Semiconductor Materials and Doping Techniques

 

Description: Introduction to semiconductor materials, doping, and basic electrical properties due to doping.

Length of time: 6 hrs.

Prerequisites:

Module: Atomic Theory

Topics:

1. Semiconductors

Germanium

Silicon

Compound materials

Major properties

2. Doping of intrinsic semiconductors

Purpose

P type

N type

Materials

3. Resistivity curves

Effect of doping

4. Conductivity

Electron

Hole

Majority carrier

Carrier mobility

Effects of contamination, heat, fields and light

 

Student objectives:

Student will be able to:

1. Name two elemental semiconductor materials and some compound materials that have semiconductor properties.

2. Describe a completed transistor (IC) and relate the doping processes to the completed device; explain how it works.

3. Contrast and compare some properties of elemental semiconductors and compound semiconducting materials. Address applications.

4. Discuss doping as a method to control the resistivity of semiconductor materials.

5. Use definitions of N and P type doping to compare and contrast majority carriers and dopant materials.

6. Explain what is meant by "hole conduction" and "electron conduction".

7. Explain the axes and scales used on resistivity curves and explain what the curves are used for.

8. Discuss the speed at which carriers move in response to a given amount of energy.