Breakthrough in Perovskite Solar Cells Boosts Efficiency and Stability

Researchers at the Australian National University have achieved a significant milestone in the development of perovskite solar cells, a type of renewable energy technology. By introducing a new strategy to eliminate defects in the material, the team was able to enhance the efficiency of the cells to 26.29%, marking the highest reported efficiency for this type of solar cell. Furthermore, the modified cells demonstrated superior stability, retaining 94% of their initial efficiency after 10,044 hours in dry air and achieving a T80 lifetime of over 500 hours under continuous illumination.

Key Takeaways:

• The research introduced a novel strategy using aluminum chloride to eliminate hydroxyl groups and potassium ions from the tin dioxide (SnO2) surface, effectively reducing deprotonation of perovskite.
• This process formed an ultra-thin aluminum oxide layer at the SnO2/perovskite interface, functioning as a passivation layer and reducing leakage current and charge carrier recombination.
• The modified cells achieved a certified efficiency of 26.29% in single-junction n-i-p PSCs, a significant increase from previous results.
• The devices retained 94% of their initial efficiency after 10,044 hours in dry air and demonstrated a T80 lifetime of over 500 hours under continuous illumination.
• The research provides critical insights into engineering the chemical and physical interface properties and enhancing the photovoltaic performance of PSCs.
• The findings have the potential to revolutionize the field of renewable energy and contribute to the development of more efficient and stable solar cells.

Statistics:

• 26.29%: the highest reported efficiency for single-junction n-i-p PSCs utilizing SnO2 electron transport material.
• 94%: the retention rate of initial efficiency after 10,044 hours in dry air.
• 500h: the T80 lifetime of the modified cells under continuous illumination.
• 10,044 hours: the duration of the stability test in dry air.

Sources:

• Multifunctional Sno2/perovskite Interface Engineering for Efficient Perovskite Solar Cells. Advanced Science, 2025.
• Australian National University, School of Engineering, Canberra, Act 2601, Australia.
• Wiley, 111 River St, Hoboken 07030-5774, NJ, USA.
• Advanced Science can be contacted at: Copyright 2025, NewsRx LLC