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P-N Junction

For germanium...

Question

For germanium diode, the junction voltage is about _____.

0.7 V

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0.3 V

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0.6 V

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3 V

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Solution

The correct option is B $0.3 V$
The junction voltage $V_{o}$ for a germanium diode is 0.3 V at room temperature. This potential opposes the diffusion of electrons from n-side and holes from p-side. It is 0.7 eV for Si at room temperature.

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