductor? describe the effect of temperature on semiconductors.

Answer 1

A solid substance that has a conductivity between that of an insulator and that of most metals, either due to the addition of an impurity or because of temperature effects

The conductivity of an intrinsic semiconductor increases with increase in temperature. The conductivity of an extrinsic semiconductors decreases with the increase in temperature, the number of majority carriers is nearly constant, but mobility decreases. Thus causes the conductivity to decrease.

Answer 2

Answer:

Semiconductors. Semiconductors are materials which have a conductivity between conductors (generally metals) and nonconductors or insulators (such as most ceramics). Semiconductors can be pure elements, such as silicon or germanium, or compounds such as gallium arsenide or cadmium selenide.

Explanation:

when their is a change in temperature ,it changes the electrical conductivity of semiconductors. At absolute zero temperature all the electrons of semiconductors are held tightly by the atoms