Project
PaA-1
Electronics of Nanotextured Perovskite Devices
Project Heads
Christiane Becker, Patricio Farrell, Sven Burger, Klaus Jäger
Project Members
Dilara Abdel
Project Duration
01.01.2024 − 31.12.2025
Located at
WIAS
Description
Nanotextured perovskite devices have led to tremendous advancements in various fields, including light emitting diodes and solar cells. For example, at Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) perovskite–silicon tandem solar cells (PSTSC) have been investigated as they allow to overcome the power conversion efficiency limit of conventional silicon solar cells. In recent experiments nanotextured tandem devices, showed various advantages:
- smaller reflection losses in comparison to planar tandems;
- improved electronic material quality of solution-processed perovskite layers;
- and an increase in fabrication yield from 50% to 95%.
To a surprising degree the success of nanotextured perovskite–silicon tandem solar cells remains a mystery. It was noted experimentally that the open-circuit voltage for textured cells is higher than for planar cells. While a higher open-circuit voltage is beneficial for device performance, it is not understood theoretically. Understanding the reason is key to further improving the cell design. In contrast to other semiconductor materials such as silicon, in perovskites it is crucial to take ion movement into account.
Hence, the project aims at understanding electronic properties which lead to superior performance of nanotextured perovskite devices such as perovskite–silicon tandem solar cells. We develop real-life 2D/3D charge transport simulations based on drift-diffusion models which include correctly limited ion migration.
Project Webpages
Related Publications
- D. Abdel, P. Vagner, J. Fuhrmann, P. Farrell. Modelling charge transport in perovskite solar cells: Potential-based and limiting ion vacancy depletion. Electrochimica Acta, 390: 138696, 2021. doi: 10.1016/j.electacta.2021.138696.
- D. Abdel, C. Chainais-Hillairet, P. Farrell, M. Herda. Numerical analysis of a finite volume scheme for charge transport in perovskite solar cells. IMA Journal of Numerical Analysis, 2023. doi: 10.1093/imanum/drad034.
- D. Abdel, N. Courtier, P. Farrell. Volume exclusion effects in perovskite charge transport modeling. Optical and Quantum Electronics, 55(884), 2023. doi: 10.1007/s11082-023-05125-9.
- D. Abdel, A Glitzky, M. Liero. Analysis of a drift-diffusion model for perovskite solar cells. Discrete and Continuous Dynamical Systems – B, 2024. doi: 10.3934/dcdsb.2024081
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