Recent advancements in perovskite solar cell technology have emerged from researchers who incorporated a synthetic molecule named CPMAC, derived from buckminsterfullerene (C₆₀). This new ionic salt significantly enhances the energy conversion capabilities and longevity of solar cells, achieving a notable power conversion efficiency (PCE) of approximately 26%. The integration of CPMAC results in a 0.6% increase in energy efficiency compared to traditional C₆₀ counterparts, which are commonly used as electron transport layers (ETLs) in these solar cells. The innovative design also addresses stability issues by improving the electronic properties at the perovskite/C₆₀ interface, reducing mechanical degradation that typically compromises long-term performance.
The research, published in the journal Science, demonstrates that CPMAC not only enhances efficiency but also shows reduced degradation rates under stress tests, maintaining a PCE of about 23% even after prolonged exposure to high temperatures and humidity. This stability is crucial for large-scale applications, as even slight efficiency improvements in power generation can significantly impact electricity provision for thousands of homes. The study underscores the potential of CPMAC to revolutionize solar technology by enhancing both the performance and durability of perovskite solar cells, positioning them as a more robust solution for renewable energy deployment.