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Molecular engineering of contact interfaces for high-performance perovskite solar cells

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Molecular engineering of contact interfaces for high-performance perovskite solar cells

by Furkan H. Isikgor, Shynggys Zhumagali, Luis V. T. Merino, Michele De Bastiani, Iain McCulloch, Stefaan De Wolf
Rewiew Year: 2022 DOI: https://doi.org/10.1038/s41578-022-00503-3

Bibliography

H. Isikgor, F., Zhumagali, S., V. T. Merino, L., De Bastiani, M., McCulloch, I., De Wolf, S. 

Abstract

Metal-oxide-based charge-transport layers have played a pivotal role in the progress of perovskite solar cells. Yet metal-oxide/perovskite interfaces are often highly defective, owing to both metal-oxide and perovskite surface defects. This results in non-radiative recombination and impedes charge transfer. Moreover, during operation, such interfaces may suffer from undesirable chemical reactions and mechanical delamination issues. Solving this multifaceted challenge requires a holistic approach to concurrently address the interfacial defect, charge-transfer, chemical stability and delamination issues, to bring perovskite solar cell technology closer to commercialization. With this motivation, we review and discuss the issues associated with the metal-oxide/perovskite interface in detail. With this knowledge at hand, we then suggest solutions based on molecular engineering for many, if not all, challenges that encumber the metal-oxide/perovskite interface. Specifically, in light of the semiconducting and ultrafast charge-transfer properties of dyes and the recent success of self-assembled monolayers as charge-selective contacts, we discuss how such molecules can potentially be a promising solution for all metal-oxide/perovskite interface issues.

Keywords

Electronic devices Solar cells Solar energy
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