报告题目：
Molecular-level Interface Engineering for Molecular, Organic and Graphene Electronics
报 告 人： 陈伟 教授
报告时间： 2012年5月30日（星期三） 上午10:00
报告地点： 尚贤楼411会议室
报告摘要：Self-assembled molecular nanostructures or organic thin films with well-defined orientation, conformation, and two-dimensional (2D) organization on surfaces have great potential in organic electronics, and molecular nano-devices. Their interfaces to substrates (dielectric or conducting electrodes) and of the organic heterojunctions have the crucial impact on the device performances. In particular, significant improvement on the power conversion efficiency of organic photovoltaic devices, constructed from organic p-n or organic-inorganic heterojunctions, relies on the thorough understanding as well as effective engineering of those interface properties. In this talk we will focus on our recent results of STM and synchrotron studies of the molecule-substrate interface. We use synchrotron-based photoemission spectroscopy (PES), near-edge x-ray absorption spectroscopy (NEXAFS) and low-temperature scanning tunneling microscopy (LT-STM) to investigate the molecular and organic-electronics and graphene related interface problems, including self-assembled molecular nanostructure arrays, interface dipole formation, interface energy level alignment, supramolecular packing and molecular orientation.
专家简介：
陈伟，新加坡国立大学物理系与化学系教授，研究方向为分子自组装、有机光电器件相关的界面化学及物理、石墨烯、表面科学等。在J. Am. Chem. Soc.，Nano Letters， Advanced Materials， Small， ACS Nano，Appl. Phys. Lett.， Phys. Rev. B.等国际权威期刊已发表近百篇SCI论文，总引用次数超过1400次，H-Index: 23，作过超过30次国际会议的邀请报告以及大会报告，已主持5个国际会议，主持项目经费总额上千万新币。
物理与光电工程学院
2012.05.29