Hello everyone,
I am currently simulating a MASnI₃ (Methylammonium Tin Iodide) perovskite solar cell using SCAPS, and I've encountered an issue that I need help resolving.
When I use the default absorption coefficient model provided in SCAPS, I obtain reasonable solar cell efficiency values. However, when I apply a custom absorption coefficient (based on external data extracted from a published paper on MASnI₃), the efficiency of the cell increases to 55%, which exceeds the Shockley-Queisser limit for a single-junction solar cell.
My questions for the community are:
Thank you in advance for any insights or suggestions you can provide!
Md. Harun-Or-Rashid
- Absorption coefficients in SCAPS are typically given in units of cm⁻¹. If the data you are importing is in different units or not properly scaled, this could lead to an unrealistic increase in the number of absorbed photons, and hence, higher photocurrents.
- Gradually increase absorption constant for 2eV to 10 eV and find which value suits best. For solar cells the first absorption peak is important.
- Try to find the proper electron affinity for the absorber it also affects a lot.
- And optimized the defect ( 10^10 to 10^16 ), thickness ( 0.5um to 3um ) and doping (10^12 to 10^19 ) of the absorber properly.
- Check the parameters of ETL and FTO or ITO that they are suitable for your absorber and optimize there parameters ( defect, doping and thickness ) also.
- Optimize the interface defect density properly.
0 votes
0 thanks
- Badges
- Science topic
- Similar topics
- Chemistry
- Nanotechnology
- Nanostructures
- Thin Films
More Sehili Ammar's questions See All
Similar questions and discussions