Here, I have attached the file data of EQE for DSSC. I need to calculate the Jsc from EQE measurements. can anyone help me to calculate the Jsc from EQE, and please give me an explanation how to calculate the Jsc.
The shortcircuit current is related to the EQE by the relation:
Jsc= q Integral EQE spd . dlambda from lambda cut off to infinity.
So, you need to know the spectral power density spd say for AM1 spectrum represented in photons/wavelength/cm^2. So AM1 must be converted into photons/wavelength /cm^2.
Then you make the integration over all possible wavelengths from the cut off wavelength to the maximum possible wavelength. The AM1 spectrum is published in the literature.
The short-circuit current density (JSC) at a specific wavelength is calculated as follows: JSC(λ) = EQE× (spectral irradiance of AM1.5 G spectrum at 1-sun solar intensity) ×λ∕1.24. The total JSC is obtained by integrating JSC(λ) over the wavelength range of 280–1000 nm . If you have the external quantum efficiency (EQE) of your solar cell then you can calculate the Jsc by integrating the (EQE(λ)*AM1. 5G(λ)*q*λ/h*c)dλ. Your IV can be obtained: I=Io*(exp(q*V/n*k*T)-1)-Isc (by setting I=0 you can also calculate the Voc=(n*k*T/q)*ln((Isc/Io)+1)) . Bests.
For Jsc calculation from EQE you can use this link
https://jscfromeqe.streamlit.app/
New apps are added in the sidebar. Voltage loss waterfall chart is now available in Jsc from EQE webapp. Do check out IV-Parameter app in the sidebar for calculating IV Parameters (Jsc, Voc, FF, Rs, Rsh, and PCE).