Chapter 12, Problem 54GQ

(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.

(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.