hollyb

What is a barrier voltage? What causes it?

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faylin

A voltage that develops across the junction due to uncovered immobile ions on both sides of the junction. Ions are uncovered due to the diffusion of carriers across the junction.

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anandamayi

"The barrier voltage is the amount of electromotive force required to start current through the P-N junction. Barrier voltages for silicon typically range from 0.5 - 0.7 volts. Barrier voltages for germanium typically range from 0.2 - 0.3 volts. "

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