Posted by **Anon** on Wednesday, October 16, 2013 at 2:20pm.

The current density of an ideal p-n junction under illumination can be described by:

J(V)=Jph−J0(eqVkT−1)

where Jph is the photo-current density, J0 the saturation-current density, q the elementary charge, V the voltage, k the Boltzmann's constant, and T the temperature.

A crystalline silicon solar cell generates a photo-current density of Jph=40mA/cm2 at T=300K. The saturation-current density is J0=1.95∗10−10mA/cm2.

Assuming that the solar cell behaves as an ideal p-n junction, calculate the open-circuit voltage Voc (in V).

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