Diode#Shockley diode equation

Shockley the equation, named after William B. Shockley describes the current-voltage characteristic of a semiconductor diode.

It reads after Wagner:

  • Anode-cathode voltage or voltage flow:
  • Current through the diode:
  • Reverse saturation current (short: reverse current ):
  • Emission coefficient:
  • Temperature Voltage: at room temperature ( with the absolute temperature, Boltzmann's constant and the electron charge )

The equation applies strictly only for positive voltages. The exponential function increases to positive values, which are large compared to, sharply. This is obtained for the Shockley equation a good approximation:

The Shockley equation describes the large-signal behavior, ie the physically measurable quantities of a diode. In the small signal to approximate the equation by a Taylor series expansion.

Swell

  • Electromagnetic Theory
  • Solid State Physics
William Shockley Digital Object Identifier
727713
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