Tuesday, March 24, 2009

Diode Semiconductor

9.2 Understanding Diode Semiconductor

Solids: Conductor VS Semiconductor VS Insulator
  1. Conductor: Have free electrons that can drift between their atoms
  2. Semiconductor: Have electrons and holes
  3. Insulator: Don't have free electron
Additional information: Energy bands for solids
The conductivity of semiconductors also can be increased by
  • rising the temperature
  • shining light on it
  • adding impurities to it (doping)

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