Скачать или смотреть Q&A on Semiconductors

In this Global TechBoom tutorial, about semiconductor questions & answers:

Timestamps
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0:14 Distinguish semiconductors, insulators, and conductors based on bandgap?
0:48 Explain the valence electrons and valence band?
1:23 Define forbidden gap?
1:41 What is meant by Fermi level in semiconductors? Explain where does the Fermi level lies in an intrinsic semiconductor and an extrinsic semiconductor?
2:27 Describe a hole and hole current in a semiconductor?
3:00 Differentiate between intrinsic and extrinsic semiconductors?
3:25 Describe the term doping and why it is needed?
3:54 Distinguish between P-type and N-type semiconductors?
4:19 What is meant by donor and acceptor impurities?
5:01 Why Silicon and germanium are the mainly used semiconductor materials?