Briefly explain how depletion region is formed in a PN diode when there is no bias applied. When the PN junction is biased negatively, how does the depletion width changes cause the current flow between the regions. You may add relevant diagrams to support your answer.

Glencoe Physics: Principles and Problems, Student Edition
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ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter29: Solid-state Electronics
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Briefly explain how depletion region is formed in a PN diode when there is no bias applied. When the PN junction is biased negatively, how does the depletion width changes cause the current flow between the regions. You may add relevant diagrams to support your answer.

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