V-I characteristics of p-n junction diode (~:http://gopalec201.blogspot.in/:~)
If we apply forward bias to the PN-junction diode, that means negative terminal is connected to the P-type material and the positive terminal is connected to the N-type material across the diode which has the effect of decreasing the width of the PN junction diode.
If we apply reverse bias to the PN-junction diode, that means positive terminal is connected to the P-type material and the negative terminal is connected to the N-type material across the diode which has the effect of increasing the width of the PN junction diode and no charge can flow across the junction
VI Characteristics of PN Junction Diode
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