'Self-healing' Passivation Boosts Perovskite Solar Cell Performance

• Revolutionary 'self-healing' passivation method boosts perovskite solar cell stability and performance, paving the way for more reliable and efficient sustainable energy solutions.

Researchers from multiple universities have developed a 'self-healing' dynamic passivation method to improve the stability and performance of perovskite solar cells (PSCs). The strategy involves using a hindered urea/thiocarbamate bond Lewis acid-base material (HUBLA) that can dynamically heal the perovskite when exposed to moisture or heat, ensuring device performance and stability. The passivation strategy resulted in high-performance devices with a power conversion efficiency (PCE) of 25.1% and retained 94% of their initial PCE after aging for 1500 hours at 85 °C in N2.

Professor Udo Bach, a study co-author, highlighted that this work addresses critical issues related to defect passivation in perovskites, which have hindered widespread adoption of this technology. The slow-release strategy of passivating agents into the perovskite material has led to enhanced performance and extended long-term stability under real-world conditions. This breakthrough could lead to more reliable and efficient perovskite solar cells, contributing to the global transition towards sustainable energy solutions.

How does the 'self-healing' passivation method improve perovskite solar cell stability?

• The 'self-healing' passivation method involves using a hindered urea/thiocarbamate bond Lewis acid-base material (HUBLA) that can dynamically heal the perovskite when exposed to moisture or heat.
  
• This passivation strategy helps to improve the stability and performance of perovskite solar cells (PSCs) by ensuring device performance and stability even when exposed to harsh conditions.
  
• The high-performance devices achieved a power conversion efficiency (PCE) of 25.1% and retained 94% of their initial PCE after aging for 1500 hours at 85 °C in N2.
  
• The slow-release strategy of passivating agents into the perovskite material has led to enhanced performance and extended long-term stability under real-world conditions.
• This breakthrough could lead to more reliable and efficient perovskite solar cells, contributing to the global transition towards sustainable energy solutions.