2. Reverse biased PN junction p n p n

5. Reverse biased PN junction energy diagram

6. Voltage-dependent capacitor

8. Example 5.5 Consider a gallium arsenide PN junction at room temperature. Determine the junction capacitance with a reverse bias voltage of 5 V.

9. Example 5.5 Consider a gallium arsenide PN junction at room temperature. Determine the junction capacitance with a reverse bias voltage of 5 V.

10. Forward biased PN junction p n -+

11. Basic model – thermal equilibrium p n +-

12. Reverse biased PN junction energy diagram

13. Forward biased PN junction

14. Schottky barrier junction

15. Schottky barrier junction Energy levels before joining

16. Schottky barrier junction Thermal equilibrium - electrons depart leaving a region of ions – Fermi energies lineup

17. Schottky barrier junction Reverse bias conditions

18. Schottky barrier junction Forward bias conditions

19. Characteristics of a Schottky diode and a PN junction diode

20. Example 5.7 A silicon PN junction is forward biased at room temperature. Determine the voltage that is required to induce a particular diode current.

27. You think that you had a bad day.

30. Simple three-dimensional unit cell