IIT Delhi Researchers Discover Method to Enhance Perovskite Solar Cells
New Delhi: Researchers at IIT Delhi have made significant strides in the development of perovskite solar cells, presenting a potential solution to fabricate these innovative thin-film cells under ambient conditions without the use of anti-solvents. This breakthrough could pave the way for a cost-effective alternative to conventional silicon solar cells, which currently dominate the industry.
Led by Prof. Trilok Singh from the Department of Energy Science and Engineering (DESE), the team focused on addressing the challenges of defect states that hinder the performance of perovskite technology. Their findings, published in the SMALL Journal (Wiley), detail the successful fabrication of perovskite solar cells with improved efficiency and stability.
By employing Guanidine sulfate salt (Gua-S) to minimize lattice mismatch at the electron transport layer/perovskite interface, the researchers were able to reduce interfacial stresses and enhance device reproducibility. Gua-S effectively addresses cationic and anionic defects due to its unique molecular properties.
“The device demonstrated exceptional stability, retaining 87% of its initial power conversion efficiency after 2000 hours of operation,” said Prof. Singh. “This highlights the potential of Gua-S for enhancing both performance and long-term stability of perovskite solar cells. Our anti-solvent-free approach will facilitate the scaling of these cells under ambient conditions.”
This innovative research marks a promising advancement in solar technology, opening new avenues for sustainable energy solutions.
