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报告题目:低维钙钛矿半导体纳米材料的合成与绿色能源应用

报告人:   郑伟威

报告时间:2023年12月27日(星期三)15:30

报告地点:线下 新环境大楼200会议室;线上 腾讯会议ID 283197435, 密码231227

邀请人:   陈悦天,赵一新


报告摘要:

Metal halide perovskite nanocrystals (NCs) with excellent photoelectrical properties are one of the most interesting materials capturing the interest of researchers over the past decade, and have broad applications in optoelectronics, such as light-emitting diodes (LEDs), photodetectors, and solar cells.

In our research, we developed advanced synthetic methods for low-dimensional perovskite and metal chalcogenide NCs, including 0-dimensional (0D) nanocubes and quantum dots, 1D nanorods and nanowires, 2D nanoplatelets and nanofilms, as well as multi-dimensional core/shell heterostructure NCs. To overcome the glaring limitation of instability and toxicity of lead-based metal halide perovskites, we have developed shell coating strategies, including non-epitaxial oxide shell encapsulation and epitaxial perovskite shell growth, for metal halide perovskite NCs. The resulting core/shell perovskite NCs present excellent environmental stability and tunable charge separation efficiency with promising application for solar energy conversion such as photocatalysis in aqueous solution.


报告人简介:

    郑伟威,美国雪城大学(Syracuse University)化学系副教授,博士生导师。2011年博士毕业于美国佛罗里达州立大学(Florida State University),期间从事稀磁半导体量子点的光学和磁学性质研究。2012年至2015年,在美国埃默里大学(Emory University)从事量子点功能化及生物体系应用的博士后研究。2015年至今任职于美国雪城大学化学系。主要研究领域为低维功能纳米材料的合成与自组装及其在能源、催化等方向的应用。研究成果发表在JACS,Nano Letters,ACS Nano,Adv. Funct. Mater.等期刊,共计50余篇。曾获得美国自然科学基金早期职业生涯奖(NSF CAREER Award),美国化学会青年科学家奖(ACS-PRF New Investigator Award),美国雪城环境和能源卓越中心研究员(Faculty Fellow of the Syracuse Center of Excellence in Environmental Energy Systems)等荣誉。

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