Introducing a defect in a crystal by adding impurity is called …….. .

A… is called introducing a defect in a crystal by adding impurity. Here A refers to

What is an impurity defect?

When do impurity defects airse.

The conductivity of intrinsic semiconductors can be increased by adding a suitable impurity. This process is called __(P)__. This can be done with an impurity which is __(Q)_ rich or deficient as compared to the semiconductor. Such impurities introduce __(R)__ defects in them. Electron rich impurities result in __(S)__ type semiconductors while electron deficit impurities result in __(T)___ type semiconductors .

The conductivity of intrinsic semiconductors can be increased by adding a suitable impurity . This process is called underline(A) . This can be done with an impurity which is Such impurities introduce underline(B) rich or deficient as compared to the semiconductor. Such impurities introduce underline(C) defects in them. Electron rich impurities result in D type semiconductors while electron deficit impurities result in E type semiconductors .

A p-type semiconductor is (i) a silicon crystal doped with arsenic impurity (ii) a silicon crystal doped with aluminium impurity (iii) a germanium crystal doped with boron impurity (iv) a germanium crystal doped with phosphorus impurities.

What do you mean by defect in a crystal? What are point defects in a crystal?