報(bào)告題目：低維鈣鈦礦半導(dǎo)體納米材料的合成與綠色能源應(yīng)用

報(bào)告人：   鄭偉威

報(bào)告時(shí)間：2023年12月27日（星期三）15:30

報(bào)告地點(diǎn)：線下 新環(huán)境大樓200會(huì)議室；線上 騰訊會(huì)議ID 283197435, 密碼231227

邀請(qǐng)人：   陳悅天，趙一新

報(bào)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(bào)告人簡(jiǎn)介：

    鄭偉威，美國(guó)雪城大學(xué)（Syracuse University）化學(xué)系副教授，博士生導(dǎo)師。2011年博士畢業(yè)于美國(guó)佛羅里達(dá)州立大學(xué)（Florida State University），期間從事稀磁半導(dǎo)體量子點(diǎn)的光學(xué)和磁學(xué)性質(zhì)研究。2012年至2015年，在美國(guó)埃默里大學(xué)（Emory University）從事量子點(diǎn)功能化及生物體系應(yīng)用的博士后研究。2015年至今任職于美國(guó)雪城大學(xué)化學(xué)系。主要研究領(lǐng)域?yàn)榈途S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(yīng)用。研究成果發(fā)表在JACS，Nano Letters，ACS Nano，Adv. Funct. Mater.等期刊，共計(jì)50余篇。曾獲得美國(guó)自然科學(xué)基金早期職業(yè)生涯獎(jiǎng)（NSF CAREER Award），美國(guó)化學(xué)會(huì)青年科學(xué)家獎(jiǎng)（ACS-PRF New Investigator Award），美國(guó)雪城環(huán)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(yù)。