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3 cards from this section. Quick, good the night before a test.
What are the two primary types of energy bands in solids?
Think about where electrons reside.
Define an insulator in terms of energy bands.
Focus on the size of the energy gap.
Which type of material has overlapping energy bands?
Think about conductivity when selecting.
True or False: In semiconductors, the conduction band is always filled at absolute zero.
Consider the energy states at low temperatures.
Consider a semiconductor with an energy gap of 1.1 eV. At what temperatures can you expect to see a significant number of electrons transitioning into the conduction band?
You can relate thermal energy to temperature using kT.
How might doping affect the energy band structure of a semiconductor and what implications does that have for its conductivity?
Think about the role of donor and acceptor atoms.
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