The barrier potential of a p-n junction depends on:
(a) type of semi conductor material
(b) amount of doping
(c) temperature
Which one of the following is correct?

(a) and (b) only

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(b) only

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(b) and (c) only

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(a), (b) and (c)

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Solution

The correct option is D (a), (b) and (c)
The barrier potential depends on type of semiconductor (for Si, $V_{b} = 0.7 V$ and for Ge, $V_{b} = 0.3 V$ ), amount of doping and also on the temperature.

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