EBK CHEMISTRY: ATOMS FIRST
EBK CHEMISTRY: ATOMS FIRST
3rd Edition
ISBN: 8220103675505
Author: Burdge
Publisher: YUZU
Question
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Chapter 24.6, Problem 24.4WE

(a)

Interpretation Introduction

Interpretation:

The given set of combinations should be identified that whether they form good semiconductor.

Concept Introduction:

Semiconductors are substances that conduct electricity either by addition of an impurity or by the effects of temperature on it. Semiconductors have small energy gap between valence and conduction band hence its electrical conductivity lies between conductor and insulator.

Addition of impurity to a semiconductor is termed as doping. Doping alters the conductivity of a semiconductor. The addition of an element having either more or less number of valence electrons than the natural semiconductor decides the combination as the following two types of semiconductor.

  • n- type semiconductor:  (conduction is due to movement of extra electrons)

The element added will have more valence electron than the natural semiconductor. Therefore, the extra electron from the added element resides in conduction band and increase the conductivity.

Example: Silicon (natural semiconductor) and Phosphorus

  • p-type semiconductor: (conduction is due to movement of holes)

The element added will have less valence electron than the natural semiconductor. Here, instead of extra electron, there will be “holes” at the places, where a semiconductor is replaced by added element. A p-type semiconductor increases conductivity because the holes (effective positive charge; lies at valence band) move through the natural semiconductor rather than electrons.

Example: Silicon (natural semiconductor) and Gallium

To Determine: The given combination of elements will form semiconductor or not.

(b)

Interpretation Introduction

Interpretation:

The given set of combinations should be identified that whether they form good semiconductor.

Concept Introduction:

Semiconductors are substances that conduct electricity either by addition of an impurity or by the effects of temperature on it. Semiconductors have small energy gap between valence and conduction band hence its electrical conductivity lies between conductor and insulator.

Addition of impurity to a semiconductor is termed as doping. Doping alters the conductivity of a semiconductor. The addition of an element having either more or less number of valence electrons than the natural semiconductor decides the combination as the following two types of semiconductor.

  • n- type semiconductor:  (conduction is due to movement of extra electrons)

The element added will have more valence electron than the natural semiconductor. Therefore, the extra electron from the added element resides in conduction band and increase the conductivity.

Example: Silicon (natural semiconductor) and Phosphorus

  • p-type semiconductor: (conduction is due to movement of holes)

The element added will have less valence electron than the natural semiconductor. Here, instead of extra electron, there will be “holes” at the places, where a semiconductor is replaced by added element. A p-type semiconductor increases conductivity because the holes (effective positive charge; lies at valence band) move through the natural semiconductor rather than electrons.

Example: Silicon (natural semiconductor) and Gallium

To Determine: The given combination of elements will form semiconductor or not.

(c)

Interpretation Introduction

Interpretation:

The given set of combinations should be identified that whether they form good semiconductor.

Concept Introduction:

Semiconductors are substances that conduct electricity either by addition of an impurity or by the effects of temperature on it. Semiconductors have small energy gap between valence and conduction band hence its electrical conductivity lies between conductor and insulator.

Addition of impurity to a semiconductor is termed as doping. Doping alters the conductivity of a semiconductor. The addition of an element having either more or less number of valence electrons than the natural semiconductor decides the combination as the following two types of semiconductor.

  • n- type semiconductor:  (conduction is due to movement of extra electrons)

The element added will have more valence electron than the natural semiconductor. Therefore, the extra electron from the added element resides in conduction band and increase the conductivity.

Example: Silicon (natural semiconductor) and Phosphorus

  • p-type semiconductor: (conduction is due to movement of holes)

The element added will have less valence electron than the natural semiconductor. Here, instead of extra electron, there will be “holes” at the places, where a semiconductor is replaced by added element. A p-type semiconductor increases conductivity because the holes (effective positive charge; lies at valence band) move through the natural semiconductor rather than electrons.

Example: Silicon (natural semiconductor) and Gallium

To Determine: The given combination of elements will form semiconductor or not.

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Chapter 24 Solutions

EBK CHEMISTRY: ATOMS FIRST

Ch. 24.3 - Would the following molecule make a good liquid...Ch. 24.3 - Prob. 3PPACh. 24.3 - Prob. 3PPBCh. 24.3 - Prob. 3PPCCh. 24.3 - Prob. 24.3.1SRCh. 24.3 - Prob. 24.3.2SRCh. 24.6 - Prob. 24.4WECh. 24.6 - Prob. 4PPACh. 24.6 - Prob. 4PPBCh. 24.6 - Prob. 4PPCCh. 24.6 - Prob. 24.5WECh. 24.6 - Prob. 5PPACh. 24.6 - Prob. 5PPBCh. 24.6 - Prob. 5PPCCh. 24.6 - Prob. 24.6.1SRCh. 24 - Bakelite, the first commercially produced polymer,...Ch. 24 - Prob. 24.2QPCh. 24 - Prob. 24.3QPCh. 24 - Prob. 24.4QPCh. 24 - Prob. 24.5QPCh. 24 - Prob. 24.6QPCh. 24 - Prob. 24.7QPCh. 24 - Describe two natural types of composite materials...Ch. 24 - Prob. 24.9QPCh. 24 - Amorphous silica (SiO2) can be formed in uniform...Ch. 24 - Prob. 24.11QPCh. 24 - Prob. 24.12QPCh. 24 - Prob. 24.13QPCh. 24 - Prob. 24.14QPCh. 24 - Prob. 24.15QPCh. 24 - Prob. 24.16QPCh. 24 - Prob. 24.17QPCh. 24 - Prob. 24.18QPCh. 24 - Prob. 24.19QPCh. 24 - Prob. 24.20QPCh. 24 - Prob. 24.21QPCh. 24 - How does an STM measure the peak and valley...Ch. 24 - Prob. 24.23QPCh. 24 - Prob. 24.24QPCh. 24 - Prob. 24.25QPCh. 24 - Prob. 24.26QPCh. 24 - Prob. 24.27QPCh. 24 - Prob. 24.28QPCh. 24 - Prob. 24.29QPCh. 24 - Prob. 24.30QPCh. 24 - Prob. 24.31QPCh. 24 - Prob. 24.32QPCh. 24 - Prob. 24.33QPCh. 24 - Prob. 24.34QPCh. 24 - Prob. 24.35QPCh. 24 - Prob. 24.36QPCh. 24 - Prob. 24.37QPCh. 24 - Draw representations of block copolymers and graft...Ch. 24 - Prob. 24.39QPCh. 24 - Prob. 24.40QPCh. 24 - Prob. 24.41QPCh. 24 - Prob. 24.42QPCh. 24 - Prob. 24.43QPCh. 24 - Prob. 24.44QPCh. 24 - Prob. 24.45QPCh. 24 - Prob. 24.46QPCh. 24 - Prob. 24.47QPCh. 24 - Prob. 24.48QP
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