In a significant breakthrough, researchers from Pusan National University have made strides in enhancing the stability and efficiency of perovskite solar cells, potentially paving the way for these cells to supplant traditional silicon-based counterparts in the solar energy sector. The study, published in the Journal of Energy Chemistry’s May 2024 edition, details the use of crown ether B18C6 for interfacial passivation—a method that effectively mitigates lead leakage and counters the degradation of perovskite structures in the presence of moisture.
Perovskite solar cells are hailed for their high power conversion rates and are seen as a viable successor to the silicon cells that currently dominate the photovoltaic market. However, their susceptibility to environmental factors, particularly moisture, and the risk of lead leakage have been significant hurdles in their development. The South Korean team’s research presents a solution by utilizing B18C6 to form protective host-guest complexes with lead ions, significantly increasing the durability and efficiency of these cells.
The application of B18C6 not only prevents lead from seeping out of the cells but also bolsters their stability under high humidity conditions—achieving a notable power conversion efficiency of 21.7%. This marks a considerable improvement over untreated perovskite cells, which exhibit rapid degradation and lead leakage under similar conditions.
Looking ahead, the advancements in perovskite solar cell technology could revolutionize the renewable energy landscape. With potential efficiencies surpassing 30% in tandem with silicon solar cells, perovskites stand to offer a greener, more efficient alternative to fossil fuels, aligning with global carbon neutrality goals. Beyond energy production, the technology holds promise for a range of applications, including high-efficiency hydrogen production, flexible displays, and the development of advanced semiconductor materials.
Assistant Professor Ji-Youn Seo, the lead researcher of the study, envisions a future where perovskite solar cells contribute significantly to various high-tech industries, from energy to semiconductors. The team’s work underscores the potential of crown ethers in overcoming the long-standing challenges faced by perovskite solar cells, setting the stage for their accelerated commercialization and broader application in sustainable energy solutions and beyond.
