報告題目:低維鈣鈦礦半導體納米材料的合成與綠色能源應用
報告人: 鄭偉威
報告時間🟧:2023年12月27日(星期三)15:30
報告地點:線下 新環境大樓200會議室;線上 騰訊會議ID 283197435, 密碼231227
邀請人🖕: 陳悅天👨🦽,趙一新
報告摘要:
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.
報告人簡介:
鄭偉威🫄📪,美國雪城大學(Syracuse University)化學系副教授,博士生導師。2011年博士畢業於美國佛羅裏達州立大學(Florida State University),期間從事稀磁半導體量子點的光學和磁學性質研究。2012年至2015年👩🏼🔧📨,在美國埃默裏大學(Emory University)從事量子點功能化及生物體系應用的博士後研究。2015年至今任職於美國雪城大學化學系。主要研究領域為低維功能納米材料的合成與自組裝及其在能源、催化等方向的應用🦜。研究成果發表在JACS🧔🏿⏬,Nano Letters☹️,ACS Nano,Adv. Funct. Mater.等期刊👩🏻✈️,共計50余篇👸👨👨👧。曾獲得美國自然科學基金早期職業生涯獎(NSF CAREER Award),美國化學會青年科學家獎(ACS-PRF New Investigator Award),美國雪城環境和能源卓越中心研究員(Faculty Fellow of the Syracuse Center of Excellence in Environmental Energy Systems)等榮譽👨🏼🏫✧。