SCALABLE BULK AND SURFACE MODIFICATION FOR EFFICIENT AND STABLE INVERTED PEROVSKITE SOLAR CELLS

Merve Derya Tutundzic^a^,^b^,^c, Aranzazu Aguirre^a^,^b^,^c, Tamara Merckx^a^,^b^,^c, Anurag Krishna^a^,^b^,^c, Tom Aernouts^a^,^b^,^c, Yinghuan Kuang^a^,^b^,^c, Bart Vermang^a^,^b^,^c

^aimo-imomec, imec, Thor Park 8320, Genk, 3600, Belgium.

^bEnergyVille 2, Thor Park 8320, 3600 Genk, Belgium

^cHasselt University, Martelarenlaan 42, 3500 Hasselt, Belgium

Proceedings of MATSUS Fall 2024 Conference (MATSUSFall24)

#PeroMAT- Halide perovskite and perovskite- inspired materials: synthesis and applications

Lausanne, Switzerland, 2024 November 12th - 15th

Organizers: Raquel Galian, Lakshminarayana Polavarapu and Paola Vivo

Poster, Merve Derya Tutundzic, 403
Publication date: 28th August 2024

Perovskite solar cells (PSCs) have shown remarkable potential in the field of photovoltaics. Recently, inverted PSCs have reached the certified power conversion efficiency (PCE) of 26.5% and surpassed the record conventional structure^[1]. Inverted architecture is appealing for upscaling due to its simpler design, lower material costs, and potentially higher stability. However, these photovoltaic cells often exhibit nonradiative recombination losses, particularly at the perovskite/C60 interface^[2]. In addition, challenges related to scalability and long-term stability hinder their commercial viability. Therefore, it is crucial to develop up-scalable manufacturing processes for the entire stack of PSCs. In this regard, it is essential to employ uniform and scalable deposition techniques for passivation interlayers compatible with the scalable manufacturing of perovskite and charge transport layers.

In this work, we aim to develop fully scalable inverted perovskite solar cells by applying interfacial and bulk engineering to achieve high performance and transfer these strategies to perovskite modules. We study the co-deposition of self-assembled monolayers (SAMs) and perovskite and apply passivation strategies at the perovskite/C60 interface to reduce surface recombination velocities.

Advanced characterization techniques, such as time-resolved photoluminescence, scanning electron microscopy, and x-ray diffraction, are used to examine perovskite film properties, while XPS/UPS measurements are performed to analyse the interface properties. Thermal and light soaking stability tests will be discussed at the cell level.

The results from this study will provide insights for designing scalable strategies for perovskite solar cells that combine high efficiency with robust stability. This will be achieved by employing holistic bulk and interface engineering, paving the way for the practical deployment of large-scale perovskite modules.

References:

[1] Huang, X., Liu, Y., Chen, Y., Zhao, Z., Zhang, J., Zhang, X., ... & Huang, F. (2024). A general strategy for the synthesis of efficient and stable inverted perovskite solar cells. Nature, 617, 451-458.

[2] Zhao, Y., Chen, Y., Zhai, J., Zhang, J., & Huang, F. (2021). High-efficiency inverted perovskite solar cells with efficient electron transport layers. Advanced Energy Materials, 12(31), 2103567.

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