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When depletion layer is formed,n-type part near the junction acquires positive charge,while p-side acquires negative charge.But,electrons,being majority carriers at n-side would then move to this positively charged region,thus neutralising this charge and holes at the p-side would move to the negatively charged end of the p-type part,thus spreading the acquired charge uniformly.Then there would be no depletion layer as such .But,why doesn't this happen?


When depletion layer is formed,n-type part near the junction acquires positive charge,while p-side acquires negative charge.But,electrons,being majority carriers at n-side would then move to this positively charged region,thus neutralising this charge and holes at the p-side would move to the negatively charged end of the p-type part,thus spreading the acquired charge uniformly.Then there would be no depletion layer as such .But,why doesn't this happen?


Grade:9

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