Breakthrough Research Enhances Longevity of Perovskite Solar Cells with Alumina Nanoparticles

Scientists Have Unlocked the Secret to Longer-Lasting Perovskite Solar Technology

Date: February 27, 2025
Source: University of Surrey

Summary: New research indicates that perovskite solar cells could last up to ten times longer, thanks to the advantages offered by alumina nanoparticles, which significantly enhance the lifespan and stability of these high-efficiency energy devices.

Recent findings from the University of Surrey suggest that perovskite solar cells could have a lifespan ten times greater than previously thought. The research indicates that incorporating alumina (Al₂O₃) nanoparticles can significantly boost both the durability and stability of these cost-effective and lightweight solar technology alternatives.

Traditionally, the commercial viability of perovskite solar cells has been hampered by structural issues, primarily due to iodine leakage. This leakage can lead to degradation over time, adversely affecting both performance and longevity. In collaboration with the National Physical Laboratory and the University of Sheffield, researchers have found a method to effectively trap iodine by embedding tiny Al₂O₃ particles within the solar cells. This advancement holds promise for creating longer-lasting and more affordable next-generation solar panels.

Dr. Hashini Perera, the lead author of the study and a postgraduate research student at the Advanced Technology Institute at the University of Surrey, expressed excitement about the impact of their research. “A decade ago, the notion that perovskite solar cells could last this long in real-world conditions seemed unattainable. With these advancements, we are paving the way for breakthroughs in stability and performance, making perovskite technology a more viable energy solution.”

The findings, published in EES Solar, involved testing the modified solar cells under extreme heat and humidity to simulate real-world conditions. The results indicated that solar cells with embedded Al₂O₃ nanoparticles sustained high performance for over two months (1,530 hours)—a remarkable tenfold increase compared to just 160 hours for cells without the alumina enhancements. Further analysis showed that the Al₂O₃ nanoparticles contributed to a more uniform perovskite structure, reducing defects and enhancing electrical conductivity. Additionally, they formed a protective 2D perovskite layer, providing an extra barrier against moisture-related degradation.

Dr. Imalka Jayawardena from Surrey’s Advanced Technology Institute emphasized the significance of their findings, stating, “By addressing common challenges faced with perovskite solar technology, our research opens the door to cheaper, more efficient, and more accessible solar power. What we’ve accomplished is a crucial step toward developing high-performance solar cells that can endure real-world conditions, thereby bringing us closer to their global commercial use.”

Professor Ravi Silva, Director of the Advanced Technology Institute and interim Director at the Surrey Institute for Sustainability, added, “With the deadline for Net-Zero targets rapidly approaching, broadening access to renewable energy solutions is more critical than ever in reducing our reliance on fossil fuels. Breakthroughs like this will play a vital role in meeting global energy demands while supporting our transition to a sustainable future.”

Recent analysis by the Confederation of British Industry further highlights that training in the renewable energy sector not only enhances career prospects but can also lead to wages above the national average, underscoring the economic and environmental benefits of investing in clean energy.