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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Metal-Semiconductor Junctions

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What is the primary characteristic of an ohmic contact?

a: It has a high resistance. Explanation

Explanation

b: It allows current to flow easily in both directions. Explanation

Explanation

c: It only conducts current in one direction. Explanation

Explanation

d: It has a nonlinear I-V relationship. Explanation

Explanation

What role does doping play in the formation of ohmic contacts?

a: It increases the resistance of the contact. Explanation

Explanation

b: It provides sufficient charge carriers at the interface. Explanation

Explanation

c: It has no effect on the contact properties. Explanation

Explanation

d: It only affects the thermal stability of the junction. Explanation

Explanation

Which metal is commonly used to form ohmic contacts with n-type silicon?

a: Gold Explanation

Explanation

b: Aluminum Explanation

Explanation

c: Copper Explanation

Explanation

d: Silver Explanation

Explanation

What is the effect of temperature on the contact resistance of ohmic contacts?

a: Temperature has no effect on contact resistance. Explanation

Explanation

b: Higher temperatures generally increase contact resistance. Explanation

Explanation

c: Higher temperatures can decrease contact resistance. Explanation

Explanation

d: Contact resistance is only affected by the material used. Explanation

Explanation

What is the significance of the work function in the context of metal-semiconductor junctions?

a: It determines the thermal conductivity of the metal. Explanation

Explanation

b: It affects the barrier height at the junction. Explanation

Explanation

c: It has no relevance to the junction properties. Explanation

Explanation

d: It only influences the mechanical properties of the junction. Explanation

Explanation

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