Intrinsic Semiconductors (1).pptx

Semiconductors

1. Intrinsic Semiconductors

2. Does not have any kind of impurities. Intrinsic Semiconductors

3. Does not have any kind of impurities. Behaves as an Insulator at 0k. Intrinsic Semiconductors

4. Does not have any kind of impurities. Behaves as an Insulator at 0k. Behaves as a Conductor at higher temperature. Intrinsic Semiconductors

5. Does not have any kind of impurities. Behaves as an Insulator at 0k. Behaves as a Conductor at higher temperature. Eg - Germanium and Silicon (4 th group elements) - possess diamond cubic crystalline structure. Intrinsic Semiconductors

6. Does not have any kind of impurities. Behaves as an Insulator at 0k. Behaves as a Conductor at higher temperature. Eg - Germanium and Silicon (4 th group elements) - possess diamond cubic crystalline structure. Intrinsic Semiconductors

7. Si Si Si Si Si Intrinsic Semiconductors

8. Si Si Si Si Si Valence orbit Intrinsic Semiconductors

9. Si Si Si Si Si Valence Orbit Covalent bonds Intrinsic Semiconductors

10. E E v Valence band E c Conduction band E c Electron energy Distance Intrinsic Semiconductors

11. E E f E v Valence band E c Conduction band E c Electron energy Distance Fermi energy level Intrinsic Semiconductors

12. E E f E v Valence band E c Conduction band E c Electron energy Distance Fermi energy level Energy Intrinsic Semiconductors

13. E E f E v Valence band E c Conduction band E c Electron energy Distance KE of Electron = E - E c KE of Hole = E v - E Fermi energy level Intrinsic Semiconductors