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Related Experiment Video

Updated: Nov 23, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Buried Interfaces in Halide Perovskite Photovoltaics.

Xiaoyu Yang1, Deying Luo1,2, Yuren Xiang3

  • 1State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Frontiers Science Center for Nano-optoelectronics, and Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871, China.

Advanced Materials (Deerfield Beach, Fla.)
|January 4, 2021
PubMed
Summary

Researchers deciphered buried interfaces in perovskite photovoltaics using advanced spectroscopy and a lift-off strategy. They identified interface imperfections as key to performance loss, offering new passivation methods for enhanced device efficiency and stability.

Keywords:
buried interfacesimperfectionsmicrostructural reconstructionperovskite photovoltaics

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Area of Science:

  • Materials Science
  • Energy Science
  • Physical Chemistry

Background:

  • Understanding buried interfaces in perovskite photovoltaics is crucial for improving device efficiency and stability.
  • Accessing these buried interfaces is challenging due to their non-exposed nature.

Purpose of the Study:

  • To decipher the properties of buried interfaces in complete perovskite photovoltaic device stacks.
  • To identify the fundamental losses occurring at these interfaces and their impact on device performance.

Main Methods:

  • Combination of advanced in situ spectroscopy techniques.
  • A facile lift-off strategy to access buried interfaces.
  • Establishing microstructure-property relations.

Main Results:

  • Systematic presentation of losses at contact interfaces.
  • Identification of sub-microscale imperfections and lead-halide inhomogeneities as major roadblocks.
  • Demonstration that losses are mitigated by passivation-molecule-assisted microstructural reconstruction.

Conclusions:

  • Buried interface losses significantly hinder perovskite photovoltaic performance.
  • Microstructural reconstruction using passivation molecules can substantially improve device efficiency.
  • The study opens new avenues for designing passivation strategies to enhance perovskite solar cells.