3. Answer the following questions about silicon structure and properties. (20) (1) Draw the atomic structure of silicon

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3 Answer The Following Questions About Silicon Structure And Properties 20 1 Draw The Atomic Structure Of Silicon 1 (57.2 KiB) Viewed 13 times

3. Answer the following questions about silicon structure and properties. (20) (1) Draw the atomic structure of silicon and calculate its atomic packing factor (show you work). (4) (2) What is doping and why is it necessary? Define n-type and p-type silicon. Also, what is CMOS? (3) (3) Why does silicon wafers have anisotropic properties? (2) (4) Plot stress-strain curves of silicon and steel in the same graph below and explain the differences. (4) € (5) True or False: (4) "Silicon is a better thermal conductor than iron." ( ) "Silicon shows less thermal expansion than SiO2." ( ) (6) The first transistor was made of polycrystalline germanium in 1947. Electron mobility in germanium is higher than in silicon, and germanium was readily available. Why then did silicon become primary semiconductor material in microelectronics industry? (3)