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  • 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
  • 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524

    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.