P–N Junction Quiz
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Questions and Answers

What is a p–n junction?

A p–n junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor.

What does the 'p' side of a p–n junction contain an excess of?

The 'p' side contains an excess of holes.

What allows electric current to pass through the p–n junction only in one direction?

The excess of holes on the 'p' side and the excess of electrons on the 'n' side.

How are the p- and n-type regions creating the p–n junction made?

<p>They are made by doping the semiconductor, for example by ion implantation, diffusion of dopants, or by epitaxy.</p> Signup and view all the answers

What are p–n junctions the elementary 'building blocks' of?

<p>Semiconductor electronic devices such as diodes, transistors, solar cells, light-emitting diodes (LEDs), and integrated circuits.</p> Signup and view all the answers

What are some electronic devices that contain p–n junctions as active sites?

<p>Diodes, transistors, solar cells, light-emitting diodes (LEDs), and integrated circuits.</p> Signup and view all the answers

How are p–n junctions made in semiconductor materials?

<p>By doping the semiconductor, for example by ion implantation, diffusion of dopants, or by epitaxy.</p> Signup and view all the answers

What type of charge does the 'p' side of a p–n junction contain an excess of?

<p>The 'p' side contains an excess of holes.</p> Signup and view all the answers

What type of charge does the 'n' side of a p–n junction contain an excess of?

<p>The 'n' side contains an excess of electrons.</p> Signup and view all the answers

What property of p–n junctions allows electric current to pass through the junction only in one direction?

<p>The property of rectification.</p> Signup and view all the answers

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