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CBSE Class 12-science Answered

What do you mean by depletion layer and potential barrier for a p-n junction.
Asked by Topperlearning User | 18 Jun, 2014, 10:42: AM
Expert Answer

Depletion layer is the region created around the p-n junction which is devoid of free charge carriers and has immobile ions.It is created due to diffusion of majority carriers across the junction when p-n junction is formed.

Potential barrier is the potential difference or junction voltage developed across the junction due to migration of majority charge carriers across it when p-n junction is formed. It opposes further migration of majority carriers across the junction due to this junction voltage.

Answered by | 18 Jun, 2014, 12:42: PM
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