Where in denotes the natural (base e) logarithmic.
The exponential relationship of the current l to the voltage V holds over many decades of current (a span of as many as many as seven decades-thai is, a factor of 〖10〗^7-can be found)
This is quite a remarkable property of junction diodes, one that is also found in bipolar jiunction transistor and ond that has been exploited in many interesting applications.