Q.14.10 In a p-n junction diode, the current I can be expressed as
where I0 is called the reverse saturation current, is the voltage across the diode and is positive for forward bias and negative for reverse bias, and is the current through the diode, is the Boltzmann constant and is the absolute temperature. If for a given diode and then
(b) What will be the increase in the current if the voltage across the diode is increased to
As we have
Here, , and , = Boltzmann constant =
When the forward voltage is 0.7V:
When the forward voltage is 0.6V:
Hence the increase in the forward current is