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Updated: Jan 12, 2026
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
Decoupling Photoinduced Lattice Evolution via Grain Spatial Isolation for Perovskite Solar Cells
Zhengyan He1,2, Yuchen Zhou1, Tongtong Kou1
1School of Chemistry and Chemical Engineering, Ministry of Education Key Laboratory of Special Functional Aggregated Materials, Shandong Key Laboratory of Advanced Organosilicon Materials and Technologies, Shandong University, Jinan, 250100, China.
Researchers developed an in situ polymerization strategy using 2-acrylamido-2-methylpropanesulfonate (AMPS) to enhance perovskite solar cell (PSC) stability. This method improves photomechanical stability and operational longevity, paving the way for commercialization.
Area of Science:
- Materials Science
- Renewable Energy
- Photovoltaics
Background:
- Long-term operational stability is a critical challenge for perovskite solar cells (PSCs).
- Photomechanical instability, driven by light-induced lattice dynamics, significantly degrades PSC performance.
- Existing strategies often struggle to mitigate stress and ion migration effectively.
Purpose of the Study:
- To develop an in situ polymerization strategy for enhancing the photomechanical stability of perovskite films.
- To investigate the role of polymer grain boundary spacing in mitigating light-induced degradation.
- To improve the long-term operational performance and commercial viability of PSCs.
Main Methods:
- In situ polymerization of 2-acrylamido-2-methylpropanesulfonate (AMPS) during perovskite film annealing.
- Formation of a cross-linked polymer (P-AMPS) acting as grain boundary spacers.
- Systematic experimental and theoretical investigations of film quality, lattice integrity, and photomechanical stability.
Main Results:
- P-AMPS effectively provides physical spatial isolation between perovskite grains, mitigating lattice expansion and stress accumulation.
- The strategy suppressed ion migration and strain-induced defect evolution, enhancing film quality.
- Methylamine-free PSCs achieved a 25.78% power conversion efficiency and retained 83.52% efficiency after 1500 hours of continuous illumination (ISOS-L-1 protocol).
Conclusions:
- In situ polymerization of AMPS offers a novel approach to improve PSC photomechanical stability.
- Grain spatial isolation is a key factor in enhancing the durability and performance of perovskite solar cells.
- This strategy presents a promising design concept for the commercialization of highly stable PSCs.
