8.4.2. Doping and Implantation

Try these first

1. 1.

   What is doping in semiconductors?

   Hint

   Think about how we modify silicon.

2. 2.

   Name one n-type dopant.

   Hint

   What element adds electrons?

3. 3.

   What is the effect of doping silicon?

   • It makes it conduct electricity better.
   • It makes it harder.
   • It makes it more flexible.

   Hint

   Think about how we want silicon to operate in electronics.

4. 4.

   True or False: Ion implantation can be used to control the depth of dopants in silicon.

   • True
   • False

   Hint

   Recall the advantages of this technique.

5. 5.

   Design a MEMS sensor that requires specific doping. Explain your choice of dopants and their impact on the sensor's performance.

   Hint

   Consider how electrical signals affect sensor operation.

6. 6.

   Determine the advantages and drawbacks of ion implantation and thermal diffusion for doping silicon. Which would you recommend for a high-precision MEMS application?

   Hint

   Think about the precision required in MEMS applications.