CANCELLED / moved end of June Interface engineering for efficient and stable perovskite photovoltaics // ChemE seminar

Perovskite solar cells have demonstrated in the last 15 years particular promise to combine high performance with low-cost manufacturing. However, long-term operational stability remains a significant concern for the commercialization of any perovskite-based technology. In this presentation I will discuss how through molecular interface engineering and the creation of thin two-dimensional perovskites at the contact interfaces, both performance and stability under a variety of accelerated stress tests can be enhanced, for perovskite solar cells in their single-junction implementation, but also when used as a top-cell in tandem with a silicon bottom cell. Such interface engineering has recently led to a certified power conversion efficiency of 33.7% for a monolithic perovskite/silicon tandem solar cell. I will conclude my talk with outlining paths to even higher performance such as through triple-junction and bifacial tandem photovoltaics.

Stefaan De Wolf is a professor at the King Abdullah University of Science and Technology (KAUST) in Saudi Arabia, where he focuses on high-efficiency silicon and perovskite solar cells, their combinations in tandem solar cells, reliability aspects, as well as photovoltaics for harsh climates. He is Clarivate Highly Cited Researcher since 2019.