Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 29 - Molecules and Solids - Questions: 17

Answer

The phosphorus atoms will be donor atoms. Silicon doped with phosphorus is an n-type semiconductor.

Work Step by Step

Phosphorus has 5 valence electrons. An atom of P forms 4 covalent bonds with the Si atoms around it, and the extra weakly-bound electron is donated where it can be excited into the conduction band. This process forms an n-type semiconductor.
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