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

Furkan H. Isikgor*, Shynggys Zhumagali, Luis V. Luis, Michele De Bastiani, Iain McCulloch, Stefaan De Wolf*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

92 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)89-108
Number of pages20
JournalNature Reviews Materials
Issue number2
StatePublished - Feb 2023

Bibliographical note

Funding Information:
This work was supported by the King Abdullah University of Science and Technology (KAUST) under award numbers OSR-2021-4833, OSR-CARF/CCF-3079, IED OSR-2019-4580, IED OSR-2019-4208, OSR-CRG2020-4350 and CRG2019-4093.

Publisher Copyright:
© 2022, Springer Nature Limited.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Energy (miscellaneous)
  • Surfaces, Coatings and Films
  • Materials Chemistry


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