CBSE Class 12-science Answered
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.
p-n Diode - Part 1This video explains the basics of a pn junction.
p-n Diode - Part 2 ...This video explains the working of a pn junction diode in forward and rever...
PN DiodeStudy p-n junction, semiconductor diode, diode in forward and reverse bias...