You can calculate the shortcircuit current density Jsc by using the formula:

Jsc= Integral over lambda of (EQE(λ)*AM1.5G(λ)*q*λ/h*c)dλ ,

where:

AM1.5G(λ) is the spectrum of the AM1.5 radiation,

λ is the wavelength

h is the Planck consatnt.

Best wishes

You need to multiply EQE and photon flux spectra. The resultant spectrum should be integrated over photon energies. The integral should also be multiplied by the elementary charge in order to get the short circuit current density. The calculated short circuit current density may be larger than the measured one due to the effect of series resistance, but for high-quality devices, the discrepancy should be negligible.

You can calculate the shortcircuit current density Jsc by using the formula:

Jsc= Integral over lambda of (EQE(λ)*AM1.5G(λ)*q*λ/h*c)dλ ,

where:

AM1.5G(λ) is the spectrum of the AM1.5 radiation,

λ is the wavelength

h is the Planck consatnt.

Best wishes

In this equation,

Integral over lambda of (q/hc) λ ΦAM1.5(λ) A(λ)

where, A(λ) is the absorption of this absorber

we can use A(λ) instead of EQE(λ) with this reference ( Article Broadband perfect metamaterial absorber based on the gallium...