Solar cell open circuit voltage and bandgap

[fisico30]

Hello Forum,

if we take a silicon solar cell, the open circuit voltage is about 0.5V.

the current increases as the solar cell area and illumination increases.

But the 0.5 V output voltage does not change as the area and illumination level vary...Why?

It must have something to do with the bandgap...

Thanks,
fisico30

 

[yasir.ustb]

The open circuit voltage is characteristics of solar cell (specically for P-n junction solar cell) which depend only on the material parameters.