Chapter 21, Problem 21.22QP

Interpretation Introduction

Interpretation:

Silicon would form n-type semiconductors or p-type semiconductors with the given elements have to be explained.

Concept introduction:

n-type semiconductors in silicon: Solid semiconducting material having donor impurities are said to be n-type semiconductors, where “n” indicates negative which means the charge of the extra electron.

p-type semiconductors in silicon: Semiconducting material having acceptor impurities are said to be p-type semiconductors, where, ”p” indicates positive.

• Silicon atom has totally 14 electrons among them 4 electors are considered as valence electrons and these 4 valence electrons plays main role when an impurity added to it.
• The formation of n-type or p-type semiconductors is depending upon using impurities either pentavalent or trivalent.