Guest Seminar - Solar Cells and LEDs Based on Metal Halide Perovskites
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Metal halide perovskites have shown great promise for a new generation of optoelectronic devices, including solar cells and light-emitting diodes (LEDs). For perovskite solar cells, we aim to enhance their stability, with a focus on developing stable charge-transport materials. We demonstrate that both the charge-transport materials and perovskites can be effectively recycled using green solvents. Our work highlights unique opportunities for holistic recycling in perovskite photovoltaics, paving the way for a sustainable perovskite solar economy. For perovskite LEDs, we demonstrate their efficient light detection capabilities, distinguishing them from LEDs based on other semiconductors. By leveraging this feature, we have recently developed multifunctional displays using highly photo-responsive perovskite LEDs as pixels.
Feng Gao has been a full professor and head of the Optoelectronics Unit at Linköping University in Sweden since 2020. He was appointed as a Wallenberg Scholar in 2024. His research group focuses on emerging semiconductors for next-generation optoelectronic devices. He obtained his Ph.D. degree in 2011 from the University of Cambridge, and his M.S. (2007) and B.S. (2004) degrees from Nanjing University. He has received prestigious national and international grants, including an ERC Consolidator Grant in 2021 and an ERC Starting Grant in 2016 from the European Research Council (ERC). He was named a Swedish Foundation for Strategic Research (SSF) Future Research Leader in 2019 and a Wallenberg Academy Fellow in 2017. He has also been honored with the Tage Erlander Prize in Natural Sciences and Technology in 2020 and the Göran Gustafsson Prize in Physics in 2025, both awarded by the Royal Swedish Academy of Sciences.