Materials Science and Engineering: An Introduction

Published by Wiley
ISBN 10: 1118324579
ISBN 13: 978-1-11832-457-8

Chapter 18 - Electrical Properties - Questions and Problems - Page 780: 18.27a

Answer

No hole is generated by the electron excitation involving a donor impurity atom because electron excitation is within the band gap, and no missing electron is created within the normally filled valence band.

Work Step by Step

No hole is generated by the electron excitation involving a donor impurity atom because electron excitation is within the band gap, and no missing electron is created within the normally filled valence band.
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