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Intrinsic Semiconductors Quiz

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Questions and Answers

What is an intrinsic semiconductor also known as?

Extrinsic semiconductor

Undoped semiconductor (correct)

Doped semiconductor

Impure semiconductor

How are the number of charge carriers determined in an intrinsic semiconductor?

By the type of dopants used

By the crystallographic defects

By the properties of the material itself (correct)

By the amount of impurities present

What is the relationship between the number of excited electrons and the number of holes in an intrinsic semiconductor?

n = 0

n > p

n < p

n = p (correct)

When can a doped semiconductor still be intrinsic?

When doped with both donors and acceptors equally Signup and view all the answers

What can affect the electrical conductivity of chemically pure semiconductors?

Crystallographic defects of technological origin Signup and view all the answers

What is the function of a p–n junction in a semiconductor device?

Allow electric current to pass through the junction only in one direction Signup and view all the answers

How are p-type and n-type regions created in a semiconductor?

By doping the semiconductor with different types of dopants Signup and view all the answers

What are p-type and n-type semiconductors named after?

The excess of holes and excess of electrons, respectively Signup and view all the answers

What electronic devices are p–n junctions fundamental to?

Diodes, transistors, solar cells, LEDs, and integrated circuits Signup and view all the answers

How is the junction of a p–n junction different from a metal–semiconductor junction?

The p–n junction allows current flow in one direction, while the metal–semiconductor junction allows current flow in both directions Signup and view all the answers