14.2.2 - On the basis of energy bands
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Practice Questions
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What are the two primary types of energy bands in solids?
💡 Hint: Think about where electrons reside.
Define an insulator in terms of energy bands.
💡 Hint: Focus on the size of the energy gap.
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Interactive Quizzes
Quick quizzes to reinforce your learning
Which type of material has overlapping energy bands?
💡 Hint: Think about conductivity when selecting.
True or False: In semiconductors, the conduction band is always filled at absolute zero.
💡 Hint: Consider the energy states at low temperatures.
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Challenge Problems
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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?
💡 Hint: 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?
💡 Hint: Think about the role of donor and acceptor atoms.
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