1. Lecture 7.0
Device Physics

2. Electronic Devices Passive Components Resistance (real #)
Conductor
Resistor
Battery
Active Components
Reactance (Imaginary #)
Capacitor
Inductor
Diode
Transistor
Surge Protector

3. Conductors Resistance, R=  L/A Capacitance Materials
C=oA/d
Materials
Metal Interconnects
Wire Lines
W, Al, Cu
Vias W
Gates

4. Metal Junctions Metal Interconnects Gates Wire Lines Vias
W, Al, Cu
Vias W
Gates
Equilibration of Ef
Difference in Work Functions

5. Resistors On Chip Circuit Board Resistors Low resistance
Silicon with dopants at a particular concentration
High resistance
Insulator with a specific size
Gate oxide-tunneling junction
Oxide Insulator between two conductors
Circuit Board Resistors

6. Capacitance
C=oA/d
=C/Co
=1+e
e =
electric
susceptibility

7. Capacitor Allows AC signal to pass Stops DC part of signal
Slow build-up of charge
Timing Circuits
Signal Integration
Reactance
Imaginary # for Resistance

8. Capacitors in Silicon Chips
SiO2
Si3N4
On Circuit Board
BaTiO3
(Pb,La)TiO3
Materials
SiO2
Si3N4
BaTiO3
(Pb,La)TiO3

9. Dielectric Constant

opt= (V/C)2
opt= n2
n=Refractive index

10. Circuit Board Capacitor
Ni Electrodes
BaTiO3 Dielectric =

11. On Chip Capacitor (Memory Chip)
An electric circuit element used to temporarily STORE a charge, consisting of TWO CONDUCTIVE plates separated and insulated from each other by a DIELECTRIC.

12. Void

13. Inductor What is it? Not used on Chip On Circuit Board Reactance
Coil of wire
Not used on Chip
On Circuit Board
Used often
Reactance
(imaginary # for resistance)

14. P-n junction One way flow of current Photo Diode Laser Diode bridge
Converts AC to DC
Photo Diode Laser

15. P-N Junction - Diode
N-type P-type Ef Ef

16. Diodes P-n junction One way flow of current Photo Diode Laser
Diode bridge
Converts AC to DC
Photo Diode Laser

17. Poisson’s Equation 2U = -/( o ) N side P side
n= - e Nd
P side
p=+ e Na
U=Φ = Potential (volt)

18. Poisson Eq. d2U/dx2 = -/(o)

19. P-N Junction (Diode) – no bias V
Thickness of depletion layers
Nd ln = Np lp
Current to equilibrate electrons from p zone to n zone due to competition of diffusion vs drift due to contact Ф.

20. Diode with Applied Voltage

21. P-N Junction (Diode) – with forward bias V
Current to equilibrated electrons from p zone to n zone.

22. P-N Junction (Diode) – with reverse bias V
Current to equilibrated electrons from p zone to n zone.

23. Diode Avalanche Breakdown

24. Diode – equivalent circuit