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Semiconductor Electronics: Materials, Diodes and Simple Circuits
Physics · Chapter 21 · Unit 9: Electronic Devices
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Your path through this chapter
Visual lesson Beta
- Part 1: Bands, doping and the p-n junction diode19 slides
- Part 2: Rectifiers, special diodes and the Zener regulator20 slides
Flashcards Beta
30 cards for quick recall of key terms and facts.
Review the cards Step 3: Not startedPractice
99 board-style questions with instant checks: Multiple choice 26, Numerical 26, Short answer 21, Assertion and reason 7.
Practise Step 4: Not startedChapter test Free
Short and long chapter tests in board pattern, with results and analysis.
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Topics 6
- Energy bands in solids; band diagrams of conductors, insulators and semiconductors; band gaps of carbon, Ge and Si
- Intrinsic and extrinsic semiconductors; electrons and holes; doping; n-type and p-type; donor and acceptor impurities
- p-n junction diode: depletion region, potential barrier, forward and reverse bias, V-I characteristics
- Diode as a rectifier: half-wave and full-wave (two-diode) rectifiers
- Special diodes: LED, photodiode and solar cell; energy-saving importance of LEDs
- Zener diode: V-I characteristics; use as a voltage regulator