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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Identify the following as either p- or n-type semiconductors.

  1. (a) germanium doped with arsenic
  2. (b) silicon doped with phosphorus
  3. (c) germanium doped with indium
  4. (d) germanium doped with antimony

(a)

Interpretation Introduction

Interpretation:

Germanium doped with arsenic has to be identified for p-type or n-type semiconductor.

Concept introduction:

Conductivity of an electrolyte solution is a measurement of the amount of its ability to conduct electricity.

The SI unit of conductivity is siemens per meter (S/m).

P-type semiconductor:

When the trivalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as p-type semiconductor. Boron (B), Gallium (G), Indium (In), Aluminium (Al) etc. are trivalent impurities and which are called acceptor impurity.

N-type semiconductor:

When pentavalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as n-type semiconductor. Phosphorus, arsenic, antimony etc are pentavalent impurities which are called donor impurity.

Explanation

Silicon or germanium is used as the intrinsic semiconductor, silicon and germanium has four valence electrons.

Germanium doped with arsenic is N-type semiconductor, because, When pentavalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as n-type semiconductor...

(b)

Interpretation Introduction

Interpretation:

Silicon doped with phosphorus has to be identified for p-type or n-type semiconductor.

Concept introduction:

Conductivity of an electrolyte solution is a measurement of the amount of its ability to conduct electricity.

The SI unit of conductivity is siemens per meter (S/m).

P-type semiconductor:

When the trivalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as p-type semiconductor. Boron (B), Gallium (G), Indium (In), Aluminium (Al) etc. are trivalent impurities and which are called acceptor impurity.

N-type semiconductor:

When pentavalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as n-type semiconductor. Phosphorus, arsenic, antimony etc are pentavalent impurities which are called donor impurity.

(c)

Interpretation Introduction

Interpretation:

Germanium doped with indium has to be identified for p-type or n-type semiconductor.

Concept introduction:

Conductivity of an electrolyte solution is a measurement of the amount of its ability to conduct electricity.

The SI unit of conductivity is siemens per meter (S/m).

P-type semiconductor:

When the trivalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as p-type semiconductor. Boron (B), Gallium (G), Indium (In), Aluminium (Al) etc. are trivalent impurities and which are called acceptor impurity.

N-type semiconductor:

When pentavalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as n-type semiconductor. Phosphorus, arsenic, antimony etc are pentavalent impurities which are called donor impurity.

(d)

Interpretation Introduction

Interpretation:

Germanium doped with antimony has to be identified for p-type or n-type semiconductor.

Concept introduction:

Conductivity of an electrolyte solution is a measurement of the amount of its ability to conduct electricity.

The SI unit of conductivity is siemens per meter (S/m).

P-type semiconductor:

When the trivalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as p-type semiconductor. Boron (B), Gallium (G), Indium (In), Aluminium (Al) etc. are trivalent impurities and which are called acceptor impurity.

N-type semiconductor:

When pentavalent impurity is added to an intrinsic or pure semiconductor (silicon or germanium) is called as n-type semiconductor. Phosphorus, arsenic, antimony etc are pentavalent impurities which are called donor impurity.

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