Silicon is a semiconductor. If a small amount of As is added to it, then its electrical conductivity

Is it difficult to make an intrinsic semiconductor? Name two factors on which the electrical conductivity of intrinsic semiconductor at a given temperature depends. How does the conductivity of a semiconductor change with the rise in its temperature?

when the temperature of a semiconductor is increased , its electrical conductivity___.

The electrical conductivity of semiconductors

In a p-type semiconductor, the electrical conduction is due to