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Updated: Feb 5, 2026
09:19
In Situ Monitoring of the Accelerated Performance Degradation of Solar Cells and Modules: A Case Study for CuIn,GaSe2 Solar Cells
Published on: October 3, 2018
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Optical modeling of structured silicon-based tandem solar cells and module stacks
Optics Express
|September 7, 2018
Summary
This study enhances the OPTOS optical modeling tool to calculate layer-resolved absorptance in silicon tandem solar cells. The improved model accurately predicts performance and analyzes losses in encapsulated solar cell modules.
Area of Science:
- Materials Science
- Renewable Energy
- Optical Engineering
Background:
- Silicon-based tandem solar cells require precise optical modeling for efficiency optimization.
- Complex surface structures in these devices necessitate advanced simulation tools.
Purpose of the Study:
- To extend the OPTOS formalism for calculating layer-resolved absorptance in silicon tandem solar cells and module stacks.
- To validate the enhanced OPTOS model against experimental data and perform detailed loss analysis.
Main Methods:
- Mathematical formulation of the extended OPTOS formalism for absorptance calculation.
- Comparison of OPTOS simulation results with external quantum efficiency (EQE) measurements.
- Loss analysis of perovskite-silicon solar cells with and without module encapsulation.
Main Results:
- The enhanced OPTOS model shows good agreement with EQE measurements for a record-efficiency III-V on silicon tandem solar cell.
- Simulations reveal lower photocurrent density in encapsulated perovskite-silicon solar cell modules due to increased reflectance and absorption by EVA encapsulant.
Conclusions:
- The extended OPTOS formalism is a powerful tool for simulating absorptance in complex silicon tandem solar cell and module structures.
- Module encapsulation can lead to optical losses, highlighting the need for careful material selection and design in tandem solar module development.
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