It originates from idealized diode model I (u) = Is * ( exp( u*q/kT) - 1 )

Here Is is saturation current. Under strong reverse bias when u

Dear Athil Al-Ezzi,

You raised a very interesting question. The shape of reverse JV is crucial for long operating PV. It was found that the PVs with high dark currents under reverse bias have shorter lifetime.

It is a very important matter for reverse JV . The PV has a short lifetime with high dark currents