10.1.2. Movement of Electrons

Try these first

1. 1.

   What does applying voltage do to electrons in a semiconductor?

   Hint

   Think about how voltage creates a driving force.

2. 2.

   What are V_GS and V_DS?

   Hint

   One is for the gate, and the other is for the drain.

3. 3.

   What creates the horizontal field aiding the flow of electrons?

   • V_GS
   • V_DS
   • Electric current

   Hint

   Imagine the source and drain and think about their roles.

4. 4.

   True or False: The length of a device does not affect current flow.

   • True
   • False

   Hint

   Consider how distance impacts travel time.

5. 5.

   Design a simple semiconductor device with specific voltage applications (V_GS and V_DS). Calculate how varying the length (L) and oxide thickness (t_ox) could impact the current flow (I_DS) with given mobility factors.

   Hint

   Refer to relationships and formulas you have learned about current in semiconductors.

6. 6.

   Evaluate the effect of increasing device width (W) while keeping length (L) and voltage parameters fixed on the current flow. Discuss the implications for circuit design.

   Hint

   Think about how multiple pathways improve transportation.