Key Points
- To deterimine the number of carriers we integrate the number of electrons (holes) over energy
- Determine a density of states assuming a parabolic dispersion relationship
- Fermions! use fermi function for probability of state being filled
- n = p for intrinsic material
- Ef aprox. = Eg/2
Questions
- What does the Fermi-Dirac (Fermi function)
represent?
- Draw the Fermi function at three temperatures
low, moderate, and high.
- What is the density of states function?
- How do we use the fermi fct to calculate
the number of holes and electrons in a material.
- What is an intrinsic semiconductor?