Question

Which of the following statements is true about semiconductors?

• A. Impurity of lower group creates $n$-type semiconductors
• B. Impurity of higher group creates $p$-type semiconductors
• C. Extrinsic semiconductors are formed by doping impurity
• D. Intrinsic semiconductors become conductors when temperature is raised

Answer 1

Answer: (D)

Intrinsic semiconductors are insulators at room temperature and become semiconductors when temperature is raised.