Regensburg 2025 – wissenschaftliches Programm
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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur
KFM 16: Perovskite and Photovoltaics II (joint session HL/KFM)
KFM 16.3: Vortrag
Donnerstag, 20. März 2025, 10:00–10:15, H13
Hyperuniform discordered structures for Light Management in Ultrathin CIGSe Solar Cells — •Katharina Trockel1, Merve Demir1, Frank Syrowatka2, Ralf Wehrspohn1, Roland Scheer1, and Alexander Sprafke1,2 — 1Martin Luther University Halle-Wittenberg, Institute of Physics, 06120 Halle, Germany — 2Martin Luther University Halle-Wittenberg, Interdisciplinary Center of Materials Science, 06120 Halle, Germany
Ultrathinfilm Cu(In,Ga)Se2 (CIGSe) solar cells are highly attractive due to their reduced material consumption and low manufacturing costs. While conventional CIGSe solar cells can achieve efficiencies of up to 21 %, increasing the efficiency of ultrathin solar cells remains a key research objective to enhance their competitiveness. A promising approach involves extending the optical path length in the absorber layer by integrating textured structures at the back or front contact of the solar cell. Most studies focus on periodic textures.
In this work, we investigate hyperuniform disordered (HuD) structures for light management in ultrathin CIGSe solar cells. The HuD structures are fabricated using polymethyl methacrylate (PMMA) particles deposited onto the back contact of the solar cells. These particles are covered with an indium tin oxide (ITO) layer and subsequently removed via a calcination process. The resulting ITO layer functions as a textured back contact, improving both light scattering and electrical performance.
First experimental results on the implementation of CIGSe solar cells with integrated HuD structures will be presented.
Keywords: Ultrathin CIGSe solar cells; Hyperuniform disordered structures; Light management