学术报告：Light emission from Nanowires and 2D Materials &  Photolysis water splitting

报告人：  范红金（ 新加坡Nanyang Technological University）

 

  时间：12月23日 10:00 am

  地点：发光室学术报告厅

 

范红金目前为新加坡南洋理工大学数理学院副教授。1999年获吉林大学学士学位，2003年获新加坡国立大学博士学位，其后分别在德国马普研究所和英国剑桥大学任博士后研究员。2008年8月加盟南洋理工大学。曾经做过ZnO纳米线的有序阵列合成和发光性质，柯肯达尔效应 (Kirkendall effect)运用于纳米管的合成和固相反应，三维纳米树枝状构造和应用于赝电容。目前主要从事氧化物纳米材料在光解水和电池方面的应用，和半导体纳米线光学性质方面。已发表SCI收录论文120多篇，他引5000多次，H因子39。现任Nanotechnology, Scientific Reports 编委， Materials Research Bulletin 副主编 。

 

•ABstract：In the 1st part of my talk, I will present light emissions from both 1D nanowires and 2D MoSSe alloyed monolayers. We found that metal (Au, Ag) nanoparticles by physical sputtering on ZnOnanorods with a 5-10 nm middle layer of ALD Al2O3 can drastically enhance the NBE and quench the defect emissions. Mechanism will be proposed but still open for discussion. In addition, lasing from II-IV nanowires (ZnSe) will also be presented in which two-photon absorption plays a role in lowering the pumping power. I will also present our recent data on fabrication and PL/Raman characterization of composition-variable MoSxSe1-x monolayers.  •In the 2nd part, I will introduce our research on solar water splitting. TiO2-based nanostructure photoelectrochemical electrode materials are fabricated in form of 3D inverse opals or nanowires, and then form heterostructures with chalcogenides (CdSe) nanoparticles. Finally I will also introduce briefly on behalf of all co-authors our recent breaking result on perovskite solar cell enabled photolysis water splitting.  

 

 

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