In the previous two units we have covered semiconductor bandstructures, the effective mass, and the concepts of electrons and holes in the conduction and valence bands. We also described various practical methods by which the band-gap of a semiconductor can be measured, including an electrical technique that involves measuring the conductivity as a function of temperature. In this unit we will examine the properties that make semiconductors unique: the ability to control the number of electrons and holes by the addition of impurity elements called dopants.
After studying this unit you will be able to:
1. Describe how donors and acceptors control the number of electrons and holes in semiconductors.
2. Describe the number of states, which electrons (or holes) can fill in the conduction (or valence) band of a semiconductor – the Density of States.
3. Describe the statistics that govern how electrons and holes fill states in the conduction and valence bands.
4. Calculate the number of electrons (or holes) in a doped (or undoped) semiconductor at a given temperature.
The description above is only a little about the material that is on file with the admin pdf formatprovided on the download link below. discussion of semi-differential is an administrator in thesemester lecture material 5 with faculty lecturer Dr Surya Jaya. Admin accidentally uploaded the material - the material here with the hope will be useful to the student of knowledge who mightrequire differential material this spring. so, if you want to have it can be downloaded here, dalam file ini ada 27 halaman dengan kapasitas 551 Kb. Selamat belajar. Jangan lupa berkomentar ya.