Chapter 21, Problem 21.5P

Interpretation Introduction

Interpretation:

Determine if germanium doped with arsenic forms an n-type of p-type semiconductor based on the elements involved and explain the increase in conductivity in the doped semiconductor.

Concept introduction:

• Doping is the process of increasing the conductivity of a semiconductor by adding small amounts of certain impurities.
• An n-type semiconductor is a semiconductor that is doped with an element with extra electrons which uses the electrons as charge carriers, which are negatively charged.
• A p-type semiconductor is a semiconductor that is doped with an element with less valence electrons, which results in charge carriers that are positive holes.

To classify:The type of semiconductor and why a doped semiconductor has greater conductivity.