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Updated: Dec 20, 2025
Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
Published on: February 27, 2017
Composite Encapsulation Enabled Superior Comprehensive Stability of Perovskite Solar Cells
Yifan Lv1, Hui Zhang1, Ruqing Liu1
1Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, P. R. China.
This study developed a composite encapsulation to improve perovskite solar cell stability. The novel multilayered approach effectively prevents degradation from moisture and environmental factors, enabling robust performance.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Organometal hybrid perovskite solar cells offer high efficiency and low-cost manufacturing.
- Poor outdoor operational stability, primarily due to moisture and organic volatilization, hinders commercialization.
- Existing encapsulation methods are insufficient to protect perovskite solar cells from environmental degradation.
Purpose of the Study:
- To develop and evaluate a composite encapsulation strategy for enhancing the operational stability of perovskite solar cells.
- To investigate the protective mechanisms of a multilayered encapsulation against moisture and vapor permeation.
- To assess the long-term performance and durability of encapsulated perovskite solar cells under various simulated operational conditions.
Main Methods:
- Sequential deposition of a compact Al2O3 layer and a hydrophobic 1H,1H,2H,2H-perfluorodecyltrichlorosilane layer on completed perovskite solar cell devices.
- Systematic investigation of encapsulated device stability under simulated operational conditions, including ambient air, continuous light, high temperature, high humidity (85/85), and water immersion.
- Analysis of perovskite material degradation and recovery mechanisms within the encapsulated environment.
Main Results:
- The composite encapsulation effectively prevented vapor permeability, significantly enhancing device stability.
- MAPbI3 perovskite decomposition was found to be reversible in the encapsulated environment, leading to reversible performance changes.
- Encapsulated devices showed no obvious performance decline under harsh conditions, including 85/85 and water immersion, demonstrating superior sealing and thermal stability.
Conclusions:
- A scalable and robust multilayered encapsulation strategy using Al2O3 and fluorosilane layers significantly improves perovskite solar cell stability.
- The encapsulation protects against moisture and volatilization, crucial factors in perovskite degradation.
- This approach offers a viable pathway for the reproducible manufacturing of durable hybrid perovskite optoelectronics.
