Covers the HSC physics syllabus dot point: "identify absences of electrons in a nearly full band as holes, and recognise that both electrons and holes help to carry current"

Length: 6 minutes

5. Silicon and Germanium in semiconducters (HSC Physics)

Length: 13 minutes

6. N and P type semiconducters (HSC Physics)

Length: 8 minutes

7. Conduction in P and N type semiconducters (HSC Physics)