Question

Answer any TWO of the following.
a) What is Semiconductor? Explain its type.​

Answer 1

Answer:

Semiconductors are materials that have properties of both normal conductors and insulators. Semiconductors fall into two broad categories: Intrinsic semiconductors are composed of only one kind of material; silicon and germanium are two examples. These are also called “undoped semiconductors” or “i-type semiconductors.

Answer 2

Explanation:

Semiconductor

QUICK FACTS

KEY PEOPLE

Duncan Haldane

Walter H. Brattain

Yves-André Rocard

RELATED TOPICS

Semiconductor device

Silicon

Germanium

Avalanche effect

Gunn effect

P-n junction

Trap

amounts of impurity atoms. For example, the addition of about 10 atoms of boron (known as a dopant) per million atoms of silicon can increase its electrical conductivity a thousandfold (partially accounting for the wide variability shown in the preceding figure).

conductivities

conductivities

Typical range of conductivities for insulators, semiconductors, and