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Related Experiment Video

Updated: Sep 15, 2025

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

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Homogeneously-Dimensionalizing Perovskite Surface by Dual-Mechano-Chemical Regulation for Efficient Solar Cells.

Shengwei Geng1,2, Jialong Duan1, Chenlong Zhang1

  • 1College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 14, 2025
PubMed
Summary

We developed a dual-mechano-chemical surface treatment to improve perovskite solar cells. This strategy enhances efficiency and stability by creating a uniform 2D/3D interface, boosting performance and longevity.

Keywords:
charge transferdimensionality heterointerfaceperovskite solar cellsstabilitysurface polishing

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Last Updated: Sep 15, 2025

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Surface Engineering

Background:

  • Perovskite solar cells (PSCs) require precise surface control for efficiency and stability.
  • Surface heterogeneity, including impurities and wrinkles, hinders homogeneous heterointerface formation and healing.
  • Existing methods struggle to address these surface defects effectively.

Purpose of the Study:

  • To develop a novel dual-mechano-chemical strategy for homogenizing perovskite surface morphology and composition.
  • To engineer a stable and efficient 2D/3D heterointerface for enhanced charge transfer and device longevity.
  • To improve the overall performance and stability of perovskite solar cells.

Main Methods:

  • A dual-mechano-chemical approach involving energetic nanoparticle polishing and in situ dimensionalization.
  • Surface treatment to remove nano-impurities and create a defect-free lattice.
  • Fabrication of carbon-based CsPbI2Br solar cells using the engineered surface.

Main Results:

  • Homogenized perovskite surface with a well-defined 2D/3D heterointerface.
  • Accelerated charge transfer and minimized non-radiative recombination losses.
  • Achieved 15.29% power conversion efficiency in all-air-processed solar cells.
  • Demonstrated enhanced stability under prolonged dark storage (1000 h), high temperature (500 h), and operation (200 h).

Conclusions:

  • The proposed surface engineering strategy effectively addresses perovskite surface heterogeneity.
  • The 2D/3D heterointerface significantly improves charge dynamics and device stability.
  • This approach offers a pathway for scalable fabrication of high-performance and durable perovskite solar cells.