传统的半导体微纳加工技术很难突破分子尺寸的挑战,现今普遍认为,以分子作为制备电.子器件的最小单元(分子电子学)会是下一代纳米电子学的重要研究方向。其中分子自组.装的石墨烯纳米带具有很高的载流子迁移率,并且具有可以调控的能带带隙,是非常有发.展前景的能够组建高性能分子器件的构建单元。在本项目中,我们将结合激光和低温扫.描探针显微镜,研究激光激发下的石墨烯纳米带异质结在绝缘衬底上的电子结构性质和.具有原子分辨率的载流子输运性质,这项研究对今后应用其制备纳米电子器件有重要意义

Nowadays silicon electronic device based on the traditional semiconductor.technology is already approaching to its limits. It is predicted that .nanoelectronics based on nanoscale materials like molecules will .promisingly go beyond CMOS technology in the future. Graphene .nanoribbon (GNR) is a promising building block for making high .performance molecular devices because of its high carrier mobility .and tunable band gap. We propose to combine the laser with low.temperature scanning probe microscopy to investigate the electronic .properties of self-assembled graphene nanoribbon heterojunction on .the insulating layer with laser excitation, as well as the carrier transport .properties with atomic resolution. This study will be an important step .and pave the way for realizing functional nanoelectronic devices.