学术报告：Plasmon-Enhanced SolarEnergy Conversion in Semiconductor-Metal Heterojunctions
报告人： Nianqiang Wu, Professor, Department of Mechanical & Aerospace Engineering, West VirginiaUniversity, Morgantown, WV26506, USA
报告地点：独墅湖校区907-1445
报告时间：2016年6月13日上午9:30-10:30
Solar energy can be converted either toelectric energy via photovoltaics or to chemical energy via photocatalysts.Emerging of surface plasmon resonance (SPR) provides a new opportunity toimprove the performance of photocatalysts and photoelectrochemical cells. Thistalk will present our effort on fundamental understanding of the underlyingmechanism of plasmon-enhanced solar energy harvesting. In particular, thespeech will discuss our newly discovered plasmon-induced resonant energy transfer(PIRET) mechanism in the metal-semiconductor heterojunctions. The PIRETmechanism along with the hot electron transfer process suggests that plasmonicnanostructures can act as photo-sensitizers. The discovery of plasmonicphoto-sensitizers has opened a new avenue to develop efficient photocatalystsand solar cells. The theoretical maximum efficiency of solar energy conversionin plasmonic metal-semiconductor heterojunctions is predicted. This talk willdemonstrate our effort on development of effective plasmonicmetal-semiconductor heterojunctions to enable strong coupling between theplasmonic metal and the semiconductor. Our results show that the performance ofsolar water splitting by a hematite nanorod array can be greatly improved by plasmon-inducedphotonic and energy transfer enhancement.
Speaker Biography:
Dr. Nianqiang (Nick) Wu is currently Professor of Materials Sciencein Department of Mechanical & Aerospace Engineering at West VirginiaUniversity (WVU), USA. He received his Ph.D. degree in Materials Science &Engineering from Zhejiang University, China in 1997. He was a PostdoctoralResearch Fellow at University of Pittsburgh from 1999 to 2001. Afterwards hedirected Keck Surface Science Center at Northwestern University in USA in 2001-2005.He then joined WVU as Assistant Professor in 2005, promoted to AssociateProfessor in 2010 and Full Professor in 2014.
He currently serves on the advisory board of “Interface”, the homejournal of the Electrochemical Society (ECS). He also serves as Vice Chair of Sensor Division in ECS. He has receivedthe Benedum Distinguished Scholar Award, and the Alice Hamilton Award forExcellence in Occupational Safety & Health: Biological Category. He has wonthe WVU Statler College Outstanding Researcher Award twice.
Dr. Wu’s current research interest lies in chemical sensors andbiosensors for health care and environment monitoring, photocatalysts andphotoelectrochemical cells for solar energy harvesting. His research is fundedby NSF, NIH and DOE. He has published 1 book entitled “Biosensors Based onNanomaterials and Nanodevices”, 3 book chapters, 145 peer-reviewed papers in journalssuch as Nature Photonics, Nature Comm.,Journal of the American Chemical Society, Analytical Chemistry and etc.. 20of his papers are ranked among the top 1% most cited in their subject fields(Thomson Reuters 2015). His papers were cited about 2200 times in a single year2015 with a total citation count of >10000 times.
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（报告联系人：徐庆锋老师）