Answer to Question #218488 in Electric Circuits for Ojsmart

Question

1. How will one classify an electrical material as
I. conductor
II. Semiconductor
III. Insulator
Using the energy bandgap theory.

2. List three examples of each of the material (I-III)

Answer 1

Conductor:-

Band gap = 0

Current flow=free electrons

Ex:-fe,cu, Ag

Semiconductor:-

Bandgap is very low

Conduction band and velence band overlap each other

Current flow hole and negative charge particle

Ex:- si ,Ge GaAs

Insulator:-

Band gap~5to7 eV

Current not flow this tye material

Ex:-glass , diamond, plastic

Runner, dry air