Getting SLME value -3e-11. What's wrong?

[luqmansaleem99]

I consider that this is the SLME method to calculate efficiency of solar cells. This code needs fundamental and direct allowed band gaps along with the absorption coefficient in m^-1 units. I am providing it all the data and this code gives me the standard SLME's value -3e-11. I don't how to interpret this number -3e-11. What exactly is it? I was expecting that I will get some number like 0.20 (for 20% efficiency). But the number is so small, -3e-11.

Can someone please clarify my confusion?

[ldwillia]

Do you get reasonable values running the script to produce the SLME vs thickness plot for (mock) CdTe? If not, your am1.5G.dat file is likely the cause.

If it's not that, could you provide your absorbance, band gaps, and thickness values for debugging?