1. DILBERT

2. Dilbert

3. Best Buy

5. Engr 1202 ECE Grading Spreadsheet

6. Materials
Conductive materials – valence band overlaps the conduction band
Non conductive materials – valence band is separated from conduction band and electrons can not easily get to the conduction band
Semiconductor materials – conduction band is close to valence band and electrons can easily jump from the valence band to the conduction band with an energy source

7. Silicon
Silicon is an element
Silicon is the first or second most abundant element on the earth
Sand is a form of silicon
Silicon is know as a semiconductor because under certain conditions it can conduct electricity (electrons)
Silicon is the most widely used material for today’s microelectronics
Silicon was not the first semiconductor material used, germanium was first.

8. Group 4

9. Silicon
From the periodic chart you can see that silicon is a group 4 element
Group 4 elements have 4 electrons in their outer most electron shell
Germanium is also a group 4 element

10. Why is silicon an excellent microelectronics material?
It is very abundant
It can be grown into a single orientation crystal
It can be made electrically active easily
It can be made to conduct electrons with a small applied potential
It has a naturally forming oxide that acts as an insulating and diffusion barrier

12. Two dimensional schematic of three dimensional crystal

13. Group 3 Elements

14. P type doping – Positive, electron short, also called a hole

15. Group 5 elements

16. N-type doping – N is negative, electron rich

17. Combing n-type silicon and p-type silicon gives a pn junction

18. The future
Silicon will continue to play a dominant role but other semiconductor materials will play an increasing role
III-V semiconductor materials made from group III and group V elements are now common ( GaAs, InP, AlN )
II-VI semiconductor materials are being investigated for special applications
SiC, “diamond like carbon”, and SiGe are also of interest

19. The project Your team is interested in forming a technology company
Your idea is to create miniature antenna that can be used in wireless electronic devices
You will pick an application, design an antenna for the application, fabricate the antenna in the microelectronics clean room, analyze the design, and determine market and economic viability

20. Assignment Consider the options for your project:
Cellular phone antenna (watch size)
Bluetooth and Wi-Fi antenna
RFID antenna
Determine which option you would like to use based on future potential