A2) i) What is the cause of the junction capacitance and diffusion capacitance of a pn...

A2)

i) What is the cause of the junction capacitance and diffusion capacitance of a pn junction? Under what condition the junction and diffusion capacitance of the pn junction will exist?

ii) Is the junction capacitance of a pn junction linear? How about the diffusion capacitance?

Expert Solution

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Manojponduru answered 4 months ago

A Si pn diode has an equilibrium diffusion barrier of 0.7 V and an area capacitance...

A Si pn diode has an equilibrium diffusion barrier of 0.7 V and an area capacitance of C2D = 4 nF/cm2 for a reverse bias voltage of -4.3 V. What can you tell about the doping levels?

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Question 5: pn junction (a) Explain the main physical principles underlying the operation of a pn-junction-based diode. (b) Provide a rigorous derivation of the net current through the pn-junction for both the forward and reverse bias. Explain and justify every step in your derivation. (c) For a fixed temperature, plot the net current as a function of applied voltage.

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A3) i) To double the width of a reverse-biased pn junction, should the external voltage be...

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PN Junctions and breakdown 1. Draw and interpret energy band diagram for pn junction in equilibrium,...

PN Junctions and breakdown 1. Draw and interpret energy band diagram for pn junction in equilibrium, forward, and reverse bias 2. Describe what physically happens (And why) when you put n-Si in contact with p-Si (e.g., junction formation) 3. Calculate Vo, W, Wn, Wp 4. Describe how/why current flows in forward and reverse bias. 5. Utilize law of junction to calculate the minority carrier concentration just outside the depletion layer 6. Quantify the forward and reverse bias current in a...

PN Junctions and breakdown 1. Draw and interpret energy band diagram for pn junction in equilibrium,...

PN Junctions and breakdown 1. Draw and interpret energy band diagram for pn junction in equilibrium, forward, and reverse bias 2. Describe what physically happens (And why) when you put n-Si in contact with p-Si (e.g., junction formation) 3. Calculate Vo, W, Wn, Wp 4. Describe how/why current flows in forward and reverse bias. 5. Utilize law of junction to calculate the minority carrier concentration just outside the depletion layer 6. Quantify the forward and reverse bias current in a...

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A2) i) What is the cause of the junction capacitance and diffusion capacitance of a pn...

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