Question Description
EEGR215 HW 2: Review of Basic Semiconductors and Analysis Techniques
- I-V curves analysis practice for LED-demonstrated and follow along
- Problems for working on in-class & HW
Plot as semilog scale.
Send me a sample data from last week.
- 1.Draw a bond-diagram to show how Arsenic dopes Silicon n-type. Write a couple of sentences to explain this.
- 2. Explain why the carrier mobility decreases with temperature in Silicon.
- 3. What does a bandgap represent? Will the turn-on voltage of a diode increase or decrease as the bandgap increases?
- 4. What is the capacitance of 10nm thick SiO2 (k=3.7) with 2 metal plates on either side of it with area 1cm2? Sketch the structure first.
- 5. If I have silicon with hole concentration 2×1016cm-3 at room temperature. Draw a band diagram with the conduction band energy (Ec), valence band energy (Ev), and Fermi Level (Ef). Look up the effective density of states in the conduction and valence bands (Nc and Nv) at room temperature.
- 6. Explain what the extrinsic region of doping in a semiconductor is. What happens below this temperature? What happens above this temperature?
- 7. What are the major regions in the I-V curves for a diode?
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