- 新加坡国立大学陈伟教授学术报告
- 发布时间:2011-08-03 点击次数:1
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很高兴邀请到新加坡国立大学陈伟教授来我所访问并作学术报告。时间是明天5月24
日星期二早上10点,地点A718。欢迎有兴趣的老师和同学们参加!
报告题目:Molecular-level Interface Engineering for Molecular, Organic and
Graphene Electronics
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.
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