周惠久论坛|Understanding and Tailoring Microstructures of Halide Perovskite Thin Films for Efficient, Stable Solar Cells
邀请讲座人：Dr. Yuanyuan Zhou
简介：Yuanyuan Zhou is an Assistant Professor (Research) at Brown University. He earned B.S. and M.S. in Materials Science & Engineering from Xi’an Jiaotong University, and received Ph.D. in Engineering from Brown University in 2016 (with Outstanding Thesis Award). He has published 75 journal papers and co-filed 5 U.S. patents (Google Scholar: >3,500 citations; h-index: 32). Among these, ~30 papers (as the first/co-first/corresponding authors) have been published on high-impact journals (IF>10) such as Nat. Commun., JACS, Adv. Mater., Environ. Energy Sci., etc. He has been invited reviewers for US federal funding programs in NSF, DoE, etc. and for ~50 journals such as Nature Energy. He has also been guest editors for J. Appl. Phys. and Solar RRL, and organizers for the perovskite-semiconductor-focused symposia at MRS meetings for 3 times.
Dr. Zhou’s research interests focus on developing high-performance, low-cost semiconductors for energy/electronic devices, and recently, he has performed active research on perovskite semiconductors under the funding support of NSF and DoD.
主题：Understanding and Tailoring Microstructures of Halide Perovskite Thin Films for Efficient, Stable Solar Cells
时间: 2019年11月07日 10:00 – 11:00 am
地点: 仲英楼 材料学院 第一会议室
摘要：Halide perovskites (HPs) are a new family of inorganic-based semiconductors that have been revolutionizing the field of functional electronics. In particular, perovskite-based solar cell (PSC) has rapidly emerged as a disruptive photovoltaic technology, attracting significant interests from both academia and industry. Such rapid PSC development has been led by the advances in the understanding and engineering of HP microstructures. In my talk, first, I will look at the fundamental phenomena pertaining to nucleation and grain growth involved in the HP microstructural evolution. Established principles that govern these phenomena will be invoked in the context of specific thin-film examples. Based on such understandings, a novel soft chemical process will be demonstrated for upscaling of PSC fabrication. Then, I will discuss the importance of grain boundaries on the physical/chemical properties of HPs, and show several rational strategies for tailoring grain-boundary microstructures. Finally, I will present perspectives on the future HP research.