KAUST tandem
Sets up full tandem optics for a >33% perovskite/silicon tandem using a simplified raytracing + transfer-matrix-method approach on ideal pyramids.
This example sets up comprehensive tandem optics for a perovskite/silicon tandem cell exceeding 33% efficiency (Aydin et al., Nature 623, 2023) by defining the optical properties of the top-cell layers. It uses a simplified raytracing + transfer-matrix-method (TMM) approach, effectively assuming perfectly conformal layers on ideal pyramids (Xu et al., PRX Energy 1, 2022).
Because this neglects wave-optics and additional roughness effects, it yields lower bottom-cell and higher top-cell generation than experiment; the model is nonetheless reliable for predicting general trends when layer thicknesses are varied. The example was created with scientific support from KAUST, and a download (KAUST_tandem.zip) is provided.
What this example covers:
- Defining top-cell layer optics for a perovskite/silicon tandem
- A simplified raytracing + TMM optical approach on ideal pyramids
- Trade-offs between absolute accuracy and trend prediction when varying layer thickness
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