Consider an idealised pn step junction and state whether the following are true or false, briefly discuss your reasoning. (a) The space charge region about the junction plane is due to a pile up of electrons on the p-side and holes on the n-side. (b) The built-in potential is typically less than the band gap energy converted to electron volts. (c) Invoking the depletion zone approximation makes the charge density inside the depletion zone directly proportional to the net doping concentration.

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Consider an idealised pn step junction and state whether the following
are true or false, briefly discuss your reasoning.
(a) The space charge region about the junction plane is due to a pile up of electrons
on the p-side and holes on the n-side.
(b) The built-in potential is typically less than the band gap energy converted to
electron volts.
(c) Invoking the depletion zone approximation makes the charge density inside
the depletion zone directly proportional to the net doping concentration.
Transcribed Image Text:Consider an idealised pn step junction and state whether the following are true or false, briefly discuss your reasoning. (a) The space charge region about the junction plane is due to a pile up of electrons on the p-side and holes on the n-side. (b) The built-in potential is typically less than the band gap energy converted to electron volts. (c) Invoking the depletion zone approximation makes the charge density inside the depletion zone directly proportional to the net doping concentration.
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