Related Experiment Video
Updated: May 8, 2025
11:38
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
18.3K
High-Efficiency Large-Area Perovskite Solar Cells via a Multifunctional Crystallization Regulating Passivation
Junjie Zhou1, Jiaying Lv2, Liguo Tan1
1State Key Laboratory of Power System Operation and Control, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, China.
Advanced Materials (Deerfield Beach, Fla.)
|April 11, 2025
Summary
A novel chlorine-substituted aromatic polycyclic derivative (BNCl) enhances perovskite solar cell (PSC) performance by improving film morphology and reducing defects. This leads to higher efficiency and stability in PSCs and minimodules.
Area of Science:
- Materials Science
- Renewable Energy
Background:
- Film morphology and defect density critically impact perovskite solar cell (PSC) efficiency and stability.
- Controlling perovskite crystallization and passivating defects are key challenges in PSC development.
Purpose of the Study:
- To investigate the use of a chlorine-substituted aromatic polycyclic derivative (BNCl) for regulating perovskite crystallization and passivating defects.
- To enhance charge transfer and improve the overall performance and stability of PSCs.
Main Methods:
- Synthesis and characterization of the BNCl molecule.
- Incorporation of BNCl into perovskite films to control crystallization and passivate surfaces/interfaces.
- Fabrication and testing of PSCs and minimodules with BNCl treatment.
- Long-term stability testing under operational conditions (MPP tracking).
Main Results:
- BNCl effectively regulates perovskite crystallization and passivates grain boundaries and surfaces.
- BNCl facilitates hole transport at the HTL/perovskite interface, improving charge transfer.
- Certified power conversion efficiencies (PCEs) of 25.04% (1 cm²) and 22.81% (12 cm²) were achieved.
- Devices maintained 80% of initial efficiency after 2500 hours of stability testing.
Conclusions:
- BNCl is a promising additive for enhancing PSC efficiency and stability.
- The study demonstrates a viable strategy for improving perovskite film quality and device performance.
