Electronics - Semiconductor Principles - Discussion

Conductance and resistance are interrelated. Then how can we say the answer is only conductance?

Its conductivity not conductance.

Resistance is controlled by impurities. In general, add more impurities-->you get less resistance.

Question is about the electrical characteristics. So the answer is conductivity.

I can't understand please anyone give proper answer.

I don't understand, can I get more understandable reason. Please.

I also didn't get it. Please anyone give proper answer.

As we increase no of impurities to semiconductor it becomes conductor i.e., the resistivity decreases as impurities increases. So as we know conductivity increases if resistivity decreases.

All the above will be the answer because if conductivity is varied, all the other parameters will be varied.

An intrinsic semiconductor material is chemically very pure and possesses poor conductivity. It has equal numbers of negative carriers (electrons) and positive carriers (holes). A silicon crystal is different from an insulator because at any temperature above absolute zero temperature, there is a finite probability that an electron in the lattice will be knocked loose from its position, leaving behind an electron deficiency called a "hole".

If a voltage is applied, then both the electron and the hole can contribute to a small current flow.

The conductivity of a semiconductor can be modeled in terms of the band theory of solids. The band model of a semiconductor suggests that at ordinary temperatures there is a finite possibility that electrons can reach the conduction band and contribute to electrical conduction.

The term intrinsic here distinguishes between the properties of pure "intrinsic" silicon and the dramatically different properties of doped n-type or p-type.