Perovskite solar cells (PSCs) can experience both positive and negative effects during ambient storage. Here are some key insights regarding their long-term stability benefits and challenges:
Positive Effects
- Initial Efficiency Improvement: Ambient storage can initially improve the power conversion efficiency (PCE) of perovskite solar cells. This is because some components or structures within the cells can mature or improve over time in ambient conditions, enhancing their performance.
- Improved Stability with Optimizations: By optimizing device architecture, such as using a controlled mesoporous TiO2 layer or incorporating additives like PbS QDs, PSCs can achieve significant long-term stability. For example, studies have shown that devices maintain over 80% of their initial PCE after prolonged storage in ambient air.
Challenges and Limitations
- Sensitivity to Environment: Perovskite materials are inherently sensitive to moisture, oxygen, light, and temperature. These environmental factors can lead to degradation, reducing the device’s stability over time.
- Degradation Over Long Timeframes: While some perovskite cells show good initial stability, prolonged exposure to ambient conditions can still result in significant performance degradation over time.
Conclusion
While there are potential benefits to ambient storage for perovskite solar cells, such as initial efficiency improvements and potential stability enhancements with specific optimizations, the overall stability remains a challenge due to environmental sensitivities. Achieving long-term stability requires careful device design and the use of stabilizing strategies.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/are-there-any-long-term-stability-benefits-from-ambient-storage-for-perovskite-solar-cells/
