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Related Experiment Video

Updated: May 29, 2026

Flash Infrared Annealing for Perovskite Solar Cell Processing
05:15

Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

Defect Passivation on SnO2/Perovskite Interface Using Oxalate-Based Passivators for Efficient and Stable Perovskite

Rana Shahid Mahmood1, Weicun Chu1, Riming Nie1,2

  • 1College of Aerospace Engineering, State Key Laboratory of Mechanics and Control for Aerospace Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing, China.

Small Methods
|May 28, 2026
PubMed
Summary

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Dual-Site-Binding Ligand-Driven (100) Orientation for Efficient and Stable Perovskite Solar Cells.

Advanced materials (Deerfield Beach, Fla.)·2026
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Synergistic Dual-Passivation of Grain Boundaries and Buried Interface for High-Efficiency and Stable Perovskite Solar Cells.

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Enhanced stability and efficiency in perovskite solar cells via mixed-metal chalcohalide-alloyed formamidinium lead iodide.

Nature communications·2025

Lithium salts, lithium difluoro(oxalato)borate (LiDFOB) and lithium bis(oxalato)borate (LiBOB), improve tin oxide/perovskite interfaces in perovskite solar cells. This enhances efficiency and stability by reducing defects and improving film quality.

Area of Science:

  • Materials Science
  • Renewable Energy

Background:

  • Tin oxide (SnO2) is a key electron transport layer (ETL) in perovskite solar cells (PSCs).
  • Interfacial defects at the SnO2/perovskite interface limit PSC efficiency and stability.

Purpose of the Study:

  • To introduce LiDFOB and LiBOB as interfacial modifiers for SnO2/perovskite solar cells.
  • To improve perovskite crystallization and reduce interfacial defects.

Main Methods:

  • Introduction of LiDFOB and LiBOB as interfacial modifiers.
  • Spectroscopic analysis to confirm interfacial interactions and defect passivation.
  • Fabrication and testing of perovskite solar cells.

Main Results:

  • Larger perovskite grain sizes and reduced grain boundaries were achieved.
Keywords:
LiDFOB and LiBOB ModifiersSnO2/perovskite Interfacedefect passivationinterface modificationperovskite solar cells

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Last Updated: May 29, 2026

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  • Effective defect passivation led to reduced trap density and suppressed metallic Pb formation.
  • Optimized devices showed a champion power conversion efficiency of 25.12% and excellent operational stability.

    • Conclusions:

    • LiDFOB and LiBOB are effective interfacial modifiers for SnO2/perovskite solar cells.
    • The strategy simultaneously optimizes interfacial chemistry and film quality.
    • This approach leads to highly efficient and stable perovskite solar cells.