Semiconductor Device

Introduction to semiconductors and semiconductors devices

Draw V-I characterictics of a p-n junction diode. Why does the reverse current show a sudden increase at the critical voltage? Name any semiconductor device which operates under the reverse bias in the breakdown region.

Assertion: In vacuum tubes (vales), vacuum is necessary for the movement of electrons between electrods otherwise electrons collide with air and loss their energy. Reason: In semiconductor devices, external heating or vacuum is not required.

Read the following statements. I. Battery-less phones can convert radio signals into power. II. The semiconductor device rectenna can be used to provide battery-less power only for smartphones. III. Wi-fi signals captured by an integrated antenna are converted into a DC current suitable for electronic circuits. Choose the correct option.

Semiconductor materials||Intrinsic semiconductor||Electrical conductivity OF intrinsic semiconductor doping||Extrinsic semiconductor