Potential barrier of Silicon Diode

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SUMMARY

The potential barrier of a silicon diode is typically 0.7V at normal temperature. When the temperature rises to 120 degrees Celsius, the potential barrier decreases due to increased carrier activity and thermal energy. This behavior is governed by the Diode Equation, which relates voltage, current, and temperature at the junction. Understanding this relationship is crucial for accurately predicting diode performance under varying thermal conditions.

PREREQUISITES
  • Understanding of semiconductor physics
  • Familiarity with the Diode Equation
  • Knowledge of temperature effects on electronic components
  • Basic principles of current-voltage characteristics in diodes
NEXT STEPS
  • Study the Diode Equation and its derivation
  • Research the effects of temperature on semiconductor devices
  • Explore the concept of thermal runaway in diodes
  • Learn about different types of diodes and their characteristics under varying conditions
USEFUL FOR

Electrical engineers, electronics students, and anyone involved in semiconductor device design and analysis will benefit from this discussion.

otomanb
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As we know the potential barrier of silicon diode is 0.7V at "Normal Temperature"
But if the Temperature is 120 degree Centigrade then what will happen?


1) the Potential Barrier will increase
2) Decrease
3) Remain Same

Please Explain also!
 
Last edited:
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otomanb said:
As we know the potential barrier of silicon diode is 0.7V at "Normal Temperature"
But if the Temperature is 120 degree Centigrade then what will happen?


1) the Potential Barrier will increase
2) Decrease
3) Remain Same

Please Explain also!

The relevant equation is the "Diode Equation", relating the voltage, current and temperature of the junction. Can you write out that equation for us, and tell us the answer to your question?

If you don't see the Diode Equation in your textbook, you can find it at wikipedia.org, or with a Google search.
 
sorry !:confused:
I don't have any equation. I found this question in ECAT(Engineering College Admition Test Book).
And it was just a MCQs
 

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