Anti-Reflective Graded-Index Metasurface with Correlated Disorder for Light Management in Planar Solar Cells

Prerak Dhawan; Carsten Rockstuhl; Maria Gaudig; Peter Piechulla; Alexander Sprafke; Ralf Wehrspohn

doi:10.1117/12.3024869

19 June 2024 Anti-Reflective Graded-Index Metasurface with Correlated Disorder for Light Management in Planar Solar Cells

Prerak Dhawan, Carsten Rockstuhl, Maria Gaudig, Peter Piechulla, Alexander Sprafke, Ralf Wehrspohn

Author Affiliations +

Proceedings Volume PC13014, Photonics for Solar Energy Systems X; PC1301408 (2024) https://doi.org/10.1117/12.3024869
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Dielectric metasurfaces with tailored disordered have recently emerged as a highly favored light-trapping approach for solar cells compared to traditional techniques like direct nanostructuring and antireflective (AR) coatings. The research interest is due to their superior light-scattering properties, ideal for thin solar cells. Moreover, they successfully overcome the detrimental impact on electrical performance due to texturing and can be produced on macroscopically large wafers using self-assembly nanofabrication methods. This work investigates a graded-index-based design strategy for such disordered metasurfaces where the disordered arrangement is tailored towards a correlated, hyperuniform disorder. Individual scattering elements are designed by drawing inspiration from transformation optics. We numerically and experimentally demonstrate that our disordered graded-index metasurface can significantly improve the light-trapping and antireflective performance of a solar cell stack, especially when compared to structures that implement only one of the two design strategies.

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Citation Download Citation

Prerak Dhawan, Carsten Rockstuhl, Maria Gaudig, Peter Piechulla, Alexander Sprafke, and Ralf Wehrspohn "Anti-Reflective Graded-Index Metasurface with Correlated Disorder for Light Management in Planar Solar Cells", Proc. SPIE PC13014, Photonics for Solar Energy Systems X, PC1301408 (19 June 2024); https://doi.org/10.1117/12.3024869

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KEYWORDS

Solar cells

Diseases and disorders

Antireflective coatings

Design

Dielectrics

Nanostructures

Photocurrent

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