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Related Experiment Video

Updated: Jan 26, 2026

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
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Synergistic Buried and Bulk Engineering by Pre-Crystallized 2D Seeds Enables High Performance Inverted Perovskite

Luan Li1, Wending Hao1, Tao Liu1

  • 1School of Marine Sciences (State Key Laboratory of Marine Resources Utilization in South China Sea), Hainan University, Haikou, P. R. China.

Small Methods
|January 25, 2026
PubMed
Summary
This summary is machine-generated.

Incorporating 2D perovskite seeds into 3D perovskites improves buried interfaces and crystal growth for high-performance solar cells. This strategy enhances efficiency and operational stability in perovskite solar cells (PSCs).

Keywords:
buried interfaceinverted perovskite solar cellsoriented growthpre‐crystallized 2D seedsupward crystallization

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Area of Science:

  • Materials Science
  • Energy Science
  • Solid-State Physics

Background:

  • Controlling crystal growth is key for high-performance perovskite photovoltaics.
  • Surface defects are well-studied, but buried interfaces and crystal orientation in 3D perovskites are critical for inverted perovskite solar cells (PSCs).

Purpose of the Study:

  • To develop a synergistic strategy for enhancing buried interface contact and directing bulk crystallization in 3D perovskites.
  • To improve the performance and stability of inverted perovskite solar cells (PSCs).

Main Methods:

  • Incorporation of DFBP2PbI4 (2D) perovskite crystal seeds into 3D perovskite films.
  • Utilizing molecularly tailored 2D seeds to promote epitaxial growth and form hydrogen bonds with self-assembled monolayers (SAMs).

Main Results:

  • The 2D seeds facilitated bottom-up epitaxial growth with a preferred crystallization direction.
  • Hydrogen bonding between 2D seeds and SAMs accelerated interfacial carrier transfer.
  • Optimized inverted PSCs achieved a champion power conversion efficiency of 25.40% and retained 91.7% efficiency after 800 hours of operation.

Conclusions:

  • Co-optimizing buried interfaces and bulk crystallographic order is crucial for advancing PSC performance.
  • The use of 2D perovskite seeds offers a promising route to high-performance and stable perovskite solar cells.