Across
- 4. the introduction of a small amount of impurity in semiconductors
- 6. the free electrons trapped in the site of anion vacancies
Down
- 1. semiconductors which are used in pure form.
- 2. ,defect alters the density of a solid
- 3. Crystalline substances show different optical and electrical properties in different directions
- 5. The number of atoms in a unit cell of a simple cubic crystal