I'm getting 28-30 mA Jsc along with 1030-1060 meV Voc and 60-72% FF for FTO/cTiO2/mTiO2/tripple cation/Spiro/Au device.
Is there any maximum theoretical value for Jsc?
Arindam,
To get the maximum photocurrent you need to integrate the spectral irradiance of AM1.5 from the cut off wavelength of the absorber to zero after dividing every value by hc and multiplying it with lambda and the electron charge q.
That is
Iph< = (q/hc) Integral I(lambda) d lambda from zero to lambda critical, the cut off wave length
For more rigorous answer one has to take the light reflection into consideration by
multiplying the right hand side by (1- roh) where roh is the reflectance.
It is also assumed that all the incident photons after reflection will be absorbed and photo generated electron hole pairs will be collected.
For more information please refer to the paper in the link: Conference Paper Generic Analytical Models for Organic and Perovskite Solar Cells
Best wishes
Express your illuminator irradiation density in photons per nanometer then convolve that with your absorption spectrum of your cell expressed in similar units. Counting 1 photon -> 1 electron this will give you the theoretical maximum J . Don't worry if it appears very large. There are many inefficiencies in solar cells which will reduce it.
Tony Maine Thank you for your kind suggestions. (I was using 1 sun illumination)
Arindam,
To get the maximum photocurrent you need to integrate the spectral irradiance of AM1.5 from the cut off wavelength of the absorber to zero after dividing every value by hc and multiplying it with lambda and the electron charge q.
That is
Iph< = (q/hc) Integral I(lambda) d lambda from zero to lambda critical, the cut off wave length
For more rigorous answer one has to take the light reflection into consideration by
multiplying the right hand side by (1- roh) where roh is the reflectance.
It is also assumed that all the incident photons after reflection will be absorbed and photo generated electron hole pairs will be collected.
For more information please refer to the paper in the link: Conference Paper Generic Analytical Models for Organic and Perovskite Solar Cells
Best wishes
Abdelhalim Zekry Thank you for your detailed reply. I really appreciate it.
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